./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9baad8c3f39120ab2251378cc0d6fe7b52fdd04109a6ac87357d1c2188f7d5d6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 03:40:59,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 03:40:59,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 03:40:59,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 03:40:59,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 03:40:59,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 03:40:59,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 03:40:59,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 03:40:59,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 03:40:59,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 03:40:59,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 03:40:59,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 03:40:59,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 03:40:59,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 03:40:59,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 03:40:59,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 03:40:59,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 03:40:59,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 03:40:59,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 03:40:59,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 03:40:59,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 03:40:59,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 03:40:59,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 03:40:59,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 03:40:59,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 03:40:59,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 03:40:59,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 03:40:59,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 03:40:59,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 03:40:59,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 03:40:59,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 03:40:59,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 03:40:59,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 03:40:59,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 03:40:59,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 03:40:59,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 03:40:59,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 03:40:59,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 03:40:59,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 03:40:59,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 03:40:59,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 03:40:59,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 03:40:59,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 03:40:59,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 03:40:59,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 03:40:59,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 03:40:59,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 03:40:59,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 03:40:59,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 03:40:59,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 03:40:59,166 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 03:40:59,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 03:40:59,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 03:40:59,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 03:40:59,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 03:40:59,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 03:40:59,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 03:40:59,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 03:40:59,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 03:40:59,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 03:40:59,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 03:40:59,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 03:40:59,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 03:40:59,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 03:40:59,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 03:40:59,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 03:40:59,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 03:40:59,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9baad8c3f39120ab2251378cc0d6fe7b52fdd04109a6ac87357d1c2188f7d5d6 [2021-11-17 03:40:59,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 03:40:59,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 03:40:59,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 03:40:59,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 03:40:59,371 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 03:40:59,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i [2021-11-17 03:40:59,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f7f0c70/329a2f970a594453903339ff275a3b88/FLAG7d634f8f2 [2021-11-17 03:41:00,087 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 03:41:00,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i [2021-11-17 03:41:00,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f7f0c70/329a2f970a594453903339ff275a3b88/FLAG7d634f8f2 [2021-11-17 03:41:00,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f7f0c70/329a2f970a594453903339ff275a3b88 [2021-11-17 03:41:00,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 03:41:00,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 03:41:00,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 03:41:00,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 03:41:00,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 03:41:00,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:00" (1/1) ... [2021-11-17 03:41:00,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb91898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:00, skipping insertion in model container [2021-11-17 03:41:00,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:00" (1/1) ... [2021-11-17 03:41:00,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 03:41:00,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 03:41:01,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i[299448,299461] [2021-11-17 03:41:01,810 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 03:41:01,877 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 03:41:02,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i[299448,299461] [2021-11-17 03:41:02,135 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 03:41:02,230 INFO L208 MainTranslator]: Completed translation [2021-11-17 03:41:02,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02 WrapperNode [2021-11-17 03:41:02,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 03:41:02,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 03:41:02,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 03:41:02,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 03:41:02,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,421 INFO L137 Inliner]: procedures = 222, calls = 2022, calls flagged for inlining = 78, calls inlined = 59, statements flattened = 3158 [2021-11-17 03:41:02,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 03:41:02,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 03:41:02,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 03:41:02,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 03:41:02,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 03:41:02,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 03:41:02,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 03:41:02,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 03:41:02,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (1/1) ... [2021-11-17 03:41:02,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 03:41:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:41:02,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 03:41:02,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 03:41:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-17 03:41:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-17 03:41:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-17 03:41:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-17 03:41:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_get_rc_config [2021-11-17 03:41:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_get_rc_config [2021-11-17 03:41:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 03:41:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 03:41:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 03:41:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 03:41:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 03:41:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 03:41:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 03:41:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 03:41:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-11-17 03:41:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-11-17 03:41:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 03:41:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 03:41:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 03:41:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 03:41:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-11-17 03:41:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-11-17 03:41:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 03:41:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 03:41:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_download_firmware [2021-11-17 03:41:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_download_firmware [2021-11-17 03:41:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-17 03:41:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-17 03:41:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 03:41:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 03:41:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-11-17 03:41:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-11-17 03:41:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 03:41:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 03:41:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_usb_talk [2021-11-17 03:41:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_usb_talk [2021-11-17 03:41:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-17 03:41:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-17 03:41:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 03:41:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 03:41:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-17 03:41:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-17 03:41:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 03:41:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 03:41:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_streaming_ctrl [2021-11-17 03:41:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_streaming_ctrl [2021-11-17 03:41:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-11-17 03:41:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-11-17 03:41:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 03:41:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 03:41:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 03:41:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i2c_mutex_of_dvb_usb_device [2021-11-17 03:41:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i2c_mutex_of_dvb_usb_device [2021-11-17 03:41:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-17 03:41:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-17 03:41:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 03:41:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 03:41:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2021-11-17 03:41:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2021-11-17 03:41:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-17 03:41:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-17 03:41:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 03:41:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 03:41:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 03:41:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 03:41:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 03:41:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_i2c_xfer [2021-11-17 03:41:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_i2c_xfer [2021-11-17 03:41:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_identify_state [2021-11-17 03:41:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_identify_state [2021-11-17 03:41:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 03:41:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 03:41:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-11-17 03:41:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-11-17 03:41:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 03:41:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 03:41:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 03:41:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 03:41:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 03:41:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 03:41:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 03:41:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure lme_firmware_switch [2021-11-17 03:41:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure lme_firmware_switch [2021-11-17 03:41:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-11-17 03:41:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-11-17 03:41:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure lme_coldreset [2021-11-17 03:41:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure lme_coldreset [2021-11-17 03:41:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_powerup [2021-11-17 03:41:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_powerup [2021-11-17 03:41:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-17 03:41:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-17 03:41:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 03:41:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 03:41:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 03:41:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_probe [2021-11-17 03:41:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_probe [2021-11-17 03:41:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-17 03:41:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-17 03:41:03,157 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 03:41:03,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 03:41:03,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 03:41:08,908 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 03:41:08,937 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 03:41:08,937 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 03:41:08,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:41:08 BoogieIcfgContainer [2021-11-17 03:41:08,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 03:41:08,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 03:41:08,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 03:41:08,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 03:41:08,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:41:00" (1/3) ... [2021-11-17 03:41:08,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e43356c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:08, skipping insertion in model container [2021-11-17 03:41:08,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:02" (2/3) ... [2021-11-17 03:41:08,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e43356c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:08, skipping insertion in model container [2021-11-17 03:41:08,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:41:08" (3/3) ... [2021-11-17 03:41:08,947 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb-v2--dvb-usb-lmedm04.ko-entry_point.cil.out.i [2021-11-17 03:41:08,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 03:41:08,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 03:41:08,995 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 03:41:08,999 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 03:41:09,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 03:41:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 731 states, 538 states have (on average 1.3828996282527881) internal successors, (744), 563 states have internal predecessors, (744), 151 states have call successors, (151), 41 states have call predecessors, (151), 40 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2021-11-17 03:41:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-17 03:41:09,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:41:09,060 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:41:09,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:41:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:41:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1846445218, now seen corresponding path program 1 times [2021-11-17 03:41:09,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:41:09,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415221183] [2021-11-17 03:41:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:41:09,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:41:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:41:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:41:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:41:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:41:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:41:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:41:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:41:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:41:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:41:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:41:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:41:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:41:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:41:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-17 03:41:10,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:41:10,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415221183] [2021-11-17 03:41:10,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415221183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:41:10,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:41:10,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 03:41:10,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402344436] [2021-11-17 03:41:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:41:10,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 03:41:10,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:41:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 03:41:10,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 03:41:10,054 INFO L87 Difference]: Start difference. First operand has 731 states, 538 states have (on average 1.3828996282527881) internal successors, (744), 563 states have internal predecessors, (744), 151 states have call successors, (151), 41 states have call predecessors, (151), 40 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:41:12,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:14,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:16,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:18,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:41:20,020 INFO L93 Difference]: Finished difference Result 1543 states and 2311 transitions. [2021-11-17 03:41:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 03:41:20,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 180 [2021-11-17 03:41:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:41:20,038 INFO L225 Difference]: With dead ends: 1543 [2021-11-17 03:41:20,039 INFO L226 Difference]: Without dead ends: 804 [2021-11-17 03:41:20,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:41:20,050 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 249 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 340 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:41:20,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2172 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 563 Invalid, 4 Unknown, 0 Unchecked, 9.8s Time] [2021-11-17 03:41:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-11-17 03:41:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 718. [2021-11-17 03:41:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 533 states have (on average 1.3696060037523452) internal successors, (730), 550 states have internal predecessors, (730), 145 states have call successors, (145), 40 states have call predecessors, (145), 39 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2021-11-17 03:41:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1011 transitions. [2021-11-17 03:41:20,135 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1011 transitions. Word has length 180 [2021-11-17 03:41:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:41:20,135 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1011 transitions. [2021-11-17 03:41:20,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:41:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1011 transitions. [2021-11-17 03:41:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-17 03:41:20,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:41:20,143 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:41:20,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 03:41:20,143 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:41:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:41:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -213408590, now seen corresponding path program 1 times [2021-11-17 03:41:20,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:41:20,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466791108] [2021-11-17 03:41:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:41:20,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:41:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:41:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:41:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:41:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:41:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:41:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:41:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:41:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:41:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:41:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:41:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:41:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:41:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:41:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-17 03:41:20,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:41:20,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466791108] [2021-11-17 03:41:20,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466791108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:41:20,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:41:20,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:41:20,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704655720] [2021-11-17 03:41:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:41:20,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:41:20,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:41:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:41:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:41:20,703 INFO L87 Difference]: Start difference. First operand 718 states and 1011 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:22,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:24,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:27,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:29,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:32,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:33,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:41:34,483 INFO L93 Difference]: Finished difference Result 2242 states and 3235 transitions. [2021-11-17 03:41:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:41:34,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 180 [2021-11-17 03:41:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:41:34,493 INFO L225 Difference]: With dead ends: 2242 [2021-11-17 03:41:34,493 INFO L226 Difference]: Without dead ends: 1558 [2021-11-17 03:41:34,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:41:34,498 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 1426 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 698 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:41:34,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 3718 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1275 Invalid, 4 Unknown, 0 Unchecked, 13.6s Time] [2021-11-17 03:41:34,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-11-17 03:41:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1368. [2021-11-17 03:41:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1024 states have (on average 1.375) internal successors, (1408), 1051 states have internal predecessors, (1408), 266 states have call successors, (266), 78 states have call predecessors, (266), 77 states have return successors, (257), 256 states have call predecessors, (257), 257 states have call successors, (257) [2021-11-17 03:41:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1931 transitions. [2021-11-17 03:41:34,589 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1931 transitions. Word has length 180 [2021-11-17 03:41:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:41:34,590 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1931 transitions. [2021-11-17 03:41:34,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1931 transitions. [2021-11-17 03:41:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-17 03:41:34,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:41:34,600 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:41:34,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 03:41:34,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:41:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:41:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1424102539, now seen corresponding path program 1 times [2021-11-17 03:41:34,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:41:34,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211213821] [2021-11-17 03:41:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:41:34,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:41:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:41:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:41:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:41:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:41:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:41:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:41:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:41:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:41:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:41:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:41:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:41:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:41:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:41:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-17 03:41:35,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:41:35,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211213821] [2021-11-17 03:41:35,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211213821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:41:35,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:41:35,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:41:35,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572670890] [2021-11-17 03:41:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:41:35,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:41:35,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:41:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:41:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:41:35,099 INFO L87 Difference]: Start difference. First operand 1368 states and 1931 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:37,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:39,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:41,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:41:43,394 INFO L93 Difference]: Finished difference Result 4322 states and 6256 transitions. [2021-11-17 03:41:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:41:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 180 [2021-11-17 03:41:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:41:43,410 INFO L225 Difference]: With dead ends: 4322 [2021-11-17 03:41:43,410 INFO L226 Difference]: Without dead ends: 2988 [2021-11-17 03:41:43,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:41:43,420 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1656 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1028 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:41:43,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 2652 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1028 Valid, 608 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2021-11-17 03:41:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-11-17 03:41:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2652. [2021-11-17 03:41:43,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1997 states have (on average 1.3775663495242865) internal successors, (2751), 2042 states have internal predecessors, (2751), 501 states have call successors, (501), 154 states have call predecessors, (501), 153 states have return successors, (492), 491 states have call predecessors, (492), 492 states have call successors, (492) [2021-11-17 03:41:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3744 transitions. [2021-11-17 03:41:43,517 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3744 transitions. Word has length 180 [2021-11-17 03:41:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:41:43,518 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3744 transitions. [2021-11-17 03:41:43,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3744 transitions. [2021-11-17 03:41:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-17 03:41:43,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:41:43,520 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:41:43,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 03:41:43,521 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:41:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:41:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2042366166, now seen corresponding path program 1 times [2021-11-17 03:41:43,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:41:43,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358098759] [2021-11-17 03:41:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:41:43,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:41:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:41:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:41:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:41:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:41:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:41:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:41:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:41:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:41:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:41:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:41:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:41:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:41:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:41:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-17 03:41:44,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:41:44,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358098759] [2021-11-17 03:41:44,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358098759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:41:44,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:41:44,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:41:44,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212147603] [2021-11-17 03:41:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:41:44,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:41:44,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:41:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:41:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:41:44,019 INFO L87 Difference]: Start difference. First operand 2652 states and 3744 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:46,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:50,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:41:50,957 INFO L93 Difference]: Finished difference Result 6788 states and 9675 transitions. [2021-11-17 03:41:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:41:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 183 [2021-11-17 03:41:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:41:50,975 INFO L225 Difference]: With dead ends: 6788 [2021-11-17 03:41:50,976 INFO L226 Difference]: Without dead ends: 4170 [2021-11-17 03:41:50,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:41:50,987 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 812 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 506 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:41:50,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3094 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 829 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-11-17 03:41:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-11-17 03:41:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3560. [2021-11-17 03:41:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2693 states have (on average 1.3676197549201634) internal successors, (3683), 2738 states have internal predecessors, (3683), 635 states have call successors, (635), 232 states have call predecessors, (635), 231 states have return successors, (626), 625 states have call predecessors, (626), 626 states have call successors, (626) [2021-11-17 03:41:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4944 transitions. [2021-11-17 03:41:51,182 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4944 transitions. Word has length 183 [2021-11-17 03:41:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:41:51,183 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 4944 transitions. [2021-11-17 03:41:51,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4944 transitions. [2021-11-17 03:41:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-17 03:41:51,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:41:51,185 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:41:51,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 03:41:51,186 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:41:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:41:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1410128186, now seen corresponding path program 1 times [2021-11-17 03:41:51,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:41:51,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021082660] [2021-11-17 03:41:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:41:51,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:41:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:41:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:41:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:41:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:41:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:41:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:41:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:41:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:41:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:41:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:41:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:41:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:41:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:41:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-11-17 03:41:51,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:41:51,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021082660] [2021-11-17 03:41:51,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021082660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:41:51,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:41:51,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:41:51,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857333326] [2021-11-17 03:41:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:41:51,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:41:51,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:41:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:41:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:41:51,515 INFO L87 Difference]: Start difference. First operand 3560 states and 4944 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:53,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:56,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:41:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:41:58,070 INFO L93 Difference]: Finished difference Result 10980 states and 15599 transitions. [2021-11-17 03:41:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:41:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 187 [2021-11-17 03:41:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:41:58,096 INFO L225 Difference]: With dead ends: 10980 [2021-11-17 03:41:58,096 INFO L226 Difference]: Without dead ends: 7464 [2021-11-17 03:41:58,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:41:58,105 INFO L933 BasicCegarLoop]: 1797 mSDtfsCounter, 1327 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 673 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:41:58,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 3732 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 763 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-11-17 03:41:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2021-11-17 03:41:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 6424. [2021-11-17 03:41:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6424 states, 4879 states have (on average 1.3697478991596639) internal successors, (6683), 4962 states have internal predecessors, (6683), 1125 states have call successors, (1125), 420 states have call predecessors, (1125), 419 states have return successors, (1116), 1113 states have call predecessors, (1116), 1116 states have call successors, (1116) [2021-11-17 03:41:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 8924 transitions. [2021-11-17 03:41:58,259 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 8924 transitions. Word has length 187 [2021-11-17 03:41:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:41:58,260 INFO L470 AbstractCegarLoop]: Abstraction has 6424 states and 8924 transitions. [2021-11-17 03:41:58,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-17 03:41:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 8924 transitions. [2021-11-17 03:41:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-17 03:41:58,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:41:58,261 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:41:58,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 03:41:58,261 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:41:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:41:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 660623640, now seen corresponding path program 1 times [2021-11-17 03:41:58,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:41:58,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065618147] [2021-11-17 03:41:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:41:58,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:41:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:41:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:41:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:41:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:41:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:41:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:41:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:41:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:41:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:41:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:41:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:41:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:41:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:41:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:41:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:41:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:41:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:41:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-17 03:41:58,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:41:58,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065618147] [2021-11-17 03:41:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065618147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:41:58,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:41:58,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:41:58,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575190416] [2021-11-17 03:41:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:41:58,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:41:58,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:41:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:41:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:41:58,728 INFO L87 Difference]: Start difference. First operand 6424 states and 8924 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:00,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:04,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:06,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:42:07,510 INFO L93 Difference]: Finished difference Result 8558 states and 12062 transitions. [2021-11-17 03:42:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:42:07,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 200 [2021-11-17 03:42:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:42:07,544 INFO L225 Difference]: With dead ends: 8558 [2021-11-17 03:42:07,544 INFO L226 Difference]: Without dead ends: 8554 [2021-11-17 03:42:07,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:42:07,549 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 1248 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 493 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:42:07,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 2295 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 695 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-17 03:42:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8554 states. [2021-11-17 03:42:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8554 to 7124. [2021-11-17 03:42:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 5384 states have (on average 1.3538261515601784) internal successors, (7289), 5465 states have internal predecessors, (7289), 1219 states have call successors, (1219), 521 states have call predecessors, (1219), 520 states have return successors, (1212), 1209 states have call predecessors, (1212), 1212 states have call successors, (1212) [2021-11-17 03:42:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 9720 transitions. [2021-11-17 03:42:07,765 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 9720 transitions. Word has length 200 [2021-11-17 03:42:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:42:07,768 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 9720 transitions. [2021-11-17 03:42:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 9720 transitions. [2021-11-17 03:42:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-17 03:42:07,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:42:07,771 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:42:07,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 03:42:07,771 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:42:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:42:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -995686152, now seen corresponding path program 1 times [2021-11-17 03:42:07,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:42:07,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049724020] [2021-11-17 03:42:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:42:07,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:42:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:42:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:42:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:42:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:42:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:42:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:42:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:42:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:42:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:42:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:42:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:42:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:42:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:42:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:42:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-17 03:42:08,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:42:08,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049724020] [2021-11-17 03:42:08,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049724020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:42:08,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:42:08,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:42:08,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754292801] [2021-11-17 03:42:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:42:08,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:42:08,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:42:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:42:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:42:08,245 INFO L87 Difference]: Start difference. First operand 7124 states and 9720 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:10,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:12,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:14,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:17,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:42:18,126 INFO L93 Difference]: Finished difference Result 8551 states and 12041 transitions. [2021-11-17 03:42:18,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 03:42:18,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 201 [2021-11-17 03:42:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:42:18,149 INFO L225 Difference]: With dead ends: 8551 [2021-11-17 03:42:18,150 INFO L226 Difference]: Without dead ends: 8548 [2021-11-17 03:42:18,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:42:18,152 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 1156 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 395 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-17 03:42:18,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1261 Valid, 2114 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 565 Invalid, 4 Unknown, 0 Unchecked, 9.7s Time] [2021-11-17 03:42:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8548 states. [2021-11-17 03:42:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8548 to 7123. [2021-11-17 03:42:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7123 states, 5384 states have (on average 1.3536404160475484) internal successors, (7288), 5464 states have internal predecessors, (7288), 1218 states have call successors, (1218), 521 states have call predecessors, (1218), 520 states have return successors, (1212), 1209 states have call predecessors, (1212), 1212 states have call successors, (1212) [2021-11-17 03:42:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 9718 transitions. [2021-11-17 03:42:18,337 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 9718 transitions. Word has length 201 [2021-11-17 03:42:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:42:18,337 INFO L470 AbstractCegarLoop]: Abstraction has 7123 states and 9718 transitions. [2021-11-17 03:42:18,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 9718 transitions. [2021-11-17 03:42:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-17 03:42:18,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:42:18,339 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:42:18,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 03:42:18,340 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:42:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:42:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash -801677285, now seen corresponding path program 1 times [2021-11-17 03:42:18,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:42:18,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781642466] [2021-11-17 03:42:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:42:18,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:42:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:42:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:42:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:42:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:42:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:42:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:42:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:42:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:42:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:42:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:42:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:42:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:42:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:42:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:42:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-17 03:42:18,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:42:18,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781642466] [2021-11-17 03:42:18,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781642466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:42:18,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:42:18,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:42:18,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849473531] [2021-11-17 03:42:18,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:42:18,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:42:18,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:42:18,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:42:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:42:18,836 INFO L87 Difference]: Start difference. First operand 7123 states and 9718 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:20,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:23,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:25,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:27,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:42:28,101 INFO L93 Difference]: Finished difference Result 8550 states and 12039 transitions. [2021-11-17 03:42:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 03:42:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 202 [2021-11-17 03:42:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:42:28,122 INFO L225 Difference]: With dead ends: 8550 [2021-11-17 03:42:28,122 INFO L226 Difference]: Without dead ends: 8547 [2021-11-17 03:42:28,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:42:28,126 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 1153 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 396 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:42:28,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 2110 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 568 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-17 03:42:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2021-11-17 03:42:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 7122. [2021-11-17 03:42:28,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7122 states, 5384 states have (on average 1.3534546805349184) internal successors, (7287), 5463 states have internal predecessors, (7287), 1217 states have call successors, (1217), 521 states have call predecessors, (1217), 520 states have return successors, (1212), 1209 states have call predecessors, (1212), 1212 states have call successors, (1212) [2021-11-17 03:42:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 9716 transitions. [2021-11-17 03:42:28,343 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 9716 transitions. Word has length 202 [2021-11-17 03:42:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:42:28,343 INFO L470 AbstractCegarLoop]: Abstraction has 7122 states and 9716 transitions. [2021-11-17 03:42:28,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 9716 transitions. [2021-11-17 03:42:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-17 03:42:28,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:42:28,345 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:42:28,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 03:42:28,345 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:42:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:42:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash 917635163, now seen corresponding path program 1 times [2021-11-17 03:42:28,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:42:28,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325986739] [2021-11-17 03:42:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:42:28,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:42:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:42:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:42:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:42:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:42:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:42:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:42:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:42:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:42:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:42:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:42:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:42:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:42:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:42:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:42:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-17 03:42:28,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:42:28,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325986739] [2021-11-17 03:42:28,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325986739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:42:28,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:42:28,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:42:28,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171037185] [2021-11-17 03:42:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:42:28,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:42:28,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:42:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:42:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:42:28,747 INFO L87 Difference]: Start difference. First operand 7122 states and 9716 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:30,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:32,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:34,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:42:37,334 INFO L93 Difference]: Finished difference Result 8549 states and 12037 transitions. [2021-11-17 03:42:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 03:42:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 203 [2021-11-17 03:42:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:42:37,350 INFO L225 Difference]: With dead ends: 8549 [2021-11-17 03:42:37,350 INFO L226 Difference]: Without dead ends: 8546 [2021-11-17 03:42:37,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:42:37,353 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 1154 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 389 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:42:37,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 2615 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 831 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2021-11-17 03:42:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8546 states. [2021-11-17 03:42:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8546 to 7121. [2021-11-17 03:42:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7121 states, 5384 states have (on average 1.3532689450222883) internal successors, (7286), 5462 states have internal predecessors, (7286), 1216 states have call successors, (1216), 521 states have call predecessors, (1216), 520 states have return successors, (1212), 1209 states have call predecessors, (1212), 1212 states have call successors, (1212) [2021-11-17 03:42:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 9714 transitions. [2021-11-17 03:42:37,526 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 9714 transitions. Word has length 203 [2021-11-17 03:42:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:42:37,526 INFO L470 AbstractCegarLoop]: Abstraction has 7121 states and 9714 transitions. [2021-11-17 03:42:37,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 9714 transitions. [2021-11-17 03:42:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-17 03:42:37,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:42:37,528 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:42:37,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 03:42:37,529 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:42:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:42:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1618248930, now seen corresponding path program 1 times [2021-11-17 03:42:37,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:42:37,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048159979] [2021-11-17 03:42:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:42:37,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:42:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:42:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:42:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:42:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:42:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:42:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:42:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:42:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:42:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:42:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:42:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:42:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:42:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:42:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:42:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-11-17 03:42:37,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:42:37,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048159979] [2021-11-17 03:42:37,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048159979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:42:37,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:42:37,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 03:42:37,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859058626] [2021-11-17 03:42:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:42:37,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:42:37,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:42:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:42:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 03:42:37,918 INFO L87 Difference]: Start difference. First operand 7121 states and 9714 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:39,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:42,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:44,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:47,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:49,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:52,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:42:52,220 INFO L93 Difference]: Finished difference Result 23584 states and 33932 transitions. [2021-11-17 03:42:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:42:52,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 204 [2021-11-17 03:42:52,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:42:52,269 INFO L225 Difference]: With dead ends: 23584 [2021-11-17 03:42:52,269 INFO L226 Difference]: Without dead ends: 16502 [2021-11-17 03:42:52,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:42:52,294 INFO L933 BasicCegarLoop]: 1240 mSDtfsCounter, 1331 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 631 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 4110 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-17 03:42:52,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 4110 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1377 Invalid, 5 Unknown, 0 Unchecked, 13.9s Time] [2021-11-17 03:42:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16502 states. [2021-11-17 03:42:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16502 to 13558. [2021-11-17 03:42:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13558 states, 10260 states have (on average 1.3564327485380117) internal successors, (13917), 10461 states have internal predecessors, (13917), 2318 states have call successors, (2318), 941 states have call predecessors, (2318), 979 states have return successors, (2753), 2299 states have call predecessors, (2753), 2313 states have call successors, (2753) [2021-11-17 03:42:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13558 states to 13558 states and 18988 transitions. [2021-11-17 03:42:52,813 INFO L78 Accepts]: Start accepts. Automaton has 13558 states and 18988 transitions. Word has length 204 [2021-11-17 03:42:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:42:52,815 INFO L470 AbstractCegarLoop]: Abstraction has 13558 states and 18988 transitions. [2021-11-17 03:42:52,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 03:42:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 13558 states and 18988 transitions. [2021-11-17 03:42:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-17 03:42:52,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:42:52,818 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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] [2021-11-17 03:42:52,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 03:42:52,819 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:42:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:42:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash 848728270, now seen corresponding path program 1 times [2021-11-17 03:42:52,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:42:52,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451294090] [2021-11-17 03:42:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:42:52,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:42:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:42:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:42:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:42:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:42:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:42:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:42:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:42:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:42:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:42:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:42:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:42:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:42:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:42:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:42:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:42:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:42:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:42:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:42:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:42:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:42:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-17 03:42:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-17 03:42:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:42:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2021-11-17 03:42:53,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:42:53,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451294090] [2021-11-17 03:42:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451294090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:42:53,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:42:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:42:53,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947515319] [2021-11-17 03:42:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:42:53,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:42:53,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:42:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:42:53,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:42:53,669 INFO L87 Difference]: Start difference. First operand 13558 states and 18988 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 03:42:55,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:42:59,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:43:01,056 INFO L93 Difference]: Finished difference Result 15820 states and 22861 transitions. [2021-11-17 03:43:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:43:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 290 [2021-11-17 03:43:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:43:01,139 INFO L225 Difference]: With dead ends: 15820 [2021-11-17 03:43:01,139 INFO L226 Difference]: Without dead ends: 15817 [2021-11-17 03:43:01,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:43:01,146 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 951 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 820 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:43:01,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 2431 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 1174 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-11-17 03:43:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15817 states. [2021-11-17 03:43:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15817 to 13669. [2021-11-17 03:43:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13669 states, 10340 states have (on average 1.3525145067698259) internal successors, (13985), 10572 states have internal predecessors, (13985), 2317 states have call successors, (2317), 941 states have call predecessors, (2317), 1011 states have return successors, (2849), 2299 states have call predecessors, (2849), 2313 states have call successors, (2849) [2021-11-17 03:43:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13669 states to 13669 states and 19151 transitions. [2021-11-17 03:43:01,612 INFO L78 Accepts]: Start accepts. Automaton has 13669 states and 19151 transitions. Word has length 290 [2021-11-17 03:43:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:43:01,612 INFO L470 AbstractCegarLoop]: Abstraction has 13669 states and 19151 transitions. [2021-11-17 03:43:01,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 03:43:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 13669 states and 19151 transitions. [2021-11-17 03:43:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-17 03:43:01,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:43:01,629 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-17 03:43:01,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 03:43:01,629 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:43:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:43:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1663260010, now seen corresponding path program 1 times [2021-11-17 03:43:01,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:43:01,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211779143] [2021-11-17 03:43:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:01,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:43:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:43:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:43:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:43:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:43:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:43:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:43:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:43:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:43:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:43:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:43:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:43:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:43:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:43:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:43:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:43:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:43:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:43:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:43:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-11-17 03:43:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 03:43:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2021-11-17 03:43:02,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:43:02,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211779143] [2021-11-17 03:43:02,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211779143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:43:02,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:43:02,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:43:02,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832342942] [2021-11-17 03:43:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:43:02,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:43:02,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:43:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:43:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:43:02,331 INFO L87 Difference]: Start difference. First operand 13669 states and 19151 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-17 03:43:04,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:07,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:43:09,672 INFO L93 Difference]: Finished difference Result 23011 states and 32588 transitions. [2021-11-17 03:43:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 03:43:09,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 323 [2021-11-17 03:43:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:43:09,694 INFO L225 Difference]: With dead ends: 23011 [2021-11-17 03:43:09,695 INFO L226 Difference]: Without dead ends: 9390 [2021-11-17 03:43:09,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-17 03:43:09,726 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 426 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 439 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 4859 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-17 03:43:09,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 4859 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1036 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-17 03:43:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2021-11-17 03:43:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 7432. [2021-11-17 03:43:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 5616 states have (on average 1.3372507122507122) internal successors, (7510), 5699 states have internal predecessors, (7510), 1268 states have call successors, (1268), 549 states have call predecessors, (1268), 547 states have return successors, (1266), 1255 states have call predecessors, (1266), 1266 states have call successors, (1266) [2021-11-17 03:43:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 10044 transitions. [2021-11-17 03:43:09,982 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 10044 transitions. Word has length 323 [2021-11-17 03:43:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:43:09,983 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 10044 transitions. [2021-11-17 03:43:09,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-17 03:43:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 10044 transitions. [2021-11-17 03:43:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-17 03:43:09,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:43:09,997 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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] [2021-11-17 03:43:09,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 03:43:09,998 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:43:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:43:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1355116372, now seen corresponding path program 1 times [2021-11-17 03:43:09,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:43:09,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626659283] [2021-11-17 03:43:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:09,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:43:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:43:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:43:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:43:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:43:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:43:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:43:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:43:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:43:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:43:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:43:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:43:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:43:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:43:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:43:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:43:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:43:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:43:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:43:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 03:43:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-11-17 03:43:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-11-17 03:43:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-11-17 03:43:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-11-17 03:43:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-11-17 03:43:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-11-17 03:43:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-11-17 03:43:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-11-17 03:43:10,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:43:10,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626659283] [2021-11-17 03:43:10,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626659283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:43:10,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:43:10,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:43:10,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193219181] [2021-11-17 03:43:10,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:43:10,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:43:10,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:43:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:43:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:43:10,577 INFO L87 Difference]: Start difference. First operand 7432 states and 10044 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (34), 7 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 03:43:13,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:14,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:16,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:19,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:21,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:23,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:25,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:43:26,999 INFO L93 Difference]: Finished difference Result 9644 states and 13521 transitions. [2021-11-17 03:43:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:43:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (34), 7 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 356 [2021-11-17 03:43:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:43:27,027 INFO L225 Difference]: With dead ends: 9644 [2021-11-17 03:43:27,027 INFO L226 Difference]: Without dead ends: 9641 [2021-11-17 03:43:27,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-17 03:43:27,032 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 361 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 364 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:43:27,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 4141 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1234 Invalid, 5 Unknown, 0 Unchecked, 16.1s Time] [2021-11-17 03:43:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2021-11-17 03:43:27,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 7432. [2021-11-17 03:43:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 5616 states have (on average 1.3333333333333333) internal successors, (7488), 5699 states have internal predecessors, (7488), 1268 states have call successors, (1268), 549 states have call predecessors, (1268), 547 states have return successors, (1266), 1255 states have call predecessors, (1266), 1266 states have call successors, (1266) [2021-11-17 03:43:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 10022 transitions. [2021-11-17 03:43:27,288 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 10022 transitions. Word has length 356 [2021-11-17 03:43:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:43:27,288 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 10022 transitions. [2021-11-17 03:43:27,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (34), 7 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 03:43:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 10022 transitions. [2021-11-17 03:43:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-17 03:43:27,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:43:27,312 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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] [2021-11-17 03:43:27,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 03:43:27,312 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:43:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:43:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1790087464, now seen corresponding path program 1 times [2021-11-17 03:43:27,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:43:27,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829282880] [2021-11-17 03:43:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:27,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:43:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:43:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:43:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:43:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:43:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:43:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:43:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:43:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:43:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:43:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:43:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:43:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:43:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:43:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:43:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:43:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:43:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:43:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:43:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-17 03:43:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-11-17 03:43:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-17 03:43:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-11-17 03:43:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 03:43:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 03:43:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-11-17 03:43:27,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:43:27,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829282880] [2021-11-17 03:43:27,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829282880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:43:27,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:43:27,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:43:27,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987948200] [2021-11-17 03:43:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:43:27,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:43:27,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:43:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:43:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:43:27,876 INFO L87 Difference]: Start difference. First operand 7432 states and 10022 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 03:43:29,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:31,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:34,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:36,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:43:38,649 INFO L93 Difference]: Finished difference Result 17448 states and 24135 transitions. [2021-11-17 03:43:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 03:43:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 337 [2021-11-17 03:43:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:43:38,676 INFO L225 Difference]: With dead ends: 17448 [2021-11-17 03:43:38,677 INFO L226 Difference]: Without dead ends: 10064 [2021-11-17 03:43:38,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:43:38,693 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 372 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 393 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-17 03:43:38,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 3893 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 894 Invalid, 4 Unknown, 0 Unchecked, 10.3s Time] [2021-11-17 03:43:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2021-11-17 03:43:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 7784. [2021-11-17 03:43:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 5880 states have (on average 1.327891156462585) internal successors, (7808), 5963 states have internal predecessors, (7808), 1348 states have call successors, (1348), 557 states have call predecessors, (1348), 555 states have return successors, (1346), 1335 states have call predecessors, (1346), 1346 states have call successors, (1346) [2021-11-17 03:43:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 10502 transitions. [2021-11-17 03:43:39,023 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 10502 transitions. Word has length 337 [2021-11-17 03:43:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:43:39,024 INFO L470 AbstractCegarLoop]: Abstraction has 7784 states and 10502 transitions. [2021-11-17 03:43:39,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 03:43:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 10502 transitions. [2021-11-17 03:43:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-17 03:43:39,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:43:39,040 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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] [2021-11-17 03:43:39,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 03:43:39,040 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:43:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:43:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -55279702, now seen corresponding path program 1 times [2021-11-17 03:43:39,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:43:39,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938197047] [2021-11-17 03:43:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:39,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:43:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:43:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:43:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:43:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:43:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:43:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:43:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:43:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:43:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:43:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:43:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:43:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:43:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:43:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:43:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:43:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:43:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:43:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:43:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-17 03:43:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-11-17 03:43:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-17 03:43:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-11-17 03:43:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 03:43:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 03:43:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-11-17 03:43:39,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:43:39,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938197047] [2021-11-17 03:43:39,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938197047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:43:39,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:43:39,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:43:39,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203150222] [2021-11-17 03:43:39,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:43:39,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:43:39,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:43:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:43:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:43:39,520 INFO L87 Difference]: Start difference. First operand 7784 states and 10502 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 03:43:41,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:44,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:43:45,850 INFO L93 Difference]: Finished difference Result 17800 states and 24583 transitions. [2021-11-17 03:43:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 03:43:45,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 337 [2021-11-17 03:43:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:43:45,880 INFO L225 Difference]: With dead ends: 17800 [2021-11-17 03:43:45,880 INFO L226 Difference]: Without dead ends: 10064 [2021-11-17 03:43:45,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:43:45,899 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 344 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 375 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-17 03:43:45,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3916 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 898 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-17 03:43:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2021-11-17 03:43:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 7904. [2021-11-17 03:43:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7904 states, 5960 states have (on average 1.3208053691275168) internal successors, (7872), 6043 states have internal predecessors, (7872), 1388 states have call successors, (1388), 557 states have call predecessors, (1388), 555 states have return successors, (1386), 1375 states have call predecessors, (1386), 1386 states have call successors, (1386) [2021-11-17 03:43:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7904 states to 7904 states and 10646 transitions. [2021-11-17 03:43:46,250 INFO L78 Accepts]: Start accepts. Automaton has 7904 states and 10646 transitions. Word has length 337 [2021-11-17 03:43:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:43:46,251 INFO L470 AbstractCegarLoop]: Abstraction has 7904 states and 10646 transitions. [2021-11-17 03:43:46,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 03:43:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7904 states and 10646 transitions. [2021-11-17 03:43:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-17 03:43:46,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:43:46,266 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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] [2021-11-17 03:43:46,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 03:43:46,266 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:43:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:43:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1850827140, now seen corresponding path program 1 times [2021-11-17 03:43:46,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:43:46,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026664411] [2021-11-17 03:43:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:46,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:43:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:43:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:43:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:43:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:43:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:43:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:43:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:43:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:43:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:43:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:43:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:43:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:43:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:43:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:43:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:43:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:43:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:43:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:43:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-17 03:43:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-17 03:43:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 03:43:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-17 03:43:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-17 03:43:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-11-17 03:43:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-11-17 03:43:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-17 03:43:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-11-17 03:43:46,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:43:46,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026664411] [2021-11-17 03:43:46,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026664411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:43:46,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:43:46,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:43:46,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25950240] [2021-11-17 03:43:46,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:43:46,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:43:46,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:43:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:43:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:43:46,914 INFO L87 Difference]: Start difference. First operand 7904 states and 10646 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-17 03:43:48,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:51,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:53,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:43:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:43:57,707 INFO L93 Difference]: Finished difference Result 18666 states and 25679 transitions. [2021-11-17 03:43:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:43:57,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 340 [2021-11-17 03:43:57,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:43:57,731 INFO L225 Difference]: With dead ends: 18666 [2021-11-17 03:43:57,731 INFO L226 Difference]: Without dead ends: 10810 [2021-11-17 03:43:57,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:43:57,746 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 745 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 646 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:43:57,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 4378 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 2037 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2021-11-17 03:43:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10810 states. [2021-11-17 03:43:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10810 to 8249. [2021-11-17 03:43:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8249 states, 6217 states have (on average 1.3165513913463085) internal successors, (8185), 6300 states have internal predecessors, (8185), 1468 states have call successors, (1468), 565 states have call predecessors, (1468), 563 states have return successors, (1466), 1455 states have call predecessors, (1466), 1466 states have call successors, (1466) [2021-11-17 03:43:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8249 states to 8249 states and 11119 transitions. [2021-11-17 03:43:58,044 INFO L78 Accepts]: Start accepts. Automaton has 8249 states and 11119 transitions. Word has length 340 [2021-11-17 03:43:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:43:58,045 INFO L470 AbstractCegarLoop]: Abstraction has 8249 states and 11119 transitions. [2021-11-17 03:43:58,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-17 03:43:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 8249 states and 11119 transitions. [2021-11-17 03:43:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-17 03:43:58,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:43:58,059 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 3, 3, 3, 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] [2021-11-17 03:43:58,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 03:43:58,059 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:43:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:43:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1305450072, now seen corresponding path program 1 times [2021-11-17 03:43:58,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:43:58,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018904673] [2021-11-17 03:43:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:58,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:43:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:43:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:43:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:43:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:43:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:43:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:43:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:43:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:43:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:43:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:43:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:43:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:43:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:43:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:43:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:43:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:43:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:43:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:43:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:43:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:43:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-17 03:43:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-11-17 03:43:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-11-17 03:43:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-11-17 03:43:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-17 03:43:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-11-17 03:43:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-11-17 03:43:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-11-17 03:43:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2021-11-17 03:43:58,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:43:58,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018904673] [2021-11-17 03:43:58,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018904673] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:43:58,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413413740] [2021-11-17 03:43:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:43:58,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:43:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:43:58,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:43:58,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 03:43:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:43:59,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 4125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 03:43:59,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:43:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2021-11-17 03:43:59,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:43:59,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413413740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:43:59,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:43:59,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-17 03:43:59,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726969397] [2021-11-17 03:43:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:43:59,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 03:43:59,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:43:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 03:43:59,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:43:59,790 INFO L87 Difference]: Start difference. First operand 8249 states and 11119 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 03:44:01,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:44:02,046 INFO L93 Difference]: Finished difference Result 12777 states and 17215 transitions. [2021-11-17 03:44:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 03:44:02,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 346 [2021-11-17 03:44:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:44:02,056 INFO L225 Difference]: With dead ends: 12777 [2021-11-17 03:44:02,056 INFO L226 Difference]: Without dead ends: 4576 [2021-11-17 03:44:02,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:44:02,068 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 912 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:44:02,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 1180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-17 03:44:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-11-17 03:44:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4574. [2021-11-17 03:44:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 3442 states have (on average 1.3126089482858803) internal successors, (4518), 3484 states have internal predecessors, (4518), 815 states have call successors, (815), 318 states have call predecessors, (815), 316 states have return successors, (813), 807 states have call predecessors, (813), 813 states have call successors, (813) [2021-11-17 03:44:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 6146 transitions. [2021-11-17 03:44:02,209 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 6146 transitions. Word has length 346 [2021-11-17 03:44:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:44:02,210 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 6146 transitions. [2021-11-17 03:44:02,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 03:44:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 6146 transitions. [2021-11-17 03:44:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-17 03:44:02,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:44:02,217 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 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] [2021-11-17 03:44:02,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 03:44:02,431 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,SelfDestructingSolverStorable16 [2021-11-17 03:44:02,432 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:44:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:44:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash 5459974, now seen corresponding path program 1 times [2021-11-17 03:44:02,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:44:02,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574483488] [2021-11-17 03:44:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:44:02,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:44:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:44:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:44:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:44:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:44:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:44:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:44:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:44:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:44:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:44:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:44:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:44:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:44:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:44:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:44:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:44:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:44:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:44:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:44:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-17 03:44:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-17 03:44:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 03:44:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-17 03:44:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-17 03:44:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-11-17 03:44:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-11-17 03:44:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-17 03:44:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2021-11-17 03:44:03,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:44:03,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574483488] [2021-11-17 03:44:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574483488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:44:03,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:44:03,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:44:03,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814248096] [2021-11-17 03:44:03,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:44:03,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:44:03,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:44:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:44:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:44:03,068 INFO L87 Difference]: Start difference. First operand 4574 states and 6146 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 03:44:04,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:06,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:08,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:11,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:44:14,053 INFO L93 Difference]: Finished difference Result 10446 states and 14357 transitions. [2021-11-17 03:44:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:44:14,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 340 [2021-11-17 03:44:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:44:14,064 INFO L225 Difference]: With dead ends: 10446 [2021-11-17 03:44:14,065 INFO L226 Difference]: Without dead ends: 5993 [2021-11-17 03:44:14,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:44:14,071 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 695 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 616 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 4319 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:44:14,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 4319 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 2031 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-11-17 03:44:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2021-11-17 03:44:14,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 4589. [2021-11-17 03:44:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4589 states, 3452 states have (on average 1.309385863267671) internal successors, (4520), 3494 states have internal predecessors, (4520), 820 states have call successors, (820), 318 states have call predecessors, (820), 316 states have return successors, (818), 812 states have call predecessors, (818), 818 states have call successors, (818) [2021-11-17 03:44:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4589 states to 4589 states and 6158 transitions. [2021-11-17 03:44:14,237 INFO L78 Accepts]: Start accepts. Automaton has 4589 states and 6158 transitions. Word has length 340 [2021-11-17 03:44:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:44:14,238 INFO L470 AbstractCegarLoop]: Abstraction has 4589 states and 6158 transitions. [2021-11-17 03:44:14,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 03:44:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4589 states and 6158 transitions. [2021-11-17 03:44:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-17 03:44:14,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:44:14,245 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 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, 1, 1, 1, 1, 1] [2021-11-17 03:44:14,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 03:44:14,245 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:44:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:44:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1594706118, now seen corresponding path program 1 times [2021-11-17 03:44:14,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:44:14,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492465428] [2021-11-17 03:44:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:44:14,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:44:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:44:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:44:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:44:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:44:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 03:44:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 03:44:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 03:44:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 03:44:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 03:44:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 03:44:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 03:44:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 03:44:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 03:44:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 03:44:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 03:44:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-17 03:44:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:44:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:44:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:44:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:44:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-17 03:44:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-11-17 03:44:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-11-17 03:44:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-11-17 03:44:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 03:44:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 03:44:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-11-17 03:44:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:44:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-11-17 03:44:14,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:44:14,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492465428] [2021-11-17 03:44:14,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492465428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:44:14,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:44:14,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 03:44:14,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34859968] [2021-11-17 03:44:14,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:44:14,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 03:44:14,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:44:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 03:44:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:44:14,789 INFO L87 Difference]: Start difference. First operand 4589 states and 6158 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (31), 5 states have call predecessors, (31), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 03:44:16,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:19,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:44:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:44:20,791 INFO L93 Difference]: Finished difference Result 5801 states and 7983 transitions. [2021-11-17 03:44:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 03:44:20,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (31), 5 states have call predecessors, (31), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 344 [2021-11-17 03:44:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:44:20,793 INFO L225 Difference]: With dead ends: 5801 [2021-11-17 03:44:20,793 INFO L226 Difference]: Without dead ends: 0 [2021-11-17 03:44:20,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:44:20,802 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 404 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 463 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-17 03:44:20,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 4205 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 723 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-17 03:44:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-17 03:44:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-17 03:44:20,802 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) [2021-11-17 03:44:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-17 03:44:20,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 344 [2021-11-17 03:44:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:44:20,805 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-17 03:44:20,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (31), 5 states have call predecessors, (31), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 03:44:20,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-17 03:44:20,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-17 03:44:20,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-17 03:44:20,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 03:44:20,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-17 03:44:44,996 WARN L227 SmtUtils]: Spent 24.03s on a formula simplification. DAG size of input: 113 DAG size of output: 105 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 03:44:51,505 WARN L227 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 111 DAG size of output: 109 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 03:45:14,989 WARN L227 SmtUtils]: Spent 23.48s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 03:46:01,864 WARN L227 SmtUtils]: Spent 46.87s on a formula simplification. DAG size of input: 116 DAG size of output: 108 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 03:46:08,349 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 102 DAG size of output: 100 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 03:46:23,456 WARN L227 SmtUtils]: Spent 15.11s on a formula simplification. DAG size of input: 117 DAG size of output: 115 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-17 03:51:53,824 WARN L227 SmtUtils]: Spent 5.51m on a formula simplification. DAG size of input: 118 DAG size of output: 116 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15