./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:21:05,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:21:05,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:21:05,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:21:05,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:21:05,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:21:05,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:21:05,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:21:05,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:21:05,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:21:05,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:21:05,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:21:05,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:21:05,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:21:05,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:21:05,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:21:05,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:21:05,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:21:05,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:21:05,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:21:05,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:21:05,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:21:05,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:21:05,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:21:05,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:21:05,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:21:05,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:21:05,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:21:05,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:21:05,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:21:05,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:21:05,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:21:05,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:21:05,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:21:05,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:21:05,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:21:05,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:21:05,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:21:05,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:21:05,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:21:05,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:21:05,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:21:05,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:21:05,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:21:05,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:21:05,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:21:05,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:21:05,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:21:05,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:21:05,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:21:05,558 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:21:05,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:21:05,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:21:05,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:21:05,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:21:05,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:21:05,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:21:05,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:21:05,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:21:05,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:21:05,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:21:05,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:21:05,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:21:05,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:21:05,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:21:05,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:21:05,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:21:05,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:21:05,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:21:05,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:21:05,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:21:05,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:21:05,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:21:05,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9baad8c3f39120ab2251378cc0d6fe7b52fdd04109a6ac87357d1c2188f7d5d6 [2021-12-16 04:21:05,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:21:05,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:21:05,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:21:05,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:21:05,796 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:21:05,797 INFO L432 ainManager$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 [2021-12-16 04:21:05,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f2706ae/e6d120588a464d538d807301a03a0196/FLAG3f58b1476 [2021-12-16 04:21:06,438 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:21:06,438 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 [2021-12-16 04:21:06,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f2706ae/e6d120588a464d538d807301a03a0196/FLAG3f58b1476 [2021-12-16 04:21:06,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8f2706ae/e6d120588a464d538d807301a03a0196 [2021-12-16 04:21:06,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:21:06,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:21:06,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:21:06,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:21:06,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:21:06,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:21:06" (1/1) ... [2021-12-16 04:21:06,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4de1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:06, skipping insertion in model container [2021-12-16 04:21:06,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:21:06" (1/1) ... [2021-12-16 04:21:06,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:21:06,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:21:08,079 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] [2021-12-16 04:21:08,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:21:08,388 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:21:08,662 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] [2021-12-16 04:21:08,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:21:08,774 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:21:08,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08 WrapperNode [2021-12-16 04:21:08,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:21:08,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:21:08,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:21:08,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:21:08,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:08,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:08,994 INFO L137 Inliner]: procedures = 222, calls = 2022, calls flagged for inlining = 78, calls inlined = 59, statements flattened = 3180 [2021-12-16 04:21:08,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:21:08,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:21:08,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:21:08,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:21:09,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:21:09,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:21:09,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:21:09,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:21:09,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (1/1) ... [2021-12-16 04:21:09,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:21:09,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:21:09,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 04:21:09,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 04:21:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-16 04:21:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-16 04:21:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 04:21:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 04:21:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_get_rc_config [2021-12-16 04:21:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_get_rc_config [2021-12-16 04:21:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:21:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:21:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:21:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:21:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-16 04:21:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-16 04:21:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:21:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:21:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-12-16 04:21:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-12-16 04:21:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:21:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:21:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:21:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:21:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-16 04:21:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-16 04:21:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:21:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:21:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_download_firmware [2021-12-16 04:21:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_download_firmware [2021-12-16 04:21:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 04:21:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 04:21:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:21:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:21:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-12-16 04:21:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-12-16 04:21:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:21:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:21:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_usb_talk [2021-12-16 04:21:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_usb_talk [2021-12-16 04:21:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 04:21:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 04:21:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 04:21:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 04:21:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-16 04:21:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-16 04:21:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:21:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:21:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_streaming_ctrl [2021-12-16 04:21:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_streaming_ctrl [2021-12-16 04:21:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-16 04:21:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-16 04:21:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:21:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:21:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:21:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i2c_mutex_of_dvb_usb_device [2021-12-16 04:21:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i2c_mutex_of_dvb_usb_device [2021-12-16 04:21:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-16 04:21:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-16 04:21:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:21:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:21:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2021-12-16 04:21:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2021-12-16 04:21:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 04:21:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 04:21:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:21:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:21:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:21:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:21:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:21:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_i2c_xfer [2021-12-16 04:21:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_i2c_xfer [2021-12-16 04:21:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_identify_state [2021-12-16 04:21:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_identify_state [2021-12-16 04:21:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-16 04:21:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-16 04:21:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-12-16 04:21:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-12-16 04:21:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:21:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-16 04:21:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-16 04:21:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:21:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 04:21:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 04:21:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:21:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure lme_firmware_switch [2021-12-16 04:21:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure lme_firmware_switch [2021-12-16 04:21:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-16 04:21:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-16 04:21:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure lme_coldreset [2021-12-16 04:21:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure lme_coldreset [2021-12-16 04:21:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure lme2510_powerup [2021-12-16 04:21:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure lme2510_powerup [2021-12-16 04:21:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-16 04:21:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-16 04:21:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:21:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:21:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:21:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_probe [2021-12-16 04:21:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_probe [2021-12-16 04:21:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-16 04:21:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-16 04:21:09,644 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:21:09,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:21:09,931 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:21:13,513 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:21:13,528 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:21:13,528 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 04:21:13,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:21:13 BoogieIcfgContainer [2021-12-16 04:21:13,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:21:13,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:21:13,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:21:13,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:21:13,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:21:06" (1/3) ... [2021-12-16 04:21:13,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fbefbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:21:13, skipping insertion in model container [2021-12-16 04:21:13,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:08" (2/3) ... [2021-12-16 04:21:13,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60fbefbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:21:13, skipping insertion in model container [2021-12-16 04:21:13,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:21:13" (3/3) ... [2021-12-16 04:21:13,539 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 [2021-12-16 04:21:13,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:21:13,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:21:13,588 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:21:13,598 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 04:21:13,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:21:13,632 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) [2021-12-16 04:21:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-16 04:21:13,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:13,644 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] [2021-12-16 04:21:13,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1846445218, now seen corresponding path program 1 times [2021-12-16 04:21:13,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:13,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596510351] [2021-12-16 04:21:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:13,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-16 04:21:14,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:14,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596510351] [2021-12-16 04:21:14,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596510351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:14,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:14,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:21:14,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379916821] [2021-12-16 04:21:14,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:14,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:21:14,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:21:14,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:21:14,682 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) [2021-12-16 04:21:17,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:19,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:20,420 INFO L93 Difference]: Finished difference Result 1543 states and 2311 transitions. [2021-12-16 04:21:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:21:20,422 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 [2021-12-16 04:21:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:20,442 INFO L225 Difference]: With dead ends: 1543 [2021-12-16 04:21:20,447 INFO L226 Difference]: Without dead ends: 804 [2021-12-16 04:21:20,456 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 [2021-12-16 04:21:20,463 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 249 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 340 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:20,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2175 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 571 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-12-16 04:21:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-12-16 04:21:20,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 718. [2021-12-16 04:21:20,571 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) [2021-12-16 04:21:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1011 transitions. [2021-12-16 04:21:20,578 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1011 transitions. Word has length 180 [2021-12-16 04:21:20,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:20,578 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1011 transitions. [2021-12-16 04:21:20,579 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) [2021-12-16 04:21:20,579 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1011 transitions. [2021-12-16 04:21:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-16 04:21:20,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:20,589 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] [2021-12-16 04:21:20,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:21:20,590 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash -213408590, now seen corresponding path program 1 times [2021-12-16 04:21:20,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:20,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043849186] [2021-12-16 04:21:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:20,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-16 04:21:21,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043849186] [2021-12-16 04:21:21,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043849186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:21,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:21,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:21,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048401437] [2021-12-16 04:21:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:21,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:21,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:21,272 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) [2021-12-16 04:21:24,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:26,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:29,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:31,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:32,478 INFO L93 Difference]: Finished difference Result 2242 states and 3235 transitions. [2021-12-16 04:21:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:32,479 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 [2021-12-16 04:21:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:32,487 INFO L225 Difference]: With dead ends: 2242 [2021-12-16 04:21:32,487 INFO L226 Difference]: Without dead ends: 1558 [2021-12-16 04:21:32,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-16 04:21:32,490 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 1426 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 698 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:32,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 3723 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1289 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2021-12-16 04:21:32,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-12-16 04:21:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1368. [2021-12-16 04:21:32,541 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) [2021-12-16 04:21:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1931 transitions. [2021-12-16 04:21:32,549 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1931 transitions. Word has length 180 [2021-12-16 04:21:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1931 transitions. [2021-12-16 04:21:32,551 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) [2021-12-16 04:21:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1931 transitions. [2021-12-16 04:21:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-16 04:21:32,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:32,554 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] [2021-12-16 04:21:32,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:21:32,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1424102539, now seen corresponding path program 1 times [2021-12-16 04:21:32,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:32,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770343437] [2021-12-16 04:21:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:32,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:32,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-16 04:21:33,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:33,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770343437] [2021-12-16 04:21:33,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770343437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:33,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:33,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:33,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105983737] [2021-12-16 04:21:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:33,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:33,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:33,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:33,153 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) [2021-12-16 04:21:35,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:37,212 INFO L93 Difference]: Finished difference Result 4322 states and 6256 transitions. [2021-12-16 04:21:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:37,213 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 [2021-12-16 04:21:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:37,228 INFO L225 Difference]: With dead ends: 4322 [2021-12-16 04:21:37,229 INFO L226 Difference]: Without dead ends: 2988 [2021-12-16 04:21:37,235 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 [2021-12-16 04:21:37,236 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 1656 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1028 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:37,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 2654 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1028 Valid, 611 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-16 04:21:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-12-16 04:21:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2652. [2021-12-16 04:21:37,322 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) [2021-12-16 04:21:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3744 transitions. [2021-12-16 04:21:37,335 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3744 transitions. Word has length 180 [2021-12-16 04:21:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:37,335 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3744 transitions. [2021-12-16 04:21:37,336 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) [2021-12-16 04:21:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3744 transitions. [2021-12-16 04:21:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-16 04:21:37,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:37,337 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] [2021-12-16 04:21:37,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:21:37,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2042366166, now seen corresponding path program 1 times [2021-12-16 04:21:37,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:37,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439412656] [2021-12-16 04:21:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:37,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-16 04:21:37,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439412656] [2021-12-16 04:21:37,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439412656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:37,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:37,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:37,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907168264] [2021-12-16 04:21:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:37,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:37,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:37,828 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) [2021-12-16 04:21:41,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:41,906 INFO L93 Difference]: Finished difference Result 6788 states and 9675 transitions. [2021-12-16 04:21:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:41,907 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 [2021-12-16 04:21:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:41,925 INFO L225 Difference]: With dead ends: 6788 [2021-12-16 04:21:41,925 INFO L226 Difference]: Without dead ends: 4170 [2021-12-16 04:21:41,933 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 [2021-12-16 04:21:41,934 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 812 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 506 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:41,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3076 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-16 04:21:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-12-16 04:21:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3560. [2021-12-16 04:21:42,088 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) [2021-12-16 04:21:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4944 transitions. [2021-12-16 04:21:42,105 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4944 transitions. Word has length 183 [2021-12-16 04:21:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:42,106 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 4944 transitions. [2021-12-16 04:21:42,106 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) [2021-12-16 04:21:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4944 transitions. [2021-12-16 04:21:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-16 04:21:42,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:42,109 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] [2021-12-16 04:21:42,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:21:42,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1410128186, now seen corresponding path program 1 times [2021-12-16 04:21:42,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:42,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684490349] [2021-12-16 04:21:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:42,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-16 04:21:42,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684490349] [2021-12-16 04:21:42,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684490349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:42,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:42,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:42,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732404057] [2021-12-16 04:21:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:42,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:42,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:42,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:42,571 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) [2021-12-16 04:21:45,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:46,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:48,220 INFO L93 Difference]: Finished difference Result 10980 states and 15599 transitions. [2021-12-16 04:21:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:48,220 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 [2021-12-16 04:21:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:48,253 INFO L225 Difference]: With dead ends: 10980 [2021-12-16 04:21:48,253 INFO L226 Difference]: Without dead ends: 7464 [2021-12-16 04:21:48,264 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 [2021-12-16 04:21:48,265 INFO L933 BasicCegarLoop]: 1797 mSDtfsCounter, 1327 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 673 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:48,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 3732 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-12-16 04:21:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2021-12-16 04:21:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 6424. [2021-12-16 04:21:48,437 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) [2021-12-16 04:21:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 8924 transitions. [2021-12-16 04:21:48,457 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 8924 transitions. Word has length 187 [2021-12-16 04:21:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:48,458 INFO L470 AbstractCegarLoop]: Abstraction has 6424 states and 8924 transitions. [2021-12-16 04:21:48,458 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) [2021-12-16 04:21:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 8924 transitions. [2021-12-16 04:21:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-16 04:21:48,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:48,460 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] [2021-12-16 04:21:48,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 04:21:48,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash 660623640, now seen corresponding path program 1 times [2021-12-16 04:21:48,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:48,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658392903] [2021-12-16 04:21:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:48,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 04:21:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-16 04:21:49,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:49,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658392903] [2021-12-16 04:21:49,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658392903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:49,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:49,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61878096] [2021-12-16 04:21:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:49,081 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) [2021-12-16 04:21:51,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:53,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:55,068 INFO L93 Difference]: Finished difference Result 8558 states and 12062 transitions. [2021-12-16 04:21:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:55,072 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 [2021-12-16 04:21:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:55,129 INFO L225 Difference]: With dead ends: 8558 [2021-12-16 04:21:55,130 INFO L226 Difference]: Without dead ends: 8554 [2021-12-16 04:21:55,135 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 [2021-12-16 04:21:55,136 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 1248 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 493 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:55,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 2295 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-12-16 04:21:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8554 states. [2021-12-16 04:21:55,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8554 to 7124. [2021-12-16 04:21:55,515 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) [2021-12-16 04:21:55,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 9720 transitions. [2021-12-16 04:21:55,550 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 9720 transitions. Word has length 200 [2021-12-16 04:21:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:55,553 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 9720 transitions. [2021-12-16 04:21:55,554 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) [2021-12-16 04:21:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 9720 transitions. [2021-12-16 04:21:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-16 04:21:55,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:55,556 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] [2021-12-16 04:21:55,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 04:21:55,556 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash -995686152, now seen corresponding path program 1 times [2021-12-16 04:21:55,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:55,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325254636] [2021-12-16 04:21:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:55,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:55,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:21:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:21:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:21:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:21:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:21:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:21:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:21:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 04:21:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-16 04:21:56,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:56,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325254636] [2021-12-16 04:21:56,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325254636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:56,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:56,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:56,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139637141] [2021-12-16 04:21:56,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:56,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:56,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:56,251 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) [2021-12-16 04:21:58,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:59,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:22:00,909 INFO L93 Difference]: Finished difference Result 8551 states and 12041 transitions. [2021-12-16 04:22:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:22:00,910 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 [2021-12-16 04:22:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:22:00,935 INFO L225 Difference]: With dead ends: 8551 [2021-12-16 04:22:00,935 INFO L226 Difference]: Without dead ends: 8548 [2021-12-16 04:22:00,940 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 [2021-12-16 04:22:00,940 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 1156 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 395 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-16 04:22:00,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2121 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 582 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-12-16 04:22:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8548 states. [2021-12-16 04:22:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8548 to 7123. [2021-12-16 04:22:01,134 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) [2021-12-16 04:22:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 9718 transitions. [2021-12-16 04:22:01,155 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 9718 transitions. Word has length 201 [2021-12-16 04:22:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:22:01,156 INFO L470 AbstractCegarLoop]: Abstraction has 7123 states and 9718 transitions. [2021-12-16 04:22:01,156 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) [2021-12-16 04:22:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 9718 transitions. [2021-12-16 04:22:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-16 04:22:01,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:22:01,157 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] [2021-12-16 04:22:01,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 04:22:01,158 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:22:01,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:22:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -801677285, now seen corresponding path program 1 times [2021-12-16 04:22:01,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:22:01,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287641637] [2021-12-16 04:22:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:22:01,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:22:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:22:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:22:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:22:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:22:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:22:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:22:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:22:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:22:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:22:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:22:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:22:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:22:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:22:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 04:22:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-16 04:22:01,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:22:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287641637] [2021-12-16 04:22:01,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287641637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:22:01,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:22:01,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:22:01,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462222353] [2021-12-16 04:22:01,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:22:01,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:22:01,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:22:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:22:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:22:01,747 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) [2021-12-16 04:22:04,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:06,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:22:07,501 INFO L93 Difference]: Finished difference Result 8550 states and 12039 transitions. [2021-12-16 04:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:22:07,502 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 [2021-12-16 04:22:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:22:07,528 INFO L225 Difference]: With dead ends: 8550 [2021-12-16 04:22:07,528 INFO L226 Difference]: Without dead ends: 8547 [2021-12-16 04:22:07,533 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 [2021-12-16 04:22:07,534 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 1153 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 396 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-16 04:22:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2115 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 579 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-12-16 04:22:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2021-12-16 04:22:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 7122. [2021-12-16 04:22:07,771 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) [2021-12-16 04:22:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 9716 transitions. [2021-12-16 04:22:07,787 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 9716 transitions. Word has length 202 [2021-12-16 04:22:07,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:22:07,788 INFO L470 AbstractCegarLoop]: Abstraction has 7122 states and 9716 transitions. [2021-12-16 04:22:07,788 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) [2021-12-16 04:22:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 9716 transitions. [2021-12-16 04:22:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-16 04:22:07,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:22:07,790 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] [2021-12-16 04:22:07,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 04:22:07,791 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:22:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:22:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 917635163, now seen corresponding path program 1 times [2021-12-16 04:22:07,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:22:07,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135571847] [2021-12-16 04:22:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:22:07,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:22:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:22:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:22:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:22:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:22:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:22:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:22:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 04:22:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 04:22:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:22:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:22:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:22:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:22:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 04:22:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 04:22:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-16 04:22:08,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:22:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135571847] [2021-12-16 04:22:08,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135571847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:22:08,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:22:08,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:22:08,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434794586] [2021-12-16 04:22:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:22:08,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:22:08,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:22:08,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:22:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:22:08,309 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) [2021-12-16 04:22:10,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []