./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 03:26:34,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:26:34,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:26:35,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:26:35,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:26:35,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:26:35,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:26:35,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:26:35,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:26:35,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:26:35,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:26:35,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:26:35,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:26:35,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:26:35,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:26:35,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:26:35,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:26:35,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:26:35,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:26:35,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:26:35,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:26:35,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:26:35,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:26:35,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:26:35,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:26:35,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:26:35,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:26:35,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:26:35,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:26:35,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:26:35,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:26:35,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:26:35,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:26:35,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:26:35,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:26:35,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:26:35,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:26:35,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:26:35,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:26:35,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:26:35,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:26:35,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:26:35,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:26:35,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:26:35,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:26:35,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:26:35,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:26:35,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:26:35,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:26:35,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:26:35,085 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:26:35,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:26:35,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:26:35,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:26:35,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:26:35,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:26:35,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:26:35,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:26:35,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:26:35,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:26:35,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:26:35,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:26:35,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:26:35,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:26:35,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:26:35,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:26:35,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:26:35,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2021-12-18 03:26:35,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:26:35,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:26:35,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:26:35,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:26:35,308 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:26:35,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-18 03:26:35,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd45a3de/c7d98a42fdf547778da548b4f2dd6e31/FLAG21cf3a9d3 [2021-12-18 03:26:35,978 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:26:35,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-18 03:26:36,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd45a3de/c7d98a42fdf547778da548b4f2dd6e31/FLAG21cf3a9d3 [2021-12-18 03:26:36,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd45a3de/c7d98a42fdf547778da548b4f2dd6e31 [2021-12-18 03:26:36,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:26:36,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:26:36,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:26:36,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:26:36,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:26:36,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:26:36" (1/1) ... [2021-12-18 03:26:36,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a91ff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:36, skipping insertion in model container [2021-12-18 03:26:36,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:26:36" (1/1) ... [2021-12-18 03:26:36,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:26:36,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:26:37,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-18 03:26:37,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:26:37,547 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:26:37,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-18 03:26:37,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:26:37,859 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:26:37,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37 WrapperNode [2021-12-18 03:26:37,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:26:37,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:26:37,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:26:37,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:26:37,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:37,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,012 INFO L137 Inliner]: procedures = 216, calls = 1408, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 3072 [2021-12-18 03:26:38,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:26:38,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:26:38,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:26:38,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:26:38,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:26:38,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:26:38,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:26:38,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:26:38,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (1/1) ... [2021-12-18 03:26:38,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:26:38,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:26:38,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 03:26:38,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 03:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-18 03:26:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-18 03:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-18 03:26:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-18 03:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-18 03:26:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-18 03:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 03:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 03:26:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-18 03:26:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-18 03:26:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-18 03:26:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-18 03:26:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:26:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:26:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-18 03:26:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-18 03:26:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-18 03:26:38,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-18 03:26:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 03:26:38,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 03:26:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:26:38,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:26:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-18 03:26:38,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-18 03:26:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-18 03:26:38,221 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-18 03:26:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 03:26:38,221 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 03:26:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:26:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-18 03:26:38,222 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-18 03:26:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 03:26:38,222 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 03:26:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:26:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 03:26:38,222 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 03:26:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-18 03:26:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-18 03:26:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:26:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:26:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 03:26:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 03:26:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-18 03:26:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-18 03:26:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 03:26:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 03:26:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 03:26:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 03:26:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 03:26:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 03:26:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 03:26:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 03:26:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-18 03:26:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-18 03:26:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-18 03:26:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-18 03:26:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-18 03:26:38,226 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-18 03:26:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-18 03:26:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-18 03:26:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-18 03:26:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-18 03:26:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-18 03:26:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-18 03:26:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-18 03:26:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-18 03:26:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 03:26:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 03:26:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 03:26:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 03:26:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 03:26:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 03:26:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-18 03:26:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-18 03:26:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-18 03:26:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-18 03:26:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:26:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 03:26:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 03:26:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 03:26:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 03:26:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 03:26:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 03:26:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 03:26:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 03:26:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-18 03:26:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-18 03:26:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-18 03:26:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-18 03:26:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:26:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-18 03:26:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-18 03:26:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-18 03:26:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-18 03:26:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 03:26:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 03:26:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-18 03:26:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-18 03:26:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-18 03:26:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-18 03:26:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:26:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:26:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:26:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-18 03:26:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-18 03:26:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:26:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:26:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-18 03:26:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-18 03:26:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-18 03:26:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-18 03:26:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 03:26:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 03:26:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:26:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:26:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:26:38,737 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:26:38,739 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:26:42,766 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:26:42,782 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:26:42,782 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 03:26:42,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:26:42 BoogieIcfgContainer [2021-12-18 03:26:42,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:26:42,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:26:42,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:26:42,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:26:42,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:26:36" (1/3) ... [2021-12-18 03:26:42,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dbc9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:26:42, skipping insertion in model container [2021-12-18 03:26:42,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:26:37" (2/3) ... [2021-12-18 03:26:42,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dbc9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:26:42, skipping insertion in model container [2021-12-18 03:26:42,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:26:42" (3/3) ... [2021-12-18 03:26:42,796 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-18 03:26:42,799 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:26:42,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:26:42,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:26:42,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 03:26:42,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:26:42,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-12-18 03:26:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 03:26:42,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:42,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:26:42,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:42,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858725, now seen corresponding path program 1 times [2021-12-18 03:26:42,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:42,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004128624] [2021-12-18 03:26:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:42,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:26:43,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:43,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004128624] [2021-12-18 03:26:43,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004128624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:43,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:43,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:26:43,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855177011] [2021-12-18 03:26:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:43,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:26:43,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:43,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:26:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:43,195 INFO L87 Difference]: Start difference. First operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:26:43,402 INFO L93 Difference]: Finished difference Result 2823 states and 4045 transitions. [2021-12-18 03:26:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:26:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-18 03:26:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:26:43,437 INFO L225 Difference]: With dead ends: 2823 [2021-12-18 03:26:43,438 INFO L226 Difference]: Without dead ends: 1868 [2021-12-18 03:26:43,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:43,450 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 1313 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:26:43,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2878 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:26:43,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-12-18 03:26:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1863. [2021-12-18 03:26:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1368 states have (on average 1.3216374269005848) internal successors, (1808), 1399 states have internal predecessors, (1808), 397 states have call successors, (397), 99 states have call predecessors, (397), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-18 03:26:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2603 transitions. [2021-12-18 03:26:43,647 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2603 transitions. Word has length 9 [2021-12-18 03:26:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:26:43,648 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 2603 transitions. [2021-12-18 03:26:43,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2603 transitions. [2021-12-18 03:26:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 03:26:43,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:43,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:26:43,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:26:43,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1403360505, now seen corresponding path program 1 times [2021-12-18 03:26:43,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:43,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658049991] [2021-12-18 03:26:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:43,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:26:43,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658049991] [2021-12-18 03:26:43,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658049991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:43,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:43,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:26:43,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104203459] [2021-12-18 03:26:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:43,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:26:43,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:26:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:43,736 INFO L87 Difference]: Start difference. First operand 1863 states and 2603 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:26:43,799 INFO L93 Difference]: Finished difference Result 1865 states and 2604 transitions. [2021-12-18 03:26:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:26:43,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-18 03:26:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:26:43,808 INFO L225 Difference]: With dead ends: 1865 [2021-12-18 03:26:43,809 INFO L226 Difference]: Without dead ends: 1862 [2021-12-18 03:26:43,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:43,813 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 1305 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:26:43,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1311 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:26:43,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-12-18 03:26:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2021-12-18 03:26:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1368 states have (on average 1.320906432748538) internal successors, (1807), 1398 states have internal predecessors, (1807), 396 states have call successors, (396), 99 states have call predecessors, (396), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-18 03:26:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2601 transitions. [2021-12-18 03:26:43,878 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2601 transitions. Word has length 10 [2021-12-18 03:26:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:26:43,880 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 2601 transitions. [2021-12-18 03:26:43,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2601 transitions. [2021-12-18 03:26:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 03:26:43,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:43,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:26:43,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 03:26:43,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -554903960, now seen corresponding path program 1 times [2021-12-18 03:26:43,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:43,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494680495] [2021-12-18 03:26:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:43,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:26:43,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494680495] [2021-12-18 03:26:43,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494680495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:43,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:43,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:26:43,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908164648] [2021-12-18 03:26:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:43,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:26:43,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:26:43,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:43,947 INFO L87 Difference]: Start difference. First operand 1862 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:26:44,013 INFO L93 Difference]: Finished difference Result 1864 states and 2602 transitions. [2021-12-18 03:26:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:26:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-18 03:26:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:26:44,021 INFO L225 Difference]: With dead ends: 1864 [2021-12-18 03:26:44,021 INFO L226 Difference]: Without dead ends: 1861 [2021-12-18 03:26:44,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:44,024 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:26:44,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 1309 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:26:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-12-18 03:26:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2021-12-18 03:26:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1368 states have (on average 1.3201754385964912) internal successors, (1806), 1397 states have internal predecessors, (1806), 395 states have call successors, (395), 99 states have call predecessors, (395), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-18 03:26:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2599 transitions. [2021-12-18 03:26:44,082 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2599 transitions. Word has length 11 [2021-12-18 03:26:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:26:44,083 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2599 transitions. [2021-12-18 03:26:44,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:44,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2599 transitions. [2021-12-18 03:26:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 03:26:44,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:44,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:26:44,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 03:26:44,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -22549974, now seen corresponding path program 1 times [2021-12-18 03:26:44,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:44,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717621119] [2021-12-18 03:26:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:44,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:26:44,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:44,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717621119] [2021-12-18 03:26:44,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717621119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:44,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:44,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:26:44,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062029255] [2021-12-18 03:26:44,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:44,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:26:44,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:44,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:26:44,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:44,138 INFO L87 Difference]: Start difference. First operand 1861 states and 2599 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:26:44,262 INFO L93 Difference]: Finished difference Result 5538 states and 7845 transitions. [2021-12-18 03:26:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:26:44,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-18 03:26:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:26:44,278 INFO L225 Difference]: With dead ends: 5538 [2021-12-18 03:26:44,278 INFO L226 Difference]: Without dead ends: 3675 [2021-12-18 03:26:44,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:26:44,288 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 1307 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:26:44,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 2898 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:26:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2021-12-18 03:26:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3655. [2021-12-18 03:26:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2697 states have (on average 1.32146829810901) internal successors, (3564), 2751 states have internal predecessors, (3564), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-18 03:26:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5160 transitions. [2021-12-18 03:26:44,449 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5160 transitions. Word has length 12 [2021-12-18 03:26:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:26:44,449 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 5160 transitions. [2021-12-18 03:26:44,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:26:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5160 transitions. [2021-12-18 03:26:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 03:26:44,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:44,456 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-12-18 03:26:44,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 03:26:44,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1548184114, now seen corresponding path program 1 times [2021-12-18 03:26:44,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:44,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111219161] [2021-12-18 03:26:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:44,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:26:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:26:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:26:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:26:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:26:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:26:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:26:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:26:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:26:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 03:26:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 03:26:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 03:26:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 03:26:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 03:26:44,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:44,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111219161] [2021-12-18 03:26:44,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111219161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:44,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:44,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:26:44,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661449441] [2021-12-18 03:26:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:44,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:26:44,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:26:44,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:26:44,724 INFO L87 Difference]: Start difference. First operand 3655 states and 5160 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:26:46,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:26:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:26:48,125 INFO L93 Difference]: Finished difference Result 7439 states and 10705 transitions. [2021-12-18 03:26:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:26:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-18 03:26:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:26:48,144 INFO L225 Difference]: With dead ends: 7439 [2021-12-18 03:26:48,144 INFO L226 Difference]: Without dead ends: 3787 [2021-12-18 03:26:48,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:26:48,162 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 1356 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 374 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:26:48,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 1744 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 324 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-12-18 03:26:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-12-18 03:26:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3635. [2021-12-18 03:26:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2677 states have (on average 1.2581247665296975) internal successors, (3368), 2731 states have internal predecessors, (3368), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-18 03:26:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4964 transitions. [2021-12-18 03:26:48,289 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4964 transitions. Word has length 134 [2021-12-18 03:26:48,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:26:48,289 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 4964 transitions. [2021-12-18 03:26:48,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:26:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4964 transitions. [2021-12-18 03:26:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 03:26:48,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:48,293 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-18 03:26:48,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 03:26:48,294 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash 761767741, now seen corresponding path program 1 times [2021-12-18 03:26:48,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:48,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413155204] [2021-12-18 03:26:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:48,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 03:26:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:26:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:26:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 03:26:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:26:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:26:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:26:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:26:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 03:26:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 03:26:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 03:26:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 03:26:48,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413155204] [2021-12-18 03:26:48,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413155204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:48,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:48,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:26:48,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255133703] [2021-12-18 03:26:48,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:48,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:26:48,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:48,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:26:48,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:26:48,627 INFO L87 Difference]: Start difference. First operand 3635 states and 4964 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 03:26:51,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:26:53,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:26:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:26:56,290 INFO L93 Difference]: Finished difference Result 7642 states and 10693 transitions. [2021-12-18 03:26:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:26:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-18 03:26:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:26:56,308 INFO L225 Difference]: With dead ends: 7642 [2021-12-18 03:26:56,308 INFO L226 Difference]: Without dead ends: 4010 [2021-12-18 03:26:56,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:26:56,324 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 898 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 509 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:26:56,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 3759 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1271 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-12-18 03:26:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-12-18 03:26:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3675. [2021-12-18 03:26:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2717 states have (on average 1.2598454177401546) internal successors, (3423), 2771 states have internal predecessors, (3423), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-18 03:26:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5019 transitions. [2021-12-18 03:26:56,490 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5019 transitions. Word has length 134 [2021-12-18 03:26:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:26:56,491 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 5019 transitions. [2021-12-18 03:26:56,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 03:26:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5019 transitions. [2021-12-18 03:26:56,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 03:26:56,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:26:56,498 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-12-18 03:26:56,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 03:26:56,498 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:26:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:26:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1103091386, now seen corresponding path program 1 times [2021-12-18 03:26:56,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:26:56,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884400983] [2021-12-18 03:26:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:26:56,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:26:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:26:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:26:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:26:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:26:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:26:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:26:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:26:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:26:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:26:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 03:26:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 03:26:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:26:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 03:26:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 03:26:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:26:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 03:26:56,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:26:56,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884400983] [2021-12-18 03:26:56,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884400983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:26:56,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:26:56,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:26:56,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446597308] [2021-12-18 03:26:56,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:26:56,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:26:56,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:26:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:26:56,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:26:56,817 INFO L87 Difference]: Start difference. First operand 3675 states and 5019 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 03:26:58,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:00,016 INFO L93 Difference]: Finished difference Result 7319 states and 10011 transitions. [2021-12-18 03:27:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:27:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-18 03:27:00,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:00,034 INFO L225 Difference]: With dead ends: 7319 [2021-12-18 03:27:00,034 INFO L226 Difference]: Without dead ends: 3647 [2021-12-18 03:27:00,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:27:00,048 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 1278 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 329 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:00,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 1689 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 03:27:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-12-18 03:27:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3495. [2021-12-18 03:27:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2569 states have (on average 1.253016738030362) internal successors, (3219), 2623 states have internal predecessors, (3219), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (794), 697 states have call predecessors, (794), 722 states have call successors, (794) [2021-12-18 03:27:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4747 transitions. [2021-12-18 03:27:00,190 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4747 transitions. Word has length 134 [2021-12-18 03:27:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:00,190 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4747 transitions. [2021-12-18 03:27:00,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 03:27:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4747 transitions. [2021-12-18 03:27:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 03:27:00,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:00,193 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:00,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 03:27:00,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1886976464, now seen corresponding path program 1 times [2021-12-18 03:27:00,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:00,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677081533] [2021-12-18 03:27:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:00,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 03:27:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:27:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:27:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 03:27:00,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:00,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677081533] [2021-12-18 03:27:00,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677081533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:00,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:27:00,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:27:00,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471812531] [2021-12-18 03:27:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:00,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:27:00,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:27:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:27:00,523 INFO L87 Difference]: Start difference. First operand 3495 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:27:02,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:06,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:06,877 INFO L93 Difference]: Finished difference Result 7151 states and 9762 transitions. [2021-12-18 03:27:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:27:06,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-18 03:27:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:06,892 INFO L225 Difference]: With dead ends: 7151 [2021-12-18 03:27:06,893 INFO L226 Difference]: Without dead ends: 3659 [2021-12-18 03:27:06,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:27:06,905 INFO L933 BasicCegarLoop]: 2194 mSDtfsCounter, 1327 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 352 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:06,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1488 Valid, 4178 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 708 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-12-18 03:27:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-12-18 03:27:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3493. [2021-12-18 03:27:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2567 states have (on average 1.2516556291390728) internal successors, (3213), 2622 states have internal predecessors, (3213), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4717 transitions. [2021-12-18 03:27:07,003 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4717 transitions. Word has length 151 [2021-12-18 03:27:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:07,004 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 4717 transitions. [2021-12-18 03:27:07,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:27:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4717 transitions. [2021-12-18 03:27:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 03:27:07,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:07,030 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:07,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 03:27:07,030 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash 413846126, now seen corresponding path program 1 times [2021-12-18 03:27:07,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:07,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605010034] [2021-12-18 03:27:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:07,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 03:27:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:27:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:27:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 03:27:07,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:07,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605010034] [2021-12-18 03:27:07,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605010034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:07,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:27:07,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:27:07,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3967178] [2021-12-18 03:27:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:07,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:27:07,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:27:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:27:07,292 INFO L87 Difference]: Start difference. First operand 3493 states and 4717 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:27:09,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:13,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:13,902 INFO L93 Difference]: Finished difference Result 8753 states and 12077 transitions. [2021-12-18 03:27:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:27:13,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-18 03:27:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:13,936 INFO L225 Difference]: With dead ends: 8753 [2021-12-18 03:27:13,940 INFO L226 Difference]: Without dead ends: 5263 [2021-12-18 03:27:13,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:27:13,949 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 1181 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 432 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:13,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 5573 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1070 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-12-18 03:27:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2021-12-18 03:27:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 3505. [2021-12-18 03:27:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2579 states have (on average 1.250484683986041) internal successors, (3225), 2634 states have internal predecessors, (3225), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4729 transitions. [2021-12-18 03:27:14,062 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4729 transitions. Word has length 151 [2021-12-18 03:27:14,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:14,063 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 4729 transitions. [2021-12-18 03:27:14,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:27:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4729 transitions. [2021-12-18 03:27:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 03:27:14,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:14,066 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:14,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 03:27:14,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:14,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1898802128, now seen corresponding path program 1 times [2021-12-18 03:27:14,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:14,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174943345] [2021-12-18 03:27:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:14,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:27:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:27:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 03:27:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 03:27:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 03:27:14,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:14,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174943345] [2021-12-18 03:27:14,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174943345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:14,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:27:14,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 03:27:14,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484269621] [2021-12-18 03:27:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:14,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:27:14,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:27:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:27:14,287 INFO L87 Difference]: Start difference. First operand 3505 states and 4729 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:27:16,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:18,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:23,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:25,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:25,351 INFO L93 Difference]: Finished difference Result 8233 states and 11505 transitions. [2021-12-18 03:27:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:27:25,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-18 03:27:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:25,369 INFO L225 Difference]: With dead ends: 8233 [2021-12-18 03:27:25,369 INFO L226 Difference]: Without dead ends: 4731 [2021-12-18 03:27:25,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:27:25,378 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 749 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 483 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:25,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 3730 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1082 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2021-12-18 03:27:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2021-12-18 03:27:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3509. [2021-12-18 03:27:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2583 states have (on average 1.2500967866821526) internal successors, (3229), 2638 states have internal predecessors, (3229), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4733 transitions. [2021-12-18 03:27:25,502 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4733 transitions. Word has length 160 [2021-12-18 03:27:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:25,503 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4733 transitions. [2021-12-18 03:27:25,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:27:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4733 transitions. [2021-12-18 03:27:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 03:27:25,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:25,507 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-12-18 03:27:25,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 03:27:25,507 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash -458669311, now seen corresponding path program 1 times [2021-12-18 03:27:25,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:25,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623716118] [2021-12-18 03:27:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:25,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:27:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 03:27:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 03:27:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:27:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 03:27:25,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623716118] [2021-12-18 03:27:25,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623716118] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:25,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4055934] [2021-12-18 03:27:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:25,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:25,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:25,817 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) [2021-12-18 03:27:25,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 03:27:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:26,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 03:27:26,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-18 03:27:26,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:27:26,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4055934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:26,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:27:26,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-18 03:27:26,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54634968] [2021-12-18 03:27:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:26,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:27:26,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:27:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:27:26,602 INFO L87 Difference]: Start difference. First operand 3509 states and 4733 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:27:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:27,107 INFO L93 Difference]: Finished difference Result 7031 states and 9503 transitions. [2021-12-18 03:27:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:27:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2021-12-18 03:27:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:27,126 INFO L225 Difference]: With dead ends: 7031 [2021-12-18 03:27:27,126 INFO L226 Difference]: Without dead ends: 3525 [2021-12-18 03:27:27,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:27:27,134 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:27,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 03:27:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-12-18 03:27:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3513. [2021-12-18 03:27:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2587 states have (on average 1.2497100889060688) internal successors, (3233), 2642 states have internal predecessors, (3233), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4737 transitions. [2021-12-18 03:27:27,272 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4737 transitions. Word has length 173 [2021-12-18 03:27:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:27,273 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4737 transitions. [2021-12-18 03:27:27,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:27:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4737 transitions. [2021-12-18 03:27:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-18 03:27:27,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:27,275 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:27,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:27,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-18 03:27:27,496 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1697928550, now seen corresponding path program 1 times [2021-12-18 03:27:27,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36516824] [2021-12-18 03:27:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:27,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 03:27:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:27:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 03:27:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:27:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:27:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:27:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:27:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 03:27:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 03:27:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 03:27:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-18 03:27:27,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:27,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36516824] [2021-12-18 03:27:27,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36516824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:27,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584033125] [2021-12-18 03:27:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:27,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:27,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:27,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:27,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 03:27:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:28,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 03:27:28,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-18 03:27:28,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:27:28,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584033125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:28,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:27:28,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-18 03:27:28,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842342588] [2021-12-18 03:27:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:28,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:27:28,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:27:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:28,456 INFO L87 Difference]: Start difference. First operand 3513 states and 4737 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:27:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:28,544 INFO L93 Difference]: Finished difference Result 7039 states and 9511 transitions. [2021-12-18 03:27:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:27:28,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2021-12-18 03:27:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:28,556 INFO L225 Difference]: With dead ends: 7039 [2021-12-18 03:27:28,556 INFO L226 Difference]: Without dead ends: 3529 [2021-12-18 03:27:28,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:28,565 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:28,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2380 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:27:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-12-18 03:27:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3517. [2021-12-18 03:27:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2591 states have (on average 1.2493245851022772) internal successors, (3237), 2646 states have internal predecessors, (3237), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4741 transitions. [2021-12-18 03:27:28,692 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4741 transitions. Word has length 171 [2021-12-18 03:27:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:28,692 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4741 transitions. [2021-12-18 03:27:28,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:27:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4741 transitions. [2021-12-18 03:27:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-18 03:27:28,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:28,695 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:28,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:28,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-18 03:27:28,912 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1395907559, now seen corresponding path program 1 times [2021-12-18 03:27:28,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:28,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085227572] [2021-12-18 03:27:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:28,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 03:27:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:27:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 03:27:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:27:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:27:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 03:27:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:27:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:27:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 03:27:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 03:27:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 03:27:29,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:29,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085227572] [2021-12-18 03:27:29,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085227572] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:29,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974993879] [2021-12-18 03:27:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:29,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:29,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:29,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 03:27:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:29,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:27:29,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-18 03:27:29,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:27:29,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974993879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:29,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:27:29,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-18 03:27:29,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720554210] [2021-12-18 03:27:29,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:29,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:27:29,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:29,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:27:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:27:29,881 INFO L87 Difference]: Start difference. First operand 3517 states and 4741 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 03:27:30,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:30,015 INFO L93 Difference]: Finished difference Result 7058 states and 9510 transitions. [2021-12-18 03:27:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:27:30,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2021-12-18 03:27:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:30,025 INFO L225 Difference]: With dead ends: 7058 [2021-12-18 03:27:30,025 INFO L226 Difference]: Without dead ends: 3540 [2021-12-18 03:27:30,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:30,032 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 17 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:30,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3581 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:27:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2021-12-18 03:27:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3529. [2021-12-18 03:27:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2603 states have (on average 1.2477910103726468) internal successors, (3248), 2658 states have internal predecessors, (3248), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4752 transitions. [2021-12-18 03:27:30,135 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4752 transitions. Word has length 178 [2021-12-18 03:27:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:30,136 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4752 transitions. [2021-12-18 03:27:30,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 03:27:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4752 transitions. [2021-12-18 03:27:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 03:27:30,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:30,138 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-12-18 03:27:30,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:30,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:30,351 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 362521239, now seen corresponding path program 1 times [2021-12-18 03:27:30,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121571348] [2021-12-18 03:27:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:30,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:27:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 03:27:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 03:27:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 03:27:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-18 03:27:30,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:30,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121571348] [2021-12-18 03:27:30,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121571348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:30,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583726829] [2021-12-18 03:27:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:30,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:30,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:30,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:30,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 03:27:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:31,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 03:27:31,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-18 03:27:31,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:27:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583726829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:31,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:27:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-18 03:27:31,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583774290] [2021-12-18 03:27:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:31,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:27:31,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:27:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:27:31,472 INFO L87 Difference]: Start difference. First operand 3529 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:27:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:31,553 INFO L93 Difference]: Finished difference Result 7063 states and 9529 transitions. [2021-12-18 03:27:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:27:31,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-12-18 03:27:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:31,563 INFO L225 Difference]: With dead ends: 7063 [2021-12-18 03:27:31,564 INFO L226 Difference]: Without dead ends: 3537 [2021-12-18 03:27:31,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:27:31,571 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 1 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:31,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2381 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:27:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-18 03:27:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-12-18 03:27:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2607 states have (on average 1.2474108170310703) internal successors, (3252), 2662 states have internal predecessors, (3252), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-18 03:27:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4756 transitions. [2021-12-18 03:27:31,665 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4756 transitions. Word has length 176 [2021-12-18 03:27:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:31,666 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4756 transitions. [2021-12-18 03:27:31,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:27:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4756 transitions. [2021-12-18 03:27:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-18 03:27:31,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:31,668 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2021-12-18 03:27:31,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:31,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:31,889 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:31,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:31,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2077072147, now seen corresponding path program 1 times [2021-12-18 03:27:31,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:31,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535995071] [2021-12-18 03:27:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:31,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:27:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:27:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 03:27:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 03:27:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-18 03:27:32,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535995071] [2021-12-18 03:27:32,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535995071] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571132195] [2021-12-18 03:27:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:32,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:32,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 03:27:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:32,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:27:32,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-18 03:27:32,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:27:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-18 03:27:33,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571132195] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:27:33,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:27:33,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-18 03:27:33,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030682532] [2021-12-18 03:27:33,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:27:33,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 03:27:33,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 03:27:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:33,214 INFO L87 Difference]: Start difference. First operand 3533 states and 4756 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-18 03:27:37,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:39,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:42,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:44,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:45,616 INFO L93 Difference]: Finished difference Result 11006 states and 15756 transitions. [2021-12-18 03:27:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:27:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 178 [2021-12-18 03:27:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:45,641 INFO L225 Difference]: With dead ends: 11006 [2021-12-18 03:27:45,641 INFO L226 Difference]: Without dead ends: 7476 [2021-12-18 03:27:45,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:27:45,652 INFO L933 BasicCegarLoop]: 1598 mSDtfsCounter, 1764 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 647 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 6487 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:45,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2083 Valid, 6487 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2200 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2021-12-18 03:27:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2021-12-18 03:27:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 3581. [2021-12-18 03:27:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 2643 states have (on average 1.2485811577752555) internal successors, (3300), 2698 states have internal predecessors, (3300), 746 states have call successors, (746), 194 states have call predecessors, (746), 191 states have return successors, (782), 708 states have call predecessors, (782), 734 states have call successors, (782) [2021-12-18 03:27:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 4828 transitions. [2021-12-18 03:27:45,854 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 4828 transitions. Word has length 178 [2021-12-18 03:27:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:45,854 INFO L470 AbstractCegarLoop]: Abstraction has 3581 states and 4828 transitions. [2021-12-18 03:27:45,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-18 03:27:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 4828 transitions. [2021-12-18 03:27:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-18 03:27:45,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:45,857 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 03:27:45,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:46,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 03:27:46,072 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:46,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1462683652, now seen corresponding path program 2 times [2021-12-18 03:27:46,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:46,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765746824] [2021-12-18 03:27:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:46,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:27:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:27:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:27:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:27:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 03:27:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 03:27:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 03:27:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-18 03:27:46,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:46,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765746824] [2021-12-18 03:27:46,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765746824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:46,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689555251] [2021-12-18 03:27:46,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:27:46,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:46,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:46,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:46,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 03:27:46,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 03:27:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:27:46,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 03:27:46,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 03:27:47,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:27:47,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689555251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:47,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:27:47,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-12-18 03:27:47,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372779861] [2021-12-18 03:27:47,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:47,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:27:47,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:47,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:27:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:47,100 INFO L87 Difference]: Start difference. First operand 3581 states and 4828 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:27:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:47,218 INFO L93 Difference]: Finished difference Result 3603 states and 4865 transitions. [2021-12-18 03:27:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:27:47,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 217 [2021-12-18 03:27:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:47,228 INFO L225 Difference]: With dead ends: 3603 [2021-12-18 03:27:47,228 INFO L226 Difference]: Without dead ends: 3543 [2021-12-18 03:27:47,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:27:47,230 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 12 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4790 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:47,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4790 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:27:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-12-18 03:27:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3539. [2021-12-18 03:27:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2613 states have (on average 1.2460773057787984) internal successors, (3256), 2664 states have internal predecessors, (3256), 734 states have call successors, (734), 193 states have call predecessors, (734), 191 states have return successors, (774), 701 states have call predecessors, (774), 726 states have call successors, (774) [2021-12-18 03:27:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4764 transitions. [2021-12-18 03:27:47,327 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4764 transitions. Word has length 217 [2021-12-18 03:27:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:47,328 INFO L470 AbstractCegarLoop]: Abstraction has 3539 states and 4764 transitions. [2021-12-18 03:27:47,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:27:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4764 transitions. [2021-12-18 03:27:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-12-18 03:27:47,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:47,332 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:47,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:47,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-18 03:27:47,548 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1027306784, now seen corresponding path program 1 times [2021-12-18 03:27:47,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:47,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051689683] [2021-12-18 03:27:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:47,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:27:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:27:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:27:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:27:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 03:27:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:27:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 03:27:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:27:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 03:27:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-18 03:27:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-18 03:27:47,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:47,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051689683] [2021-12-18 03:27:47,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051689683] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:47,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608779887] [2021-12-18 03:27:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:47,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:47,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:47,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:47,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 03:27:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:48,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:27:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-18 03:27:48,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:27:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-18 03:27:49,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608779887] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:27:49,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:27:49,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-18 03:27:49,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789692816] [2021-12-18 03:27:49,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:27:49,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:27:49,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:27:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:27:49,099 INFO L87 Difference]: Start difference. First operand 3539 states and 4764 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 6 states have internal predecessors, (221), 4 states have call successors, (51), 6 states have call predecessors, (51), 2 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-12-18 03:27:53,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:55,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:27:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:56,468 INFO L93 Difference]: Finished difference Result 7430 states and 10232 transitions. [2021-12-18 03:27:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 03:27:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 6 states have internal predecessors, (221), 4 states have call successors, (51), 6 states have call predecessors, (51), 2 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 260 [2021-12-18 03:27:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:56,479 INFO L225 Difference]: With dead ends: 7430 [2021-12-18 03:27:56,480 INFO L226 Difference]: Without dead ends: 3894 [2021-12-18 03:27:56,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-12-18 03:27:56,487 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 958 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 798 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:56,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1010 Valid, 3182 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1642 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-12-18 03:27:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2021-12-18 03:27:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 3587. [2021-12-18 03:27:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 2649 states have (on average 1.2427331068327672) internal successors, (3292), 2700 states have internal predecessors, (3292), 746 states have call successors, (746), 193 states have call predecessors, (746), 191 states have return successors, (786), 713 states have call predecessors, (786), 738 states have call successors, (786) [2021-12-18 03:27:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 4824 transitions. [2021-12-18 03:27:56,601 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 4824 transitions. Word has length 260 [2021-12-18 03:27:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:56,602 INFO L470 AbstractCegarLoop]: Abstraction has 3587 states and 4824 transitions. [2021-12-18 03:27:56,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 6 states have internal predecessors, (221), 4 states have call successors, (51), 6 states have call predecessors, (51), 2 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-12-18 03:27:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 4824 transitions. [2021-12-18 03:27:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-18 03:27:56,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:56,608 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:56,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:56,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:56,827 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 372810446, now seen corresponding path program 2 times [2021-12-18 03:27:56,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:56,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141084172] [2021-12-18 03:27:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:56,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:27:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:27:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:27:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:27:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:27:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:27:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:27:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:27:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 03:27:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:27:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:27:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:27:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-18 03:27:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 03:27:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-18 03:27:57,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:57,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141084172] [2021-12-18 03:27:57,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141084172] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863278382] [2021-12-18 03:27:57,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:27:57,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:57,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:57,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:57,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 03:27:57,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 03:27:57,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:27:57,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 03:27:57,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-18 03:27:57,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:27:57,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863278382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:27:57,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:27:57,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-18 03:27:57,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050851513] [2021-12-18 03:27:57,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:27:57,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:27:57,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:27:57,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:27:57,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:57,965 INFO L87 Difference]: Start difference. First operand 3587 states and 4824 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 03:27:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:27:58,102 INFO L93 Difference]: Finished difference Result 7176 states and 9649 transitions. [2021-12-18 03:27:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:27:58,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 281 [2021-12-18 03:27:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:27:58,111 INFO L225 Difference]: With dead ends: 7176 [2021-12-18 03:27:58,111 INFO L226 Difference]: Without dead ends: 3592 [2021-12-18 03:27:58,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:27:58,117 INFO L933 BasicCegarLoop]: 2289 mSDtfsCounter, 1155 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:27:58,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 3469 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:27:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2021-12-18 03:27:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3575. [2021-12-18 03:27:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2639 states have (on average 1.2417582417582418) internal successors, (3277), 2691 states have internal predecessors, (3277), 744 states have call successors, (744), 192 states have call predecessors, (744), 191 states have return successors, (762), 711 states have call predecessors, (762), 726 states have call successors, (762) [2021-12-18 03:27:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4783 transitions. [2021-12-18 03:27:58,216 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4783 transitions. Word has length 281 [2021-12-18 03:27:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:27:58,216 INFO L470 AbstractCegarLoop]: Abstraction has 3575 states and 4783 transitions. [2021-12-18 03:27:58,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 03:27:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4783 transitions. [2021-12-18 03:27:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-18 03:27:58,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:27:58,221 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:27:58,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 03:27:58,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 03:27:58,442 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:27:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:27:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 79407439, now seen corresponding path program 1 times [2021-12-18 03:27:58,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:27:58,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995058120] [2021-12-18 03:27:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:58,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:27:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:27:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:27:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:27:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:27:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:27:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:27:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:27:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:27:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:27:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:27:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:27:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:27:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:27:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:27:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:27:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:27:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:27:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:27:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:27:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:27:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 03:27:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:27:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:27:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:27:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:27:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-18 03:27:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 03:27:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-18 03:27:58,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:27:58,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995058120] [2021-12-18 03:27:58,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995058120] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:27:58,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104319997] [2021-12-18 03:27:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:27:58,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:27:58,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:27:58,810 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:27:58,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 03:27:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:27:59,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:27:59,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:27:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-18 03:27:59,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:28:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-18 03:28:00,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104319997] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:28:00,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:28:00,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-18 03:28:00,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629646680] [2021-12-18 03:28:00,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:28:00,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:28:00,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:28:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:28:00,157 INFO L87 Difference]: Start difference. First operand 3575 states and 4783 transitions. Second operand has 10 states, 10 states have (on average 19.7) internal successors, (197), 6 states have internal predecessors, (197), 4 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-18 03:28:04,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:06,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:08,186 INFO L93 Difference]: Finished difference Result 7502 states and 10270 transitions. [2021-12-18 03:28:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 03:28:08,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 6 states have internal predecessors, (197), 4 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 281 [2021-12-18 03:28:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:08,214 INFO L225 Difference]: With dead ends: 7502 [2021-12-18 03:28:08,214 INFO L226 Difference]: Without dead ends: 3930 [2021-12-18 03:28:08,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-18 03:28:08,221 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 1183 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 1048 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1048 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:08,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 4762 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1048 Valid, 2438 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-12-18 03:28:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-12-18 03:28:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3623. [2021-12-18 03:28:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2675 states have (on average 1.2385046728971962) internal successors, (3313), 2727 states have internal predecessors, (3313), 756 states have call successors, (756), 192 states have call predecessors, (756), 191 states have return successors, (774), 723 states have call predecessors, (774), 738 states have call successors, (774) [2021-12-18 03:28:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 4843 transitions. [2021-12-18 03:28:08,346 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 4843 transitions. Word has length 281 [2021-12-18 03:28:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:08,346 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 4843 transitions. [2021-12-18 03:28:08,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.7) internal successors, (197), 6 states have internal predecessors, (197), 4 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-18 03:28:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 4843 transitions. [2021-12-18 03:28:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-18 03:28:08,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:08,353 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:08,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 03:28:08,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:28:08,580 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1268476691, now seen corresponding path program 1 times [2021-12-18 03:28:08,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:08,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999398614] [2021-12-18 03:28:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:08,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:28:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:28:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:28:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:28:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:28:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:28:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 03:28:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:28:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-18 03:28:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 03:28:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 03:28:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 03:28:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-18 03:28:08,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:08,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999398614] [2021-12-18 03:28:08,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999398614] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:28:08,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782238322] [2021-12-18 03:28:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:08,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:28:08,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:28:08,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:28:08,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 03:28:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:09,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:28:09,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:28:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-12-18 03:28:09,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:28:09,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782238322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:28:09,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:28:09,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-18 03:28:09,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417465310] [2021-12-18 03:28:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:28:09,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:28:09,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:28:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:28:09,942 INFO L87 Difference]: Start difference. First operand 3623 states and 4843 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 03:28:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:10,095 INFO L93 Difference]: Finished difference Result 8164 states and 11021 transitions. [2021-12-18 03:28:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:28:10,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 279 [2021-12-18 03:28:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:10,107 INFO L225 Difference]: With dead ends: 8164 [2021-12-18 03:28:10,107 INFO L226 Difference]: Without dead ends: 4544 [2021-12-18 03:28:10,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:28:10,114 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 219 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:10,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2741 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:28:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2021-12-18 03:28:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3631. [2021-12-18 03:28:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 2683 states have (on average 1.2377935147223258) internal successors, (3321), 2735 states have internal predecessors, (3321), 756 states have call successors, (756), 192 states have call predecessors, (756), 191 states have return successors, (774), 723 states have call predecessors, (774), 738 states have call successors, (774) [2021-12-18 03:28:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4851 transitions. [2021-12-18 03:28:10,229 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4851 transitions. Word has length 279 [2021-12-18 03:28:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:10,230 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4851 transitions. [2021-12-18 03:28:10,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 03:28:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4851 transitions. [2021-12-18 03:28:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-18 03:28:10,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:10,234 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:10,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 03:28:10,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:28:10,448 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1765573355, now seen corresponding path program 1 times [2021-12-18 03:28:10,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:10,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815643470] [2021-12-18 03:28:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:10,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:28:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:28:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:28:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:28:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:28:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:28:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 03:28:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:28:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-18 03:28:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 03:28:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 03:28:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 03:28:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-18 03:28:10,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815643470] [2021-12-18 03:28:10,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815643470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:28:10,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365514608] [2021-12-18 03:28:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:10,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:28:10,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:28:10,810 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:28:10,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 03:28:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:11,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:28:11,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:28:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-18 03:28:11,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:28:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-18 03:28:12,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365514608] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:28:12,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:28:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-18 03:28:12,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537205729] [2021-12-18 03:28:12,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:28:12,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:28:12,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:12,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:28:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:28:12,139 INFO L87 Difference]: Start difference. First operand 3631 states and 4851 transitions. Second operand has 10 states, 10 states have (on average 20.1) internal successors, (201), 6 states have internal predecessors, (201), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:28:15,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:17,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:18,932 INFO L93 Difference]: Finished difference Result 7590 states and 10366 transitions. [2021-12-18 03:28:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 03:28:18,932 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 6 states have internal predecessors, (201), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 279 [2021-12-18 03:28:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:18,943 INFO L225 Difference]: With dead ends: 7590 [2021-12-18 03:28:18,943 INFO L226 Difference]: Without dead ends: 3962 [2021-12-18 03:28:18,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-12-18 03:28:18,952 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 1058 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 961 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:18,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 2950 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 959 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-12-18 03:28:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-12-18 03:28:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3655. [2021-12-18 03:28:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2707 states have (on average 1.235685260435907) internal successors, (3345), 2759 states have internal predecessors, (3345), 756 states have call successors, (756), 192 states have call predecessors, (756), 191 states have return successors, (774), 723 states have call predecessors, (774), 738 states have call successors, (774) [2021-12-18 03:28:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4875 transitions. [2021-12-18 03:28:19,077 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4875 transitions. Word has length 279 [2021-12-18 03:28:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:19,078 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 4875 transitions. [2021-12-18 03:28:19,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 6 states have internal predecessors, (201), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:28:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4875 transitions. [2021-12-18 03:28:19,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-12-18 03:28:19,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:19,083 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:19,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 03:28:19,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-18 03:28:19,303 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 478688456, now seen corresponding path program 2 times [2021-12-18 03:28:19,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670970363] [2021-12-18 03:28:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:19,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:28:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:28:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:28:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:28:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:28:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:28:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:28:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:28:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:28:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:28:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:28:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:28:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:28:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-18 03:28:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 03:28:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-18 03:28:19,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:19,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670970363] [2021-12-18 03:28:19,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670970363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:28:19,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:28:19,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 03:28:19,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827632315] [2021-12-18 03:28:19,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:28:19,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:28:19,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:28:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:28:19,743 INFO L87 Difference]: Start difference. First operand 3655 states and 4875 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 03:28:24,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:26,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:28,052 INFO L93 Difference]: Finished difference Result 3973 states and 5502 transitions. [2021-12-18 03:28:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 03:28:28,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 302 [2021-12-18 03:28:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:28,062 INFO L225 Difference]: With dead ends: 3973 [2021-12-18 03:28:28,062 INFO L226 Difference]: Without dead ends: 3950 [2021-12-18 03:28:28,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-18 03:28:28,063 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 1148 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 998 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 5520 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:28,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 5520 Invalid, 3832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2832 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-12-18 03:28:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2021-12-18 03:28:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3643. [2021-12-18 03:28:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2698 states have (on average 1.234247590808006) internal successors, (3330), 2749 states have internal predecessors, (3330), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-12-18 03:28:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4855 transitions. [2021-12-18 03:28:28,173 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4855 transitions. Word has length 302 [2021-12-18 03:28:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:28,174 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 4855 transitions. [2021-12-18 03:28:28,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 03:28:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4855 transitions. [2021-12-18 03:28:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-12-18 03:28:28,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:28,179 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:28,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 03:28:28,179 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:28,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1768779575, now seen corresponding path program 2 times [2021-12-18 03:28:28,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:28,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616783994] [2021-12-18 03:28:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:28,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:28:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:28:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:28:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:28:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:28:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:28:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 03:28:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 03:28:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 03:28:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 03:28:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 03:28:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-18 03:28:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-18 03:28:28,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:28,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616783994] [2021-12-18 03:28:28,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616783994] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:28:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270288577] [2021-12-18 03:28:28,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:28:28,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:28:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:28:28,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:28:28,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 03:28:29,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 03:28:29,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:28:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 03:28:29,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:28:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-18 03:28:29,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:28:29,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270288577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:28:29,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:28:29,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-18 03:28:29,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117066894] [2021-12-18 03:28:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:28:29,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:28:29,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:28:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:28:29,434 INFO L87 Difference]: Start difference. First operand 3643 states and 4855 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-18 03:28:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:29,604 INFO L93 Difference]: Finished difference Result 4208 states and 5692 transitions. [2021-12-18 03:28:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:28:29,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 285 [2021-12-18 03:28:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:29,613 INFO L225 Difference]: With dead ends: 4208 [2021-12-18 03:28:29,613 INFO L226 Difference]: Without dead ends: 4197 [2021-12-18 03:28:29,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:28:29,615 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 628 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:29,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 4151 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:28:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-12-18 03:28:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 3643. [2021-12-18 03:28:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2698 states have (on average 1.2331356560415123) internal successors, (3327), 2749 states have internal predecessors, (3327), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-12-18 03:28:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4852 transitions. [2021-12-18 03:28:29,730 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4852 transitions. Word has length 285 [2021-12-18 03:28:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:29,731 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 4852 transitions. [2021-12-18 03:28:29,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-18 03:28:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4852 transitions. [2021-12-18 03:28:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-18 03:28:29,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:29,741 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:29,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 03:28:29,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-18 03:28:29,948 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -451781502, now seen corresponding path program 1 times [2021-12-18 03:28:29,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:29,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296843504] [2021-12-18 03:28:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:29,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:28:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:28:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:28:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:28:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:28:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:28:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 03:28:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 03:28:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 03:28:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 03:28:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 03:28:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-18 03:28:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-18 03:28:30,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:30,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296843504] [2021-12-18 03:28:30,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296843504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:28:30,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946886763] [2021-12-18 03:28:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:30,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:28:30,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:28:30,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:28:30,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 03:28:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:31,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:28:31,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:28:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-18 03:28:31,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:28:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-18 03:28:31,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946886763] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:28:31,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:28:31,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-18 03:28:31,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396450561] [2021-12-18 03:28:31,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:28:31,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:28:31,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:28:31,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:28:31,794 INFO L87 Difference]: Start difference. First operand 3643 states and 4852 transitions. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:28:36,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:38,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:39,645 INFO L93 Difference]: Finished difference Result 7718 states and 10484 transitions. [2021-12-18 03:28:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 03:28:39,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 287 [2021-12-18 03:28:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:39,655 INFO L225 Difference]: With dead ends: 7718 [2021-12-18 03:28:39,655 INFO L226 Difference]: Without dead ends: 4078 [2021-12-18 03:28:39,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-12-18 03:28:39,665 INFO L933 BasicCegarLoop]: 1117 mSDtfsCounter, 1081 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 959 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:39,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 5599 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 1926 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-18 03:28:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-12-18 03:28:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3775. [2021-12-18 03:28:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2830 states have (on average 1.2265017667844522) internal successors, (3471), 2881 states have internal predecessors, (3471), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-12-18 03:28:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4996 transitions. [2021-12-18 03:28:39,794 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4996 transitions. Word has length 287 [2021-12-18 03:28:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:39,795 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 4996 transitions. [2021-12-18 03:28:39,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (49), 6 states have call predecessors, (49), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:28:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4996 transitions. [2021-12-18 03:28:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-12-18 03:28:39,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:39,800 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:39,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 03:28:40,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-18 03:28:40,020 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash 978197859, now seen corresponding path program 1 times [2021-12-18 03:28:40,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:40,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298718243] [2021-12-18 03:28:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:40,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:28:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:28:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:28:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:28:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:28:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:28:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:28:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:28:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:28:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:28:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:28:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:28:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-18 03:28:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-18 03:28:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-18 03:28:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-18 03:28:40,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:40,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298718243] [2021-12-18 03:28:40,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298718243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:28:40,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:28:40,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:28:40,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516364843] [2021-12-18 03:28:40,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:28:40,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:28:40,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:28:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:28:40,396 INFO L87 Difference]: Start difference. First operand 3775 states and 4996 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 03:28:44,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:47,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:28:48,160 INFO L93 Difference]: Finished difference Result 9683 states and 13488 transitions. [2021-12-18 03:28:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 03:28:48,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 323 [2021-12-18 03:28:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:28:48,176 INFO L225 Difference]: With dead ends: 9683 [2021-12-18 03:28:48,176 INFO L226 Difference]: Without dead ends: 5911 [2021-12-18 03:28:48,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:28:48,185 INFO L933 BasicCegarLoop]: 1756 mSDtfsCounter, 1362 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 777 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 5019 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:28:48,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 5019 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 1998 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-12-18 03:28:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2021-12-18 03:28:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 3771. [2021-12-18 03:28:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2826 states have (on average 1.2254069355980184) internal successors, (3463), 2873 states have internal predecessors, (3463), 753 states have call successors, (753), 192 states have call predecessors, (753), 191 states have return successors, (772), 721 states have call predecessors, (772), 736 states have call successors, (772) [2021-12-18 03:28:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4988 transitions. [2021-12-18 03:28:48,331 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4988 transitions. Word has length 323 [2021-12-18 03:28:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:28:48,331 INFO L470 AbstractCegarLoop]: Abstraction has 3771 states and 4988 transitions. [2021-12-18 03:28:48,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 3 states have internal predecessors, (181), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 03:28:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4988 transitions. [2021-12-18 03:28:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-18 03:28:48,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:28:48,337 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:28:48,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-18 03:28:48,337 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:28:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:28:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash -256626405, now seen corresponding path program 1 times [2021-12-18 03:28:48,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:28:48,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176267945] [2021-12-18 03:28:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:28:48,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:28:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:28:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:28:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:28:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:28:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:28:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:28:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:28:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:28:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:28:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:28:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:28:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:28:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:28:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:28:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:28:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:28:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:28:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:28:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:28:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:28:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:28:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:28:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:28:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:28:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:28:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:28:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-18 03:28:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 03:28:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:28:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-18 03:28:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:28:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 03:28:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-18 03:28:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 03:28:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-18 03:28:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:28:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-18 03:28:48,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:28:48,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176267945] [2021-12-18 03:28:48,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176267945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:28:48,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:28:48,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 03:28:48,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220676783] [2021-12-18 03:28:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:28:48,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 03:28:48,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:28:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 03:28:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-18 03:28:48,834 INFO L87 Difference]: Start difference. First operand 3771 states and 4988 transitions. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 03:28:54,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:56,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:28:58,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:00,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:02,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:29:02,262 INFO L93 Difference]: Finished difference Result 5869 states and 7976 transitions. [2021-12-18 03:29:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 03:29:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 342 [2021-12-18 03:29:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:29:02,273 INFO L225 Difference]: With dead ends: 5869 [2021-12-18 03:29:02,273 INFO L226 Difference]: Without dead ends: 4062 [2021-12-18 03:29:02,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-12-18 03:29:02,277 INFO L933 BasicCegarLoop]: 1110 mSDtfsCounter, 923 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 767 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 6319 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:29:02,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 6319 Invalid, 4330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 3559 Invalid, 4 Unknown, 0 Unchecked, 13.1s Time] [2021-12-18 03:29:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-12-18 03:29:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3759. [2021-12-18 03:29:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2816 states have (on average 1.2254971590909092) internal successors, (3451), 2865 states have internal predecessors, (3451), 753 states have call successors, (753), 192 states have call predecessors, (753), 189 states have return successors, (768), 717 states have call predecessors, (768), 736 states have call successors, (768) [2021-12-18 03:29:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 4972 transitions. [2021-12-18 03:29:02,437 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 4972 transitions. Word has length 342 [2021-12-18 03:29:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:29:02,437 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 4972 transitions. [2021-12-18 03:29:02,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (35), 8 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 03:29:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 4972 transitions. [2021-12-18 03:29:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-18 03:29:02,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:29:02,444 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:29:02,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-18 03:29:02,444 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:29:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:29:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash 797329210, now seen corresponding path program 2 times [2021-12-18 03:29:02,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:29:02,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722514616] [2021-12-18 03:29:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:02,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:29:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:29:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:29:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:29:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:29:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:29:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:29:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:29:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:29:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:29:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:29:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:29:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:29:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:29:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 03:29:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:29:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-18 03:29:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:29:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-18 03:29:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 03:29:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 03:29:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 03:29:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-12-18 03:29:02,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:29:02,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722514616] [2021-12-18 03:29:02,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722514616] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:29:02,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989264956] [2021-12-18 03:29:02,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:29:02,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:29:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:29:02,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:29:02,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 03:29:03,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 03:29:03,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:29:03,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 3624 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:29:03,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:29:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-12-18 03:29:04,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:29:04,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989264956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:29:04,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:29:04,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-18 03:29:04,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805497974] [2021-12-18 03:29:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:29:04,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:29:04,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:29:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:29:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:29:04,339 INFO L87 Difference]: Start difference. First operand 3759 states and 4972 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 03:29:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:29:04,576 INFO L93 Difference]: Finished difference Result 7515 states and 9941 transitions. [2021-12-18 03:29:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:29:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 320 [2021-12-18 03:29:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:29:04,587 INFO L225 Difference]: With dead ends: 7515 [2021-12-18 03:29:04,587 INFO L226 Difference]: Without dead ends: 3759 [2021-12-18 03:29:04,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:29:04,594 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 378 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:29:04,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2720 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:29:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2021-12-18 03:29:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2021-12-18 03:29:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2816 states have (on average 1.2230113636363635) internal successors, (3444), 2865 states have internal predecessors, (3444), 753 states have call successors, (753), 192 states have call predecessors, (753), 189 states have return successors, (768), 717 states have call predecessors, (768), 736 states have call successors, (768) [2021-12-18 03:29:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 4965 transitions. [2021-12-18 03:29:04,719 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 4965 transitions. Word has length 320 [2021-12-18 03:29:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:29:04,719 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 4965 transitions. [2021-12-18 03:29:04,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-18 03:29:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 4965 transitions. [2021-12-18 03:29:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-12-18 03:29:04,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:29:04,724 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:29:04,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 03:29:04,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:29:04,942 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:29:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:29:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash 89812693, now seen corresponding path program 1 times [2021-12-18 03:29:04,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:29:04,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968404126] [2021-12-18 03:29:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:04,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:29:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:29:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:29:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:29:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:29:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:29:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:29:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:29:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:29:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:29:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:29:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:29:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:29:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:29:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 03:29:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:29:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-18 03:29:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:29:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-18 03:29:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 03:29:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 03:29:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 03:29:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:29:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-18 03:29:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2021-12-18 03:29:05,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:29:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968404126] [2021-12-18 03:29:05,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968404126] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:29:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586195669] [2021-12-18 03:29:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:05,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:29:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:29:05,843 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:29:05,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 03:29:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:06,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 3758 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 03:29:06,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:29:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-12-18 03:29:07,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:29:07,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586195669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:29:07,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:29:07,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2021-12-18 03:29:07,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693330947] [2021-12-18 03:29:07,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:29:07,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:29:07,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:29:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:29:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2021-12-18 03:29:07,314 INFO L87 Difference]: Start difference. First operand 3759 states and 4965 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 03:29:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:29:08,167 INFO L93 Difference]: Finished difference Result 9761 states and 13626 transitions. [2021-12-18 03:29:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 03:29:08,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 329 [2021-12-18 03:29:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:29:08,182 INFO L225 Difference]: With dead ends: 9761 [2021-12-18 03:29:08,182 INFO L226 Difference]: Without dead ends: 6005 [2021-12-18 03:29:08,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-12-18 03:29:08,190 INFO L933 BasicCegarLoop]: 3107 mSDtfsCounter, 2215 mSDsluCounter, 21644 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 24751 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:29:08,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 24751 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 03:29:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2021-12-18 03:29:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 1964. [2021-12-18 03:29:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1469 states have (on average 1.2198774676650783) internal successors, (1792), 1493 states have internal predecessors, (1792), 392 states have call successors, (392), 103 states have call predecessors, (392), 102 states have return successors, (403), 375 states have call predecessors, (403), 381 states have call successors, (403) [2021-12-18 03:29:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2587 transitions. [2021-12-18 03:29:08,297 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2587 transitions. Word has length 329 [2021-12-18 03:29:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:29:08,297 INFO L470 AbstractCegarLoop]: Abstraction has 1964 states and 2587 transitions. [2021-12-18 03:29:08,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 9 states have internal predecessors, (163), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 03:29:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2587 transitions. [2021-12-18 03:29:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-12-18 03:29:08,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:29:08,301 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:29:08,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-18 03:29:08,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-18 03:29:08,516 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:29:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:29:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash -975441059, now seen corresponding path program 1 times [2021-12-18 03:29:08,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:29:08,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058916701] [2021-12-18 03:29:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:08,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:29:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:29:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:29:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:29:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:29:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:29:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:29:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:29:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:29:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:29:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:29:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:29:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:29:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:29:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:29:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:29:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:29:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 03:29:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 03:29:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 03:29:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 03:29:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 03:29:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-18 03:29:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:29:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-18 03:29:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-18 03:29:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:08,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-18 03:29:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 03:29:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-12-18 03:29:09,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:29:09,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058916701] [2021-12-18 03:29:09,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058916701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:29:09,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:29:09,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 03:29:09,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884514403] [2021-12-18 03:29:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:29:09,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 03:29:09,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:29:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 03:29:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:29:09,012 INFO L87 Difference]: Start difference. First operand 1964 states and 2587 transitions. Second operand has 9 states, 9 states have (on average 22.0) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 03:29:13,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:15,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:17,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:21,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:29:22,077 INFO L93 Difference]: Finished difference Result 5022 states and 6975 transitions. [2021-12-18 03:29:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 03:29:22,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.0) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) Word has length 375 [2021-12-18 03:29:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:29:22,085 INFO L225 Difference]: With dead ends: 5022 [2021-12-18 03:29:22,085 INFO L226 Difference]: Without dead ends: 3061 [2021-12-18 03:29:22,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:29:22,089 INFO L933 BasicCegarLoop]: 1743 mSDtfsCounter, 1349 mSDsluCounter, 6137 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 750 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:29:22,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 7880 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 2934 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2021-12-18 03:29:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2021-12-18 03:29:22,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1972. [2021-12-18 03:29:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1475 states have (on average 1.2189830508474577) internal successors, (1798), 1499 states have internal predecessors, (1798), 392 states have call successors, (392), 103 states have call predecessors, (392), 104 states have return successors, (421), 377 states have call predecessors, (421), 381 states have call successors, (421) [2021-12-18 03:29:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2611 transitions. [2021-12-18 03:29:22,174 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2611 transitions. Word has length 375 [2021-12-18 03:29:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:29:22,174 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 2611 transitions. [2021-12-18 03:29:22,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.0) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 03:29:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2611 transitions. [2021-12-18 03:29:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-12-18 03:29:22,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:29:22,178 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:29:22,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-18 03:29:22,178 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:29:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:29:22,179 INFO L85 PathProgramCache]: Analyzing trace with hash 673297194, now seen corresponding path program 1 times [2021-12-18 03:29:22,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:29:22,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639310353] [2021-12-18 03:29:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:22,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:29:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:29:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:29:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:29:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:29:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:29:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:29:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:29:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:29:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:29:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:29:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:29:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:29:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:29:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:29:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:29:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 03:29:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:29:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 03:29:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 03:29:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:29:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 03:29:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 03:29:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 03:29:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2021-12-18 03:29:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-18 03:29:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-12-18 03:29:22,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:29:22,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639310353] [2021-12-18 03:29:22,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639310353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:29:22,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:29:22,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 03:29:22,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833555895] [2021-12-18 03:29:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:29:22,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 03:29:22,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:29:22,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 03:29:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:29:22,621 INFO L87 Difference]: Start difference. First operand 1972 states and 2611 transitions. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 4 states have internal predecessors, (205), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:29:27,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:29,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:32,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:34,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:29:35,416 INFO L93 Difference]: Finished difference Result 5034 states and 7029 transitions. [2021-12-18 03:29:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 03:29:35,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 4 states have internal predecessors, (205), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 395 [2021-12-18 03:29:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:29:35,426 INFO L225 Difference]: With dead ends: 5034 [2021-12-18 03:29:35,427 INFO L226 Difference]: Without dead ends: 3065 [2021-12-18 03:29:35,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:29:35,431 INFO L933 BasicCegarLoop]: 1757 mSDtfsCounter, 1316 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 735 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 7867 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:29:35,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 7867 Invalid, 3755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 3016 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2021-12-18 03:29:35,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2021-12-18 03:29:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 1976. [2021-12-18 03:29:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1479 states have (on average 1.2183908045977012) internal successors, (1802), 1501 states have internal predecessors, (1802), 392 states have call successors, (392), 103 states have call predecessors, (392), 104 states have return successors, (421), 379 states have call predecessors, (421), 381 states have call successors, (421) [2021-12-18 03:29:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2615 transitions. [2021-12-18 03:29:35,530 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2615 transitions. Word has length 395 [2021-12-18 03:29:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:29:35,531 INFO L470 AbstractCegarLoop]: Abstraction has 1976 states and 2615 transitions. [2021-12-18 03:29:35,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 4 states have internal predecessors, (205), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:29:35,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2615 transitions. [2021-12-18 03:29:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-12-18 03:29:35,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:29:35,535 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:29:35,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-18 03:29:35,535 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:29:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:29:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash -403178032, now seen corresponding path program 1 times [2021-12-18 03:29:35,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:29:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850251545] [2021-12-18 03:29:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:35,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:29:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:29:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:29:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:29:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:29:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:29:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:29:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:29:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:29:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:29:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:29:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:29:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:29:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:29:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:29:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:29:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:29:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 03:29:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 03:29:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 03:29:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 03:29:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:29:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-18 03:29:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-18 03:29:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 03:29:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-18 03:29:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-18 03:29:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 03:29:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-18 03:29:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-18 03:29:36,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:29:36,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850251545] [2021-12-18 03:29:36,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850251545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:29:36,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:29:36,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 03:29:36,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625455284] [2021-12-18 03:29:36,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:29:36,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 03:29:36,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:29:36,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 03:29:36,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:29:36,095 INFO L87 Difference]: Start difference. First operand 1976 states and 2615 transitions. Second operand has 13 states, 13 states have (on average 16.0) internal successors, (208), 7 states have internal predecessors, (208), 3 states have call successors, (41), 7 states have call predecessors, (41), 2 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-18 03:29:41,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:43,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:45,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:49,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:51,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:53,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:29:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:29:54,693 INFO L93 Difference]: Finished difference Result 5046 states and 7015 transitions. [2021-12-18 03:29:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 03:29:54,697 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 7 states have internal predecessors, (208), 3 states have call successors, (41), 7 states have call predecessors, (41), 2 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 391 [2021-12-18 03:29:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:29:54,705 INFO L225 Difference]: With dead ends: 5046 [2021-12-18 03:29:54,705 INFO L226 Difference]: Without dead ends: 3073 [2021-12-18 03:29:54,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-12-18 03:29:54,709 INFO L933 BasicCegarLoop]: 1756 mSDtfsCounter, 1358 mSDsluCounter, 11327 mSDsCounter, 0 mSdLazyCounter, 4735 mSolverCounterSat, 752 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 13083 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 4735 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:29:54,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 13083 Invalid, 5493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 4735 Invalid, 6 Unknown, 0 Unchecked, 18.3s Time] [2021-12-18 03:29:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2021-12-18 03:29:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 1980. [2021-12-18 03:29:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1481 states have (on average 1.2180958811613773) internal successors, (1804), 1505 states have internal predecessors, (1804), 392 states have call successors, (392), 103 states have call predecessors, (392), 106 states have return successors, (439), 379 states have call predecessors, (439), 381 states have call successors, (439) [2021-12-18 03:29:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2635 transitions. [2021-12-18 03:29:54,798 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2635 transitions. Word has length 391 [2021-12-18 03:29:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:29:54,798 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 2635 transitions. [2021-12-18 03:29:54,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 7 states have internal predecessors, (208), 3 states have call successors, (41), 7 states have call predecessors, (41), 2 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-18 03:29:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2635 transitions. [2021-12-18 03:29:54,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-12-18 03:29:54,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:29:54,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:29:54,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 03:29:54,802 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:29:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:29:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -599475305, now seen corresponding path program 1 times [2021-12-18 03:29:54,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:29:54,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655297542] [2021-12-18 03:29:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:29:54,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:29:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:29:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:29:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:29:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:29:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:29:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:29:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:29:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:29:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:29:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:29:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:29:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:29:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:29:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:29:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:29:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:29:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:29:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:29:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 03:29:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:29:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:29:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:29:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 03:29:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 03:29:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:29:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 03:29:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 03:29:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 03:29:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:29:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:29:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:29:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:29:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-18 03:29:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-12-18 03:29:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:29:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-12-18 03:29:55,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:29:55,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655297542] [2021-12-18 03:29:55,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655297542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:29:55,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:29:55,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 03:29:55,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317606659] [2021-12-18 03:29:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:29:55,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 03:29:55,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:29:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 03:29:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:29:55,339 INFO L87 Difference]: Start difference. First operand 1980 states and 2635 transitions. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 7 states have internal predecessors, (215), 3 states have call successors, (42), 7 states have call predecessors, (42), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-12-18 03:30:00,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:02,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:04,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:09,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:11,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:13,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:30:14,087 INFO L93 Difference]: Finished difference Result 5046 states and 7057 transitions. [2021-12-18 03:30:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 03:30:14,088 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 7 states have internal predecessors, (215), 3 states have call successors, (42), 7 states have call predecessors, (42), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) Word has length 411 [2021-12-18 03:30:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:30:14,095 INFO L225 Difference]: With dead ends: 5046 [2021-12-18 03:30:14,095 INFO L226 Difference]: Without dead ends: 3069 [2021-12-18 03:30:14,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-12-18 03:30:14,099 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 1554 mSDsluCounter, 11309 mSDsCounter, 0 mSdLazyCounter, 4751 mSolverCounterSat, 972 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 13075 SdHoareTripleChecker+Invalid, 5729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 4751 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:30:14,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1762 Valid, 13075 Invalid, 5729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [972 Valid, 4751 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2021-12-18 03:30:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-12-18 03:30:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1976. [2021-12-18 03:30:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1479 states have (on average 1.2183908045977012) internal successors, (1802), 1501 states have internal predecessors, (1802), 392 states have call successors, (392), 103 states have call predecessors, (392), 104 states have return successors, (421), 379 states have call predecessors, (421), 381 states have call successors, (421) [2021-12-18 03:30:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2615 transitions. [2021-12-18 03:30:14,191 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2615 transitions. Word has length 411 [2021-12-18 03:30:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:30:14,191 INFO L470 AbstractCegarLoop]: Abstraction has 1976 states and 2615 transitions. [2021-12-18 03:30:14,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 7 states have internal predecessors, (215), 3 states have call successors, (42), 7 states have call predecessors, (42), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-12-18 03:30:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2615 transitions. [2021-12-18 03:30:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-12-18 03:30:14,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:30:14,195 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:30:14,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-18 03:30:14,195 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:30:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:30:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -276829559, now seen corresponding path program 1 times [2021-12-18 03:30:14,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:30:14,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596655802] [2021-12-18 03:30:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:30:14,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:30:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:30:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:30:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:30:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:30:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:30:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:30:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:30:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:30:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:30:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:30:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:30:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:30:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:30:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:30:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:30:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:30:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:30:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:30:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:30:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:30:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:30:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:30:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:30:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:30:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:30:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:30:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:30:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 03:30:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 03:30:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 03:30:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 03:30:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:30:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:30:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:30:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:30:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:30:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:30:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-12-18 03:30:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-18 03:30:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 03:30:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-18 03:30:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-18 03:30:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-18 03:30:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-12-18 03:30:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-18 03:30:14,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:30:14,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596655802] [2021-12-18 03:30:14,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596655802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:30:14,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:30:14,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 03:30:14,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173832431] [2021-12-18 03:30:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:30:14,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 03:30:14,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:30:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 03:30:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-18 03:30:14,742 INFO L87 Difference]: Start difference. First operand 1976 states and 2615 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (44), 8 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 1 states have call successors, (41) [2021-12-18 03:30:19,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:21,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:23,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:30:25,796 INFO L93 Difference]: Finished difference Result 2205 states and 3005 transitions. [2021-12-18 03:30:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 03:30:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (44), 8 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 1 states have call successors, (41) Word has length 411 [2021-12-18 03:30:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:30:25,801 INFO L225 Difference]: With dead ends: 2205 [2021-12-18 03:30:25,801 INFO L226 Difference]: Without dead ends: 2129 [2021-12-18 03:30:25,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-12-18 03:30:25,803 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 1241 mSDsluCounter, 5233 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 1074 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 4465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:30:25,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 6326 Invalid, 4465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 3388 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2021-12-18 03:30:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2021-12-18 03:30:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1958. [2021-12-18 03:30:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1467 states have (on average 1.2167689161554192) internal successors, (1785), 1487 states have internal predecessors, (1785), 386 states have call successors, (386), 102 states have call predecessors, (386), 104 states have return successors, (418), 376 states have call predecessors, (418), 378 states have call successors, (418) [2021-12-18 03:30:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2589 transitions. [2021-12-18 03:30:25,890 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2589 transitions. Word has length 411 [2021-12-18 03:30:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:30:25,890 INFO L470 AbstractCegarLoop]: Abstraction has 1958 states and 2589 transitions. [2021-12-18 03:30:25,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (44), 8 states have call predecessors, (44), 2 states have return successors, (41), 2 states have call predecessors, (41), 1 states have call successors, (41) [2021-12-18 03:30:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2589 transitions. [2021-12-18 03:30:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-12-18 03:30:25,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:30:25,894 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:30:25,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-18 03:30:25,894 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:30:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:30:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash 661591388, now seen corresponding path program 1 times [2021-12-18 03:30:25,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:30:25,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226210034] [2021-12-18 03:30:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:30:25,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:30:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:30:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:30:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:30:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 03:30:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:30:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 03:30:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:30:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:30:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:30:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:30:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:30:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 03:30:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:30:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:30:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:30:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:30:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:30:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:30:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 03:30:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:30:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:30:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:30:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 03:30:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:30:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:30:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:30:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:30:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 03:30:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 03:30:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 03:30:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 03:30:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:30:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:30:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:30:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:30:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:30:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:30:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-12-18 03:30:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:30:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-18 03:30:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 03:30:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-18 03:30:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-18 03:30:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-12-18 03:30:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 03:30:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:30:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2021-12-18 03:30:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:30:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-12-18 03:30:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2021-12-18 03:30:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-12-18 03:30:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-18 03:30:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:30:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-18 03:30:26,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:30:26,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226210034] [2021-12-18 03:30:26,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226210034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:30:26,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:30:26,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 03:30:26,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473108298] [2021-12-18 03:30:26,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:30:26,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 03:30:26,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:30:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 03:30:26,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:30:26,550 INFO L87 Difference]: Start difference. First operand 1958 states and 2589 transitions. Second operand has 13 states, 13 states have (on average 19.076923076923077) internal successors, (248), 5 states have internal predecessors, (248), 2 states have call successors, (49), 9 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2021-12-18 03:30:31,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:33,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:30:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:30:36,045 INFO L93 Difference]: Finished difference Result 2102 states and 2816 transitions. [2021-12-18 03:30:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 03:30:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.076923076923077) internal successors, (248), 5 states have internal predecessors, (248), 2 states have call successors, (49), 9 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 451 [2021-12-18 03:30:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:30:36,047 INFO L225 Difference]: With dead ends: 2102 [2021-12-18 03:30:36,047 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 03:30:36,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-12-18 03:30:36,050 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 1141 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 900 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 6181 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:30:36,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 6181 Invalid, 4212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 3310 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2021-12-18 03:30:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 03:30:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 03:30:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:30:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 03:30:36,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 451 [2021-12-18 03:30:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:30:36,052 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 03:30:36,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.076923076923077) internal successors, (248), 5 states have internal predecessors, (248), 2 states have call successors, (49), 9 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2021-12-18 03:30:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 03:30:36,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 03:30:36,054 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 03:30:36,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-18 03:30:36,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-18 03:31:52,804 WARN L227 SmtUtils]: Spent 1.18m on a formula simplification that was a NOOP. DAG size: 77 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 03:33:02,594 WARN L227 SmtUtils]: Spent 1.16m on a formula simplification that was a NOOP. DAG size: 77 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15