./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-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-43_2a-drivers--usb--storage--uas.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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:54:14,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:54:14,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:54:14,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:54:14,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:54:14,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:54:14,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:54:14,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:54:14,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:54:14,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:54:14,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:54:14,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:54:14,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:54:14,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:54:14,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:54:14,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:54:14,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:54:14,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:54:14,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:54:14,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:54:14,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:54:14,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:54:14,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:54:14,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:54:14,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:54:14,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:54:14,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:54:14,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:54:14,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:54:14,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:54:14,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:54:14,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:54:14,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:54:14,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:54:14,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:54:14,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:54:14,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:54:14,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:54:14,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:54:14,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:54:14,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:54:14,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:54:14,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:54:14,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:54:14,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:54:14,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:54:14,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:54:14,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:54:14,494 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:54:14,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:54:14,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:54:14,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:54:14,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:54:14,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:54:14,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:54:14,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:54:14,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:54:14,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:54:14,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:54:14,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:54:14,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:54:14,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:54:14,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:54:14,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:54:14,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:54:14,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:54:14,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:54:14,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:54:14,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:54:14,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:54:14,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:54:14,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2021-11-04 08:54:14,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:54:14,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:54:14,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:54:14,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:54:14,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:54:14,681 INFO L432 ainManager$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-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-04 08:54:14,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e437482d9/01bf693eeaeb47adac4b1f661c1da07b/FLAG305b8b5ea [2021-11-04 08:54:15,349 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:54:15,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-04 08:54:15,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e437482d9/01bf693eeaeb47adac4b1f661c1da07b/FLAG305b8b5ea [2021-11-04 08:54:15,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e437482d9/01bf693eeaeb47adac4b1f661c1da07b [2021-11-04 08:54:15,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:54:15,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:54:15,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:54:15,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:54:15,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:54:15,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:54:15" (1/1) ... [2021-11-04 08:54:15,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71402e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:15, skipping insertion in model container [2021-11-04 08:54:15,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:54:15" (1/1) ... [2021-11-04 08:54:15,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:54:15,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:54:16,883 WARN L228 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-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-11-04 08:54:16,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:54:16,952 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:54:17,167 WARN L228 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-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-11-04 08:54:17,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:54:17,241 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:54:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17 WrapperNode [2021-11-04 08:54:17,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:54:17,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:54:17,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:54:17,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:54:17,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:17,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:17,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:54:17,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:54:17,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:54:17,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:54:17,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:17,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:17,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:17,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:18,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:18,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:18,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:18,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:54:18,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:54:18,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:54:18,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:54:18,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (1/1) ... [2021-11-04 08:54:18,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:54:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:54:18,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 08:54:18,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 08:54:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-11-04 08:54:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-11-04 08:54:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:54:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-11-04 08:54:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:54:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-11-04 08:54:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-11-04 08:54:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:54:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:54:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-11-04 08:54:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-11-04 08:54:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:54:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-11-04 08:54:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-11-04 08:54:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:54:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:54:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 08:54:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 08:54:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:54:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:54:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:54:22,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:54:22,251 INFO L299 CfgBuilder]: Removed 3060 assume(true) statements. [2021-11-04 08:54:22,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:54:22 BoogieIcfgContainer [2021-11-04 08:54:22,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:54:22,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:54:22,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:54:22,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:54:22,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:54:15" (1/3) ... [2021-11-04 08:54:22,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfdaafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:54:22, skipping insertion in model container [2021-11-04 08:54:22,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:17" (2/3) ... [2021-11-04 08:54:22,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfdaafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:54:22, skipping insertion in model container [2021-11-04 08:54:22,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:54:22" (3/3) ... [2021-11-04 08:54:22,265 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-04 08:54:22,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:54:22,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 120 error locations. [2021-11-04 08:54:22,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:54:22,325 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 08:54:22,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 120 error locations. [2021-11-04 08:54:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 4528 states, 4387 states have (on average 1.4424435833143379) internal successors, (6328), 4510 states have internal predecessors, (6328), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-04 08:54:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-04 08:54:22,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:54:22,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:54:22,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:54:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:54:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1622129590, now seen corresponding path program 1 times [2021-11-04 08:54:22,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:54:22,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644696357] [2021-11-04 08:54:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:54:22,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:54:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:54:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:54:22,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:54:22,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644696357] [2021-11-04 08:54:22,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644696357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:54:22,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:54:22,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:54:22,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284179618] [2021-11-04 08:54:22,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:54:22,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:54:22,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:54:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:54:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:54:22,884 INFO L87 Difference]: Start difference. First operand has 4528 states, 4387 states have (on average 1.4424435833143379) internal successors, (6328), 4510 states have internal predecessors, (6328), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:54:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:54:32,133 INFO L93 Difference]: Finished difference Result 9052 states and 12721 transitions. [2021-11-04 08:54:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:54:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-04 08:54:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:54:32,173 INFO L225 Difference]: With dead ends: 9052 [2021-11-04 08:54:32,173 INFO L226 Difference]: Without dead ends: 4517 [2021-11-04 08:54:32,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:54:32,193 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7732.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 6115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8933.57ms IncrementalHoareTripleChecker+Time [2021-11-04 08:54:32,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 6115 Unknown, 0 Unchecked, 13.88ms Time], IncrementalHoareTripleChecker [0 Valid, 6115 Invalid, 0 Unknown, 0 Unchecked, 8933.57ms Time] [2021-11-04 08:54:32,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2021-11-04 08:54:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4517. [2021-11-04 08:54:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4377 states have (on average 1.394334018734293) internal successors, (6103), 4499 states have internal predecessors, (6103), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-04 08:54:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6131 transitions. [2021-11-04 08:54:32,346 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6131 transitions. Word has length 40 [2021-11-04 08:54:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:54:32,347 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 6131 transitions. [2021-11-04 08:54:32,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:54:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6131 transitions. [2021-11-04 08:54:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-04 08:54:32,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:54:32,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:54:32,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:54:32,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:54:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:54:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash 423605326, now seen corresponding path program 1 times [2021-11-04 08:54:32,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:54:32,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761480988] [2021-11-04 08:54:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:54:32,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:54:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:54:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:54:32,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:54:32,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761480988] [2021-11-04 08:54:32,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761480988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:54:32,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:54:32,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:54:32,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665784551] [2021-11-04 08:54:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:54:32,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:54:32,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:54:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:54:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:54:32,584 INFO L87 Difference]: Start difference. First operand 4517 states and 6131 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:54:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:54:47,464 INFO L93 Difference]: Finished difference Result 9019 states and 12247 transitions. [2021-11-04 08:54:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:54:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-04 08:54:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:54:47,484 INFO L225 Difference]: With dead ends: 9019 [2021-11-04 08:54:47,486 INFO L226 Difference]: Without dead ends: 4518 [2021-11-04 08:54:47,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:54:47,500 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 6116 mSDsCounter, 0 mSdLazyCounter, 12205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12767.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14498.63ms IncrementalHoareTripleChecker+Time [2021-11-04 08:54:47,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 12205 Unknown, 0 Unchecked, 32.36ms Time], IncrementalHoareTripleChecker [0 Valid, 12205 Invalid, 0 Unknown, 0 Unchecked, 14498.63ms Time] [2021-11-04 08:54:47,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2021-11-04 08:54:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2021-11-04 08:54:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4378 states have (on average 1.394243947007766) internal successors, (6104), 4500 states have internal predecessors, (6104), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-04 08:54:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6132 transitions. [2021-11-04 08:54:47,596 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6132 transitions. Word has length 40 [2021-11-04 08:54:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:54:47,597 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 6132 transitions. [2021-11-04 08:54:47,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:54:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6132 transitions. [2021-11-04 08:54:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-04 08:54:47,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:54:47,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:54:47,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:54:47,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:54:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:54:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1942291979, now seen corresponding path program 1 times [2021-11-04 08:54:47,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:54:47,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582617419] [2021-11-04 08:54:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:54:47,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:54:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:54:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:54:47,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:54:47,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582617419] [2021-11-04 08:54:47,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582617419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:54:47,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095518192] [2021-11-04 08:54:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:54:47,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:54:47,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:54:47,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:54:47,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 08:54:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:54:48,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 08:54:48,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:54:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:54:48,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 08:54:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:54:48,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095518192] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 08:54:48,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 08:54:48,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 08:54:48,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55891029] [2021-11-04 08:54:48,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 08:54:48,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 08:54:48,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:54:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 08:54:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:54:48,932 INFO L87 Difference]: Start difference. First operand 4518 states and 6132 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:54:50,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:55:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:55:14,756 INFO L93 Difference]: Finished difference Result 9038 states and 12284 transitions. [2021-11-04 08:55:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 08:55:14,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-04 08:55:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:55:14,783 INFO L225 Difference]: With dead ends: 9038 [2021-11-04 08:55:14,783 INFO L226 Difference]: Without dead ends: 4537 [2021-11-04 08:55:14,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.90ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:55:14,794 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 18348 mSDsCounter, 0 mSdLazyCounter, 24411 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22833.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 24451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.62ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 24411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25422.30ms IncrementalHoareTripleChecker+Time [2021-11-04 08:55:14,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 24451 Unknown, 0 Unchecked, 46.62ms Time], IncrementalHoareTripleChecker [40 Valid, 24411 Invalid, 0 Unknown, 0 Unchecked, 25422.30ms Time] [2021-11-04 08:55:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2021-11-04 08:55:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 4537. [2021-11-04 08:55:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4397 states have (on average 1.3925403684330224) internal successors, (6123), 4519 states have internal predecessors, (6123), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-04 08:55:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6151 transitions. [2021-11-04 08:55:14,892 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6151 transitions. Word has length 41 [2021-11-04 08:55:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:55:14,893 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6151 transitions. [2021-11-04 08:55:14,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:55:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6151 transitions. [2021-11-04 08:55:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 08:55:14,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:55:14,894 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:55:14,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 08:55:15,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:55:15,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:55:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:55:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 954514318, now seen corresponding path program 2 times [2021-11-04 08:55:15,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:55:15,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992929464] [2021-11-04 08:55:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:55:15,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:55:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:55:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:55:15,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:55:15,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992929464] [2021-11-04 08:55:15,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992929464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:55:15,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:55:15,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:55:15,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194107899] [2021-11-04 08:55:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:55:15,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:55:15,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:55:15,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:55:15,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:55:15,372 INFO L87 Difference]: Start difference. First operand 4537 states and 6151 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:55:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:55:33,427 INFO L93 Difference]: Finished difference Result 12895 states and 17525 transitions. [2021-11-04 08:55:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:55:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 08:55:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:55:33,459 INFO L225 Difference]: With dead ends: 12895 [2021-11-04 08:55:33,459 INFO L226 Difference]: Without dead ends: 8381 [2021-11-04 08:55:33,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:55:33,476 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5193 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15502.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.99ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17708.71ms IncrementalHoareTripleChecker+Time [2021-11-04 08:55:33,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5193 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 26.99ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 17708.71ms Time] [2021-11-04 08:55:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8381 states. [2021-11-04 08:55:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8381 to 8181. [2021-11-04 08:55:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8181 states, 8021 states have (on average 1.396459294352325) internal successors, (11201), 8146 states have internal predecessors, (11201), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (42), 24 states have call predecessors, (42), 28 states have call successors, (42) [2021-11-04 08:55:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 11271 transitions. [2021-11-04 08:55:33,748 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 11271 transitions. Word has length 44 [2021-11-04 08:55:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:55:33,749 INFO L470 AbstractCegarLoop]: Abstraction has 8181 states and 11271 transitions. [2021-11-04 08:55:33,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:55:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 11271 transitions. [2021-11-04 08:55:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-04 08:55:33,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:55:33,751 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:55:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:55:33,752 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:55:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:55:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash 194607113, now seen corresponding path program 1 times [2021-11-04 08:55:33,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:55:33,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566693185] [2021-11-04 08:55:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:55:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:55:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:55:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:55:33,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:55:33,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566693185] [2021-11-04 08:55:33,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566693185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:55:33,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:55:33,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:55:33,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803846313] [2021-11-04 08:55:33,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:55:33,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:55:33,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:55:33,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:55:33,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:55:33,942 INFO L87 Difference]: Start difference. First operand 8181 states and 11271 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:55:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:55:50,595 INFO L93 Difference]: Finished difference Result 19687 states and 27101 transitions. [2021-11-04 08:55:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:55:50,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-04 08:55:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:55:50,642 INFO L225 Difference]: With dead ends: 19687 [2021-11-04 08:55:50,642 INFO L226 Difference]: Without dead ends: 11529 [2021-11-04 08:55:50,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:55:50,664 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5252 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14210.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5252 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.25ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16299.08ms IncrementalHoareTripleChecker+Time [2021-11-04 08:55:50,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5252 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 20.25ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 16299.08ms Time] [2021-11-04 08:55:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11529 states. [2021-11-04 08:55:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11529 to 11329. [2021-11-04 08:55:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11329 states, 11149 states have (on average 1.396537806081263) internal successors, (15570), 11277 states have internal predecessors, (15570), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (84), 36 states have call predecessors, (84), 42 states have call successors, (84) [2021-11-04 08:55:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11329 states to 11329 states and 15696 transitions. [2021-11-04 08:55:51,019 INFO L78 Accepts]: Start accepts. Automaton has 11329 states and 15696 transitions. Word has length 45 [2021-11-04 08:55:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:55:51,020 INFO L470 AbstractCegarLoop]: Abstraction has 11329 states and 15696 transitions. [2021-11-04 08:55:51,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:55:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11329 states and 15696 transitions. [2021-11-04 08:55:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 08:55:51,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:55:51,022 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:55:51,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 08:55:51,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:55:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:55:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1887678770, now seen corresponding path program 1 times [2021-11-04 08:55:51,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:55:51,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838387427] [2021-11-04 08:55:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:55:51,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:55:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:55:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:55:51,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:55:51,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838387427] [2021-11-04 08:55:51,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838387427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:55:51,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:55:51,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:55:51,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328765084] [2021-11-04 08:55:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:55:51,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:55:51,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:55:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:55:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:55:51,167 INFO L87 Difference]: Start difference. First operand 11329 states and 15696 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:56:07,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:56:07,348 INFO L93 Difference]: Finished difference Result 25437 states and 35249 transitions. [2021-11-04 08:56:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:56:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-04 08:56:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:56:07,389 INFO L225 Difference]: With dead ends: 25437 [2021-11-04 08:56:07,389 INFO L226 Difference]: Without dead ends: 14131 [2021-11-04 08:56:07,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:07,418 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5271 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13778.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5271 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.91ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15822.70ms IncrementalHoareTripleChecker+Time [2021-11-04 08:56:07,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5271 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 18.91ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 15822.70ms Time] [2021-11-04 08:56:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14131 states. [2021-11-04 08:56:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14131 to 13931. [2021-11-04 08:56:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13931 states, 13731 states have (on average 1.3966936129924987) internal successors, (19178), 13862 states have internal predecessors, (19178), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (140), 48 states have call predecessors, (140), 56 states have call successors, (140) [2021-11-04 08:56:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 19374 transitions. [2021-11-04 08:56:07,780 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 19374 transitions. Word has length 46 [2021-11-04 08:56:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:56:07,780 INFO L470 AbstractCegarLoop]: Abstraction has 13931 states and 19374 transitions. [2021-11-04 08:56:07,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:56:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 19374 transitions. [2021-11-04 08:56:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-04 08:56:07,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:56:07,782 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:56:07,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 08:56:07,783 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:56:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:56:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2014030711, now seen corresponding path program 1 times [2021-11-04 08:56:07,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:56:07,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139773932] [2021-11-04 08:56:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:56:07,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:56:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:56:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:56:07,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:56:07,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139773932] [2021-11-04 08:56:07,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139773932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:56:07,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:56:07,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:56:07,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320255406] [2021-11-04 08:56:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:56:07,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:56:07,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:56:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:56:07,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:07,929 INFO L87 Difference]: Start difference. First operand 13931 states and 19374 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:56:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:56:24,175 INFO L93 Difference]: Finished difference Result 30093 states and 41913 transitions. [2021-11-04 08:56:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:56:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-04 08:56:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:56:24,209 INFO L225 Difference]: With dead ends: 30093 [2021-11-04 08:56:24,210 INFO L226 Difference]: Without dead ends: 16185 [2021-11-04 08:56:24,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:24,242 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5290 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 12186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13739.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.40ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15803.55ms IncrementalHoareTripleChecker+Time [2021-11-04 08:56:24,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 84 Invalid, 12199 Unknown, 0 Unchecked, 19.40ms Time], IncrementalHoareTripleChecker [13 Valid, 12186 Invalid, 0 Unknown, 0 Unchecked, 15803.55ms Time] [2021-11-04 08:56:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2021-11-04 08:56:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 15985. [2021-11-04 08:56:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15985 states, 15765 states have (on average 1.3968284173802727) internal successors, (22021), 15899 states have internal predecessors, (22021), 70 states have call successors, (70), 30 states have call predecessors, (70), 30 states have return successors, (210), 60 states have call predecessors, (210), 70 states have call successors, (210) [2021-11-04 08:56:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15985 states to 15985 states and 22301 transitions. [2021-11-04 08:56:24,594 INFO L78 Accepts]: Start accepts. Automaton has 15985 states and 22301 transitions. Word has length 47 [2021-11-04 08:56:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:56:24,596 INFO L470 AbstractCegarLoop]: Abstraction has 15985 states and 22301 transitions. [2021-11-04 08:56:24,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:56:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 15985 states and 22301 transitions. [2021-11-04 08:56:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-04 08:56:24,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:56:24,598 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:56:24,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 08:56:24,599 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:56:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:56:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash 683636514, now seen corresponding path program 1 times [2021-11-04 08:56:24,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:56:24,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135820154] [2021-11-04 08:56:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:56:24,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:56:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:56:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:56:24,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:56:24,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135820154] [2021-11-04 08:56:24,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135820154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:56:24,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:56:24,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:56:24,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273608572] [2021-11-04 08:56:24,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:56:24,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:56:24,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:56:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:56:24,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:24,734 INFO L87 Difference]: Start difference. First operand 15985 states and 22301 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:56:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:56:45,792 INFO L93 Difference]: Finished difference Result 45694 states and 63920 transitions. [2021-11-04 08:56:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:56:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-04 08:56:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:56:45,857 INFO L225 Difference]: With dead ends: 45694 [2021-11-04 08:56:45,858 INFO L226 Difference]: Without dead ends: 29732 [2021-11-04 08:56:45,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:45,897 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 5529 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 17065 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17887.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 17069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.21ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20444.11ms IncrementalHoareTripleChecker+Time [2021-11-04 08:56:45,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 81 Invalid, 17069 Unknown, 0 Unchecked, 24.21ms Time], IncrementalHoareTripleChecker [4 Valid, 17065 Invalid, 0 Unknown, 0 Unchecked, 20444.11ms Time] [2021-11-04 08:56:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2021-11-04 08:56:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 23342. [2021-11-04 08:56:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23342 states, 23122 states have (on average 1.396635239166162) internal successors, (32293), 23256 states have internal predecessors, (32293), 70 states have call successors, (70), 30 states have call predecessors, (70), 30 states have return successors, (210), 60 states have call predecessors, (210), 70 states have call successors, (210) [2021-11-04 08:56:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23342 states to 23342 states and 32573 transitions. [2021-11-04 08:56:46,392 INFO L78 Accepts]: Start accepts. Automaton has 23342 states and 32573 transitions. Word has length 61 [2021-11-04 08:56:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:56:46,392 INFO L470 AbstractCegarLoop]: Abstraction has 23342 states and 32573 transitions. [2021-11-04 08:56:46,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:56:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 23342 states and 32573 transitions. [2021-11-04 08:56:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-04 08:56:46,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:56:46,397 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:56:46,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 08:56:46,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:56:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:56:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1845981959, now seen corresponding path program 1 times [2021-11-04 08:56:46,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:56:46,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859847900] [2021-11-04 08:56:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:56:46,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:56:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:56:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:56:46,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:56:46,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859847900] [2021-11-04 08:56:46,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859847900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:56:46,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:56:46,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:56:46,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023290055] [2021-11-04 08:56:46,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:56:46,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:56:46,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:56:46,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:56:46,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:46,514 INFO L87 Difference]: Start difference. First operand 23342 states and 32573 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:57:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:57:05,801 INFO L93 Difference]: Finished difference Result 60958 states and 85229 transitions. [2021-11-04 08:57:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:57:05,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-04 08:57:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:57:05,862 INFO L225 Difference]: With dead ends: 60958 [2021-11-04 08:57:05,863 INFO L226 Difference]: Without dead ends: 37639 [2021-11-04 08:57:05,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:57:05,889 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 4050 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 16150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16217.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 16152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18486.54ms IncrementalHoareTripleChecker+Time [2021-11-04 08:57:05,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4050 Valid, 80 Invalid, 16152 Unknown, 0 Unchecked, 21.06ms Time], IncrementalHoareTripleChecker [2 Valid, 16150 Invalid, 0 Unknown, 0 Unchecked, 18486.54ms Time] [2021-11-04 08:57:05,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37639 states. [2021-11-04 08:57:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37639 to 37469. [2021-11-04 08:57:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37469 states, 37159 states have (on average 1.4010064856427784) internal successors, (52060), 37308 states have internal predecessors, (52060), 130 states have call successors, (130), 60 states have call predecessors, (130), 60 states have return successors, (390), 110 states have call predecessors, (390), 130 states have call successors, (390) [2021-11-04 08:57:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37469 states to 37469 states and 52580 transitions. [2021-11-04 08:57:06,444 INFO L78 Accepts]: Start accepts. Automaton has 37469 states and 52580 transitions. Word has length 101 [2021-11-04 08:57:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:57:06,444 INFO L470 AbstractCegarLoop]: Abstraction has 37469 states and 52580 transitions. [2021-11-04 08:57:06,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:57:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 37469 states and 52580 transitions. [2021-11-04 08:57:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-04 08:57:06,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:57:06,455 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:57:06,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 08:57:06,455 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:57:06,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:57:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash 222843345, now seen corresponding path program 1 times [2021-11-04 08:57:06,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:57:06,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241962332] [2021-11-04 08:57:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:57:06,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:57:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:57:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:57:06,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:57:06,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241962332] [2021-11-04 08:57:06,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241962332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:57:06,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:57:06,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:57:06,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387032259] [2021-11-04 08:57:06,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:57:06,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:57:06,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:57:06,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:57:06,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:57:06,589 INFO L87 Difference]: Start difference. First operand 37469 states and 52580 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:57:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:57:41,633 INFO L93 Difference]: Finished difference Result 121417 states and 170248 transitions. [2021-11-04 08:57:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:57:41,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-04 08:57:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:57:41,809 INFO L225 Difference]: With dead ends: 121417 [2021-11-04 08:57:41,809 INFO L226 Difference]: Without dead ends: 83971 [2021-11-04 08:57:41,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:57:41,892 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 12234 mSDsluCounter, 16341 mSDsCounter, 0 mSdLazyCounter, 26458 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29766.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12239 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.81ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 26458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33622.85ms IncrementalHoareTripleChecker+Time [2021-11-04 08:57:41,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12239 Valid, 114 Invalid, 26473 Unknown, 0 Unchecked, 61.81ms Time], IncrementalHoareTripleChecker [15 Valid, 26458 Invalid, 0 Unknown, 0 Unchecked, 33622.85ms Time] [2021-11-04 08:57:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83971 states. [2021-11-04 08:57:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83971 to 37489. [2021-11-04 08:57:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37489 states, 37179 states have (on average 1.40079076898249) internal successors, (52080), 37328 states have internal predecessors, (52080), 130 states have call successors, (130), 60 states have call predecessors, (130), 60 states have return successors, (390), 110 states have call predecessors, (390), 130 states have call successors, (390) [2021-11-04 08:57:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37489 states to 37489 states and 52600 transitions. [2021-11-04 08:57:42,950 INFO L78 Accepts]: Start accepts. Automaton has 37489 states and 52600 transitions. Word has length 118 [2021-11-04 08:57:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:57:42,950 INFO L470 AbstractCegarLoop]: Abstraction has 37489 states and 52600 transitions. [2021-11-04 08:57:42,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:57:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 37489 states and 52600 transitions. [2021-11-04 08:57:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-04 08:57:42,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:57:42,954 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:57:42,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 08:57:42,954 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:57:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:57:42,954 INFO L85 PathProgramCache]: Analyzing trace with hash -550967083, now seen corresponding path program 1 times [2021-11-04 08:57:42,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:57:42,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684426136] [2021-11-04 08:57:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:57:42,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:57:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:57:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 08:57:43,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:57:43,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684426136] [2021-11-04 08:57:43,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684426136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:57:43,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:57:43,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:57:43,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761276022] [2021-11-04 08:57:43,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:57:43,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:57:43,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:57:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:57:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:57:43,072 INFO L87 Difference]: Start difference. First operand 37489 states and 52600 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:57:45,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:58:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:58:04,949 INFO L93 Difference]: Finished difference Result 89422 states and 125603 transitions. [2021-11-04 08:58:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:58:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-04 08:58:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:58:05,064 INFO L225 Difference]: With dead ends: 89422 [2021-11-04 08:58:05,065 INFO L226 Difference]: Without dead ends: 51956 [2021-11-04 08:58:05,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:58:05,121 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 4320 mSDsluCounter, 5819 mSDsCounter, 0 mSdLazyCounter, 15924 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18442.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.22ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 15924 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20795.04ms IncrementalHoareTripleChecker+Time [2021-11-04 08:58:05,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4320 Valid, 80 Invalid, 15939 Unknown, 0 Unchecked, 23.22ms Time], IncrementalHoareTripleChecker [14 Valid, 15924 Invalid, 1 Unknown, 0 Unchecked, 20795.04ms Time] [2021-11-04 08:58:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51956 states. [2021-11-04 08:58:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51956 to 51786. [2021-11-04 08:58:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51786 states, 51386 states have (on average 1.402658311602382) internal successors, (72077), 51550 states have internal predecessors, (72077), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 08:58:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51786 states to 51786 states and 72837 transitions. [2021-11-04 08:58:05,957 INFO L78 Accepts]: Start accepts. Automaton has 51786 states and 72837 transitions. Word has length 132 [2021-11-04 08:58:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:58:05,958 INFO L470 AbstractCegarLoop]: Abstraction has 51786 states and 72837 transitions. [2021-11-04 08:58:05,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:58:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 51786 states and 72837 transitions. [2021-11-04 08:58:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-04 08:58:05,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:58:05,962 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:58:05,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 08:58:05,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:58:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:58:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1977646117, now seen corresponding path program 1 times [2021-11-04 08:58:05,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:58:05,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792909325] [2021-11-04 08:58:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:58:05,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:58:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:58:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:58:06,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:58:06,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792909325] [2021-11-04 08:58:06,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792909325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:58:06,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:58:06,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:58:06,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197915244] [2021-11-04 08:58:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:58:06,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:58:06,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:58:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:58:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:58:06,090 INFO L87 Difference]: Start difference. First operand 51786 states and 72837 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:58:07,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:58:09,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:58:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:58:39,752 INFO L93 Difference]: Finished difference Result 167635 states and 235366 transitions. [2021-11-04 08:58:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 08:58:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-04 08:58:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:58:39,985 INFO L225 Difference]: With dead ends: 167635 [2021-11-04 08:58:39,985 INFO L226 Difference]: Without dead ends: 115872 [2021-11-04 08:58:40,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:58:40,062 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8565 mSDsluCounter, 12504 mSDsCounter, 0 mSdLazyCounter, 22489 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28070.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8570 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 22500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.35ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31579.95ms IncrementalHoareTripleChecker+Time [2021-11-04 08:58:40,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8570 Valid, 108 Invalid, 22500 Unknown, 0 Unchecked, 43.35ms Time], IncrementalHoareTripleChecker [11 Valid, 22489 Invalid, 0 Unknown, 0 Unchecked, 31579.95ms Time] [2021-11-04 08:58:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115872 states. [2021-11-04 08:58:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115872 to 51806. [2021-11-04 08:58:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51806 states, 51406 states have (on average 1.402501653503482) internal successors, (72097), 51570 states have internal predecessors, (72097), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 08:58:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51806 states to 51806 states and 72857 transitions. [2021-11-04 08:58:41,522 INFO L78 Accepts]: Start accepts. Automaton has 51806 states and 72857 transitions. Word has length 137 [2021-11-04 08:58:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:58:41,523 INFO L470 AbstractCegarLoop]: Abstraction has 51806 states and 72857 transitions. [2021-11-04 08:58:41,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:58:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 51806 states and 72857 transitions. [2021-11-04 08:58:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 08:58:41,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:58:41,527 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:58:41,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 08:58:41,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:58:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:58:41,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1797920898, now seen corresponding path program 1 times [2021-11-04 08:58:41,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:58:41,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926495430] [2021-11-04 08:58:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:58:41,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:58:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:58:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:58:41,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:58:41,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926495430] [2021-11-04 08:58:41,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926495430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:58:41,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:58:41,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:58:41,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163873159] [2021-11-04 08:58:41,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:58:41,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:58:41,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:58:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:58:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:58:41,661 INFO L87 Difference]: Start difference. First operand 51806 states and 72857 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:59:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:59:29,871 INFO L93 Difference]: Finished difference Result 198243 states and 278329 transitions. [2021-11-04 08:59:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:59:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 08:59:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:59:30,249 INFO L225 Difference]: With dead ends: 198243 [2021-11-04 08:59:30,250 INFO L226 Difference]: Without dead ends: 146460 [2021-11-04 08:59:30,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:59:30,326 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 12483 mSDsluCounter, 20395 mSDsCounter, 0 mSdLazyCounter, 34378 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39749.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12493 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 34390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.58ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44737.01ms IncrementalHoareTripleChecker+Time [2021-11-04 08:59:30,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12493 Valid, 133 Invalid, 34390 Unknown, 0 Unchecked, 74.58ms Time], IncrementalHoareTripleChecker [12 Valid, 34378 Invalid, 0 Unknown, 0 Unchecked, 44737.01ms Time] [2021-11-04 08:59:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146460 states. [2021-11-04 08:59:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146460 to 51826. [2021-11-04 08:59:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51826 states, 51426 states have (on average 1.4023451172558627) internal successors, (72117), 51590 states have internal predecessors, (72117), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 08:59:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51826 states to 51826 states and 72877 transitions. [2021-11-04 08:59:32,026 INFO L78 Accepts]: Start accepts. Automaton has 51826 states and 72877 transitions. Word has length 144 [2021-11-04 08:59:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:59:32,027 INFO L470 AbstractCegarLoop]: Abstraction has 51826 states and 72877 transitions. [2021-11-04 08:59:32,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:59:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 51826 states and 72877 transitions. [2021-11-04 08:59:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 08:59:32,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:59:32,036 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:59:32,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 08:59:32,036 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:59:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:59:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 419709500, now seen corresponding path program 1 times [2021-11-04 08:59:32,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:59:32,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573376375] [2021-11-04 08:59:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:59:32,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:59:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:59:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:59:32,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:59:32,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573376375] [2021-11-04 08:59:32,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573376375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:59:32,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:59:32,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:59:32,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803280683] [2021-11-04 08:59:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:59:32,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:59:32,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:59:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:59:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:59:32,163 INFO L87 Difference]: Start difference. First operand 51826 states and 72877 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:59:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:59:48,224 INFO L93 Difference]: Finished difference Result 103659 states and 145790 transitions. [2021-11-04 08:59:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:59:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 08:59:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:59:48,326 INFO L225 Difference]: With dead ends: 103659 [2021-11-04 08:59:48,326 INFO L226 Difference]: Without dead ends: 51856 [2021-11-04 08:59:48,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:59:48,390 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 6113 mSDsCounter, 0 mSdLazyCounter, 12203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13001.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.91ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14726.62ms IncrementalHoareTripleChecker+Time [2021-11-04 08:59:48,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 12207 Unknown, 0 Unchecked, 16.91ms Time], IncrementalHoareTripleChecker [4 Valid, 12203 Invalid, 0 Unknown, 0 Unchecked, 14726.62ms Time] [2021-11-04 08:59:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51856 states. [2021-11-04 08:59:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51856 to 51856. [2021-11-04 08:59:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51856 states, 51456 states have (on average 1.402110541044776) internal successors, (72147), 51620 states have internal predecessors, (72147), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 08:59:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51856 states to 51856 states and 72907 transitions. [2021-11-04 08:59:49,621 INFO L78 Accepts]: Start accepts. Automaton has 51856 states and 72907 transitions. Word has length 144 [2021-11-04 08:59:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:59:49,622 INFO L470 AbstractCegarLoop]: Abstraction has 51856 states and 72907 transitions. [2021-11-04 08:59:49,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:59:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 51856 states and 72907 transitions. [2021-11-04 08:59:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 08:59:49,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:59:49,626 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:59:49,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 08:59:49,626 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 08:59:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:59:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash 446775102, now seen corresponding path program 1 times [2021-11-04 08:59:49,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:59:49,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196652222] [2021-11-04 08:59:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:59:49,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:59:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:59:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:59:49,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:59:49,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196652222] [2021-11-04 08:59:49,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196652222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:59:49,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:59:49,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:59:49,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991377043] [2021-11-04 08:59:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:59:49,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:59:49,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:59:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:59:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:59:49,752 INFO L87 Difference]: Start difference. First operand 51856 states and 72907 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:59:52,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:00:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:00:14,166 INFO L93 Difference]: Finished difference Result 135117 states and 189873 transitions. [2021-11-04 09:00:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:00:14,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 09:00:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:00:14,349 INFO L225 Difference]: With dead ends: 135117 [2021-11-04 09:00:14,350 INFO L226 Difference]: Without dead ends: 83284 [2021-11-04 09:00:14,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:00:14,427 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 4196 mSDsluCounter, 6004 mSDsCounter, 0 mSdLazyCounter, 12182 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19599.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 12185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12182 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21958.76ms IncrementalHoareTripleChecker+Time [2021-11-04 09:00:14,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 61 Invalid, 12185 Unknown, 0 Unchecked, 26.40ms Time], IncrementalHoareTripleChecker [2 Valid, 12182 Invalid, 1 Unknown, 0 Unchecked, 21958.76ms Time] [2021-11-04 09:00:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83284 states. [2021-11-04 09:00:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83284 to 51886. [2021-11-04 09:00:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51886 states, 51486 states have (on average 1.401876238200676) internal successors, (72177), 51650 states have internal predecessors, (72177), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:00:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51886 states to 51886 states and 72937 transitions. [2021-11-04 09:00:16,068 INFO L78 Accepts]: Start accepts. Automaton has 51886 states and 72937 transitions. Word has length 144 [2021-11-04 09:00:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:00:16,068 INFO L470 AbstractCegarLoop]: Abstraction has 51886 states and 72937 transitions. [2021-11-04 09:00:16,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:00:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 51886 states and 72937 transitions. [2021-11-04 09:00:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 09:00:16,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:00:16,073 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:00:16,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 09:00:16,073 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:00:16,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:00:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 818994843, now seen corresponding path program 1 times [2021-11-04 09:00:16,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:00:16,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590913247] [2021-11-04 09:00:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:00:16,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:00:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:00:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:00:16,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:00:16,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590913247] [2021-11-04 09:00:16,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590913247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:00:16,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:00:16,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:00:16,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731397826] [2021-11-04 09:00:16,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:00:16,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:00:16,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:00:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:00:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:00:16,216 INFO L87 Difference]: Start difference. First operand 51886 states and 72937 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:00:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:00:39,525 INFO L93 Difference]: Finished difference Result 103839 states and 145970 transitions. [2021-11-04 09:00:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:00:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 09:00:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:00:39,633 INFO L225 Difference]: With dead ends: 103839 [2021-11-04 09:00:39,633 INFO L226 Difference]: Without dead ends: 51976 [2021-11-04 09:00:39,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:00:39,712 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 12223 mSDsCounter, 0 mSdLazyCounter, 18303 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19176.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.30ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21628.76ms IncrementalHoareTripleChecker+Time [2021-11-04 09:00:39,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 84 Invalid, 18312 Unknown, 0 Unchecked, 29.30ms Time], IncrementalHoareTripleChecker [9 Valid, 18303 Invalid, 0 Unknown, 0 Unchecked, 21628.76ms Time] [2021-11-04 09:00:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51976 states. [2021-11-04 09:00:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51976 to 51946. [2021-11-04 09:00:41,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51946 states, 51546 states have (on average 1.4014084507042253) internal successors, (72237), 51710 states have internal predecessors, (72237), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:00:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51946 states to 51946 states and 72997 transitions. [2021-11-04 09:00:41,133 INFO L78 Accepts]: Start accepts. Automaton has 51946 states and 72997 transitions. Word has length 144 [2021-11-04 09:00:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:00:41,133 INFO L470 AbstractCegarLoop]: Abstraction has 51946 states and 72997 transitions. [2021-11-04 09:00:41,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:00:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 51946 states and 72997 transitions. [2021-11-04 09:00:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 09:00:41,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:00:41,138 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:00:41,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 09:00:41,138 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:00:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:00:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1059234589, now seen corresponding path program 1 times [2021-11-04 09:00:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:00:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130014350] [2021-11-04 09:00:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:00:41,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:00:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:00:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:00:41,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:00:41,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130014350] [2021-11-04 09:00:41,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130014350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:00:41,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:00:41,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:00:41,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706901467] [2021-11-04 09:00:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:00:41,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:00:41,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:00:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:00:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:00:41,383 INFO L87 Difference]: Start difference. First operand 51946 states and 72997 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:00:44,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:01:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:01:08,253 INFO L93 Difference]: Finished difference Result 104049 states and 146180 transitions. [2021-11-04 09:01:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:01:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 09:01:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:01:08,347 INFO L225 Difference]: With dead ends: 104049 [2021-11-04 09:01:08,347 INFO L226 Difference]: Without dead ends: 52126 [2021-11-04 09:01:08,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:01:08,414 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 12217 mSDsCounter, 0 mSdLazyCounter, 18302 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22725.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.09ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25191.60ms IncrementalHoareTripleChecker+Time [2021-11-04 09:01:08,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 84 Invalid, 18312 Unknown, 0 Unchecked, 30.09ms Time], IncrementalHoareTripleChecker [9 Valid, 18302 Invalid, 1 Unknown, 0 Unchecked, 25191.60ms Time] [2021-11-04 09:01:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52126 states. [2021-11-04 09:01:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52126 to 52006. [2021-11-04 09:01:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52006 states, 51606 states have (on average 1.4009417509591908) internal successors, (72297), 51770 states have internal predecessors, (72297), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:01:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52006 states to 52006 states and 73057 transitions. [2021-11-04 09:01:09,742 INFO L78 Accepts]: Start accepts. Automaton has 52006 states and 73057 transitions. Word has length 144 [2021-11-04 09:01:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:01:09,743 INFO L470 AbstractCegarLoop]: Abstraction has 52006 states and 73057 transitions. [2021-11-04 09:01:09,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:01:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 52006 states and 73057 transitions. [2021-11-04 09:01:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 09:01:09,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:01:09,752 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:01:09,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 09:01:09,752 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:01:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:01:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1396511, now seen corresponding path program 1 times [2021-11-04 09:01:09,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:01:09,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450787322] [2021-11-04 09:01:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:01:09,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:01:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:01:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:01:10,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:01:10,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450787322] [2021-11-04 09:01:10,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450787322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:01:10,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:01:10,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:01:10,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589535013] [2021-11-04 09:01:10,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:01:10,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:01:10,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:01:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:01:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:01:10,057 INFO L87 Difference]: Start difference. First operand 52006 states and 73057 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:01:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:01:49,893 INFO L93 Difference]: Finished difference Result 167475 states and 235156 transitions. [2021-11-04 09:01:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:01:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 09:01:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:01:50,109 INFO L225 Difference]: With dead ends: 167475 [2021-11-04 09:01:50,110 INFO L226 Difference]: Without dead ends: 115492 [2021-11-04 09:01:50,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:01:50,181 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 12301 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 26633 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31997.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12306 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.57ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36068.36ms IncrementalHoareTripleChecker+Time [2021-11-04 09:01:50,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12306 Valid, 114 Invalid, 26643 Unknown, 0 Unchecked, 65.57ms Time], IncrementalHoareTripleChecker [10 Valid, 26633 Invalid, 0 Unknown, 0 Unchecked, 36068.36ms Time] [2021-11-04 09:01:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115492 states. [2021-11-04 09:01:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115492 to 52026. [2021-11-04 09:01:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52026 states, 51626 states have (on average 1.4007864254445435) internal successors, (72317), 51790 states have internal predecessors, (72317), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:01:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52026 states to 52026 states and 73077 transitions. [2021-11-04 09:01:52,158 INFO L78 Accepts]: Start accepts. Automaton has 52026 states and 73077 transitions. Word has length 144 [2021-11-04 09:01:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:01:52,159 INFO L470 AbstractCegarLoop]: Abstraction has 52026 states and 73077 transitions. [2021-11-04 09:01:52,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:01:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 52026 states and 73077 transitions. [2021-11-04 09:01:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-04 09:01:52,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:01:52,162 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:01:52,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 09:01:52,163 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:01:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:01:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1799987637, now seen corresponding path program 1 times [2021-11-04 09:01:52,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:01:52,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548223600] [2021-11-04 09:01:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:01:52,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:01:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:01:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:01:52,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:01:52,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548223600] [2021-11-04 09:01:52,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548223600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:01:52,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:01:52,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:01:52,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667108685] [2021-11-04 09:01:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:01:52,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:01:52,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:01:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:01:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:01:52,324 INFO L87 Difference]: Start difference. First operand 52026 states and 73077 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:01:56,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:02:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:02:43,622 INFO L93 Difference]: Finished difference Result 199063 states and 279389 transitions. [2021-11-04 09:02:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:02:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-04 09:02:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:02:44,057 INFO L225 Difference]: With dead ends: 199063 [2021-11-04 09:02:44,057 INFO L226 Difference]: Without dead ends: 147060 [2021-11-04 09:02:44,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:02:44,127 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 12343 mSDsluCounter, 20360 mSDsCounter, 0 mSdLazyCounter, 34477 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41149.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12353 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 34488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.93ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46212.52ms IncrementalHoareTripleChecker+Time [2021-11-04 09:02:44,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12353 Valid, 133 Invalid, 34488 Unknown, 0 Unchecked, 75.93ms Time], IncrementalHoareTripleChecker [11 Valid, 34477 Invalid, 0 Unknown, 0 Unchecked, 46212.52ms Time] [2021-11-04 09:02:44,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147060 states. [2021-11-04 09:02:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147060 to 52046. [2021-11-04 09:02:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52046 states, 51646 states have (on average 1.4006312202300275) internal successors, (72337), 51810 states have internal predecessors, (72337), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:02:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52046 states to 52046 states and 73097 transitions. [2021-11-04 09:02:46,194 INFO L78 Accepts]: Start accepts. Automaton has 52046 states and 73097 transitions. Word has length 145 [2021-11-04 09:02:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:02:46,194 INFO L470 AbstractCegarLoop]: Abstraction has 52046 states and 73097 transitions. [2021-11-04 09:02:46,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:02:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 52046 states and 73097 transitions. [2021-11-04 09:02:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-04 09:02:46,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:02:46,198 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:02:46,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-04 09:02:46,198 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:02:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:02:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash 272797706, now seen corresponding path program 1 times [2021-11-04 09:02:46,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:02:46,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782934961] [2021-11-04 09:02:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:02:46,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:02:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:02:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:02:46,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:02:46,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782934961] [2021-11-04 09:02:46,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782934961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:02:46,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:02:46,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:02:46,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580008041] [2021-11-04 09:02:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:02:46,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:02:46,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:02:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:02:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:02:46,306 INFO L87 Difference]: Start difference. First operand 52046 states and 73097 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:02:48,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:02:50,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:03:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:03:23,205 INFO L93 Difference]: Finished difference Result 120916 states and 169587 transitions. [2021-11-04 09:03:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:03:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-04 09:03:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:03:23,336 INFO L225 Difference]: With dead ends: 120916 [2021-11-04 09:03:23,336 INFO L226 Difference]: Without dead ends: 68893 [2021-11-04 09:03:23,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:03:23,419 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 6650 mSDsluCounter, 14274 mSDsCounter, 0 mSdLazyCounter, 24632 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30854.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6650 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 24640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 112.96ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24632 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34371.15ms IncrementalHoareTripleChecker+Time [2021-11-04 09:03:23,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6650 Valid, 126 Invalid, 24640 Unknown, 0 Unchecked, 112.96ms Time], IncrementalHoareTripleChecker [7 Valid, 24632 Invalid, 1 Unknown, 0 Unchecked, 34371.15ms Time] [2021-11-04 09:03:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68893 states. [2021-11-04 09:03:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68893 to 52066. [2021-11-04 09:03:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52066 states, 51666 states have (on average 1.4004761351759378) internal successors, (72357), 51830 states have internal predecessors, (72357), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:03:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52066 states to 52066 states and 73117 transitions. [2021-11-04 09:03:25,337 INFO L78 Accepts]: Start accepts. Automaton has 52066 states and 73117 transitions. Word has length 151 [2021-11-04 09:03:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:03:25,337 INFO L470 AbstractCegarLoop]: Abstraction has 52066 states and 73117 transitions. [2021-11-04 09:03:25,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:03:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 52066 states and 73117 transitions. [2021-11-04 09:03:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-04 09:03:25,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:03:25,341 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:03:25,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 09:03:25,341 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:03:25,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:03:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1654405203, now seen corresponding path program 1 times [2021-11-04 09:03:25,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:03:25,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646949577] [2021-11-04 09:03:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:03:25,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:03:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:03:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:03:25,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:03:25,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646949577] [2021-11-04 09:03:25,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646949577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:03:25,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:03:25,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:03:25,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235811739] [2021-11-04 09:03:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:03:25,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:03:25,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:03:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:03:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:03:25,493 INFO L87 Difference]: Start difference. First operand 52066 states and 73117 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:03:27,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:03:28,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:03:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:03:50,001 INFO L93 Difference]: Finished difference Result 104189 states and 146310 transitions. [2021-11-04 09:03:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:03:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-04 09:03:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:03:50,093 INFO L225 Difference]: With dead ends: 104189 [2021-11-04 09:03:50,093 INFO L226 Difference]: Without dead ends: 52146 [2021-11-04 09:03:50,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:03:50,165 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 18313 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20547.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22858.00ms IncrementalHoareTripleChecker+Time [2021-11-04 09:03:50,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 18318 Unknown, 0 Unchecked, 23.78ms Time], IncrementalHoareTripleChecker [5 Valid, 18313 Invalid, 0 Unknown, 0 Unchecked, 22858.00ms Time] [2021-11-04 09:03:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52146 states. [2021-11-04 09:03:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52146 to 52106. [2021-11-04 09:03:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52106 states, 51706 states have (on average 1.400166324991297) internal successors, (72397), 51870 states have internal predecessors, (72397), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:03:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52106 states to 52106 states and 73157 transitions. [2021-11-04 09:03:51,784 INFO L78 Accepts]: Start accepts. Automaton has 52106 states and 73157 transitions. Word has length 152 [2021-11-04 09:03:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:03:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 52106 states and 73157 transitions. [2021-11-04 09:03:51,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:03:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 52106 states and 73157 transitions. [2021-11-04 09:03:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-04 09:03:51,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:03:51,788 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:03:51,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-04 09:03:51,788 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:03:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:03:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1708798101, now seen corresponding path program 1 times [2021-11-04 09:03:51,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:03:51,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210588602] [2021-11-04 09:03:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:03:51,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:03:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:03:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:03:51,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:03:51,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210588602] [2021-11-04 09:03:51,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210588602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:03:51,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:03:51,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 09:03:51,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508261749] [2021-11-04 09:03:51,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:03:51,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 09:03:51,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:03:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 09:03:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:03:51,990 INFO L87 Difference]: Start difference. First operand 52106 states and 73157 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:03:55,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:03:57,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:04:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:04:29,846 INFO L93 Difference]: Finished difference Result 121106 states and 169777 transitions. [2021-11-04 09:04:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 09:04:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-04 09:04:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:04:29,974 INFO L225 Difference]: With dead ends: 121106 [2021-11-04 09:04:29,974 INFO L226 Difference]: Without dead ends: 69023 [2021-11-04 09:04:30,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.41ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 09:04:30,050 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9094 mSDsluCounter, 18494 mSDsCounter, 0 mSdLazyCounter, 24876 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31476.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9094 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 24889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.76ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24876 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35188.35ms IncrementalHoareTripleChecker+Time [2021-11-04 09:04:30,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9094 Valid, 139 Invalid, 24889 Unknown, 0 Unchecked, 49.76ms Time], IncrementalHoareTripleChecker [11 Valid, 24876 Invalid, 2 Unknown, 0 Unchecked, 35188.35ms Time] [2021-11-04 09:04:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69023 states. [2021-11-04 09:04:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69023 to 52116. [2021-11-04 09:04:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52116 states, 51716 states have (on average 1.400088947327713) internal successors, (72407), 51880 states have internal predecessors, (72407), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:04:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52116 states to 52116 states and 73167 transitions. [2021-11-04 09:04:31,952 INFO L78 Accepts]: Start accepts. Automaton has 52116 states and 73167 transitions. Word has length 152 [2021-11-04 09:04:31,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:04:31,953 INFO L470 AbstractCegarLoop]: Abstraction has 52116 states and 73167 transitions. [2021-11-04 09:04:31,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:04:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 52116 states and 73167 transitions. [2021-11-04 09:04:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-04 09:04:31,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:04:31,955 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:04:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-04 09:04:31,955 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:04:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:04:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash 740802029, now seen corresponding path program 1 times [2021-11-04 09:04:31,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:04:31,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723397325] [2021-11-04 09:04:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:04:31,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:04:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:04:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:04:32,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:04:32,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723397325] [2021-11-04 09:04:32,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723397325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:04:32,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:04:32,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 09:04:32,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44514123] [2021-11-04 09:04:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:04:32,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 09:04:32,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:04:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 09:04:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:04:32,215 INFO L87 Difference]: Start difference. First operand 52116 states and 73167 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:05:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:05:25,814 INFO L93 Difference]: Finished difference Result 200843 states and 281619 transitions. [2021-11-04 09:05:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 09:05:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-04 09:05:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:05:26,136 INFO L225 Difference]: With dead ends: 200843 [2021-11-04 09:05:26,136 INFO L226 Difference]: Without dead ends: 148750 [2021-11-04 09:05:26,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.76ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 09:05:26,232 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 21300 mSDsluCounter, 23097 mSDsCounter, 0 mSdLazyCounter, 33467 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42019.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21305 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 33540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.69ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 33467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47200.73ms IncrementalHoareTripleChecker+Time [2021-11-04 09:05:26,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21305 Valid, 154 Invalid, 33540 Unknown, 0 Unchecked, 98.69ms Time], IncrementalHoareTripleChecker [73 Valid, 33467 Invalid, 0 Unknown, 0 Unchecked, 47200.73ms Time] [2021-11-04 09:05:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148750 states. [2021-11-04 09:05:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148750 to 52146. [2021-11-04 09:05:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52146 states, 51746 states have (on average 1.3998569937772969) internal successors, (72437), 51910 states have internal predecessors, (72437), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:05:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52146 states to 52146 states and 73197 transitions. [2021-11-04 09:05:28,915 INFO L78 Accepts]: Start accepts. Automaton has 52146 states and 73197 transitions. Word has length 152 [2021-11-04 09:05:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:05:28,915 INFO L470 AbstractCegarLoop]: Abstraction has 52146 states and 73197 transitions. [2021-11-04 09:05:28,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:05:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 52146 states and 73197 transitions. [2021-11-04 09:05:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 09:05:28,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:05:28,917 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:05:28,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-04 09:05:28,917 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:05:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:05:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash 384159441, now seen corresponding path program 1 times [2021-11-04 09:05:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:05:28,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240803208] [2021-11-04 09:05:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:05:28,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:05:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:05:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:05:29,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:05:29,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240803208] [2021-11-04 09:05:29,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240803208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 09:05:29,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168436253] [2021-11-04 09:05:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:05:29,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 09:05:29,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:05:29,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 09:05:29,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 09:05:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:05:30,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 09:05:30,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 09:05:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 09:05:30,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 09:05:30,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168436253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:05:30,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 09:05:30,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-04 09:05:30,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906177315] [2021-11-04 09:05:30,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:05:30,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 09:05:30,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:05:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 09:05:30,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 09:05:30,423 INFO L87 Difference]: Start difference. First operand 52146 states and 73197 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:06:20,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:06:20,453 INFO L93 Difference]: Finished difference Result 130575 states and 182821 transitions. [2021-11-04 09:06:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 09:06:20,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-04 09:06:20,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:06:20,589 INFO L225 Difference]: With dead ends: 130575 [2021-11-04 09:06:20,589 INFO L226 Difference]: Without dead ends: 78452 [2021-11-04 09:06:20,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 56.12ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-04 09:06:20,657 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 7006 mSDsluCounter, 27723 mSDsCounter, 0 mSdLazyCounter, 38437 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40693.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7012 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 38450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.68ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45746.34ms IncrementalHoareTripleChecker+Time [2021-11-04 09:06:20,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7012 Valid, 160 Invalid, 38450 Unknown, 0 Unchecked, 81.68ms Time], IncrementalHoareTripleChecker [13 Valid, 38437 Invalid, 0 Unknown, 0 Unchecked, 45746.34ms Time] [2021-11-04 09:06:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78452 states. [2021-11-04 09:06:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78452 to 52206. [2021-11-04 09:06:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52206 states, 51806 states have (on average 1.3993938925993128) internal successors, (72497), 51970 states have internal predecessors, (72497), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:06:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52206 states to 52206 states and 73257 transitions. [2021-11-04 09:06:22,895 INFO L78 Accepts]: Start accepts. Automaton has 52206 states and 73257 transitions. Word has length 154 [2021-11-04 09:06:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:06:22,895 INFO L470 AbstractCegarLoop]: Abstraction has 52206 states and 73257 transitions. [2021-11-04 09:06:22,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:06:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 52206 states and 73257 transitions. [2021-11-04 09:06:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 09:06:22,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:06:22,897 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:06:22,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 09:06:23,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-04 09:06:23,098 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:06:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:06:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash 162186709, now seen corresponding path program 1 times [2021-11-04 09:06:23,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:06:23,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481094165] [2021-11-04 09:06:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:06:23,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:06:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:06:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:06:23,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:06:23,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481094165] [2021-11-04 09:06:23,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481094165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 09:06:23,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245301103] [2021-11-04 09:06:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:06:23,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 09:06:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:06:23,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 09:06:23,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 09:06:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:06:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 09:06:24,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 09:06:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 09:06:24,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 09:06:24,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245301103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:06:24,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 09:06:24,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-04 09:06:24,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198651847] [2021-11-04 09:06:24,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:06:24,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 09:06:24,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:06:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 09:06:24,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 09:06:24,573 INFO L87 Difference]: Start difference. First operand 52206 states and 73257 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:06:25,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:06:28,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:06:30,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:06:32,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:07:02,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:07:02,510 INFO L93 Difference]: Finished difference Result 112604 states and 158750 transitions. [2021-11-04 09:07:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 09:07:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-04 09:07:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:07:02,605 INFO L225 Difference]: With dead ends: 112604 [2021-11-04 09:07:02,605 INFO L226 Difference]: Without dead ends: 60421 [2021-11-04 09:07:02,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60.77ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-04 09:07:02,680 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 1179 mSDsluCounter, 18791 mSDsCounter, 0 mSdLazyCounter, 24824 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32009.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 24828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.68ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24824 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35323.75ms IncrementalHoareTripleChecker+Time [2021-11-04 09:07:02,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 124 Invalid, 24828 Unknown, 0 Unchecked, 42.68ms Time], IncrementalHoareTripleChecker [2 Valid, 24824 Invalid, 2 Unknown, 0 Unchecked, 35323.75ms Time] [2021-11-04 09:07:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60421 states. [2021-11-04 09:07:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60421 to 52251. [2021-11-04 09:07:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52251 states, 51851 states have (on average 1.3990472700622938) internal successors, (72542), 52015 states have internal predecessors, (72542), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-04 09:07:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52251 states to 52251 states and 73302 transitions. [2021-11-04 09:07:04,722 INFO L78 Accepts]: Start accepts. Automaton has 52251 states and 73302 transitions. Word has length 154 [2021-11-04 09:07:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:07:04,723 INFO L470 AbstractCegarLoop]: Abstraction has 52251 states and 73302 transitions. [2021-11-04 09:07:04,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:07:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 52251 states and 73302 transitions. [2021-11-04 09:07:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 09:07:04,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:07:04,724 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:07:04,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 09:07:04,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 09:07:04,926 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-04 09:07:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:07:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash 248074162, now seen corresponding path program 1 times [2021-11-04 09:07:04,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:07:04,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796107084] [2021-11-04 09:07:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:07:04,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:07:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:07:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:07:05,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:07:05,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796107084] [2021-11-04 09:07:05,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796107084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 09:07:05,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871015183] [2021-11-04 09:07:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:07:05,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 09:07:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:07:05,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 09:07:05,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 09:07:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:07:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-04 09:07:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 09:07:06,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-04 09:07:06,342 INFO L354 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2021-11-04 09:07:06,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 44 [2021-11-04 09:07:06,385 INFO L354 Elim1Store]: treesize reduction 175, result has 12.9 percent of original size [2021-11-04 09:07:06,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-11-04 09:07:06,450 INFO L354 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2021-11-04 09:07:06,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 44 [2021-11-04 09:07:06,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-04 09:07:06,509 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-04 09:07:06,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2021-11-04 09:07:06,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-04 09:07:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:07:06,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 09:07:06,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871015183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:07:06,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 09:07:06,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2021-11-04 09:07:06,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338148306] [2021-11-04 09:07:06,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:07:06,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 09:07:06,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:07:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 09:07:06,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-04 09:07:06,832 INFO L87 Difference]: Start difference. First operand 52251 states and 73302 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:07:10,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:07:12,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:07:14,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:07:15,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:07:17,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:07:20,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15