./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/ntdrivers/parport.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:33:09,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:33:09,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:33:09,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:33:09,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:33:09,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:33:09,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:33:09,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:33:09,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:33:09,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:33:09,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:33:09,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:33:09,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:33:09,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:33:09,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:33:09,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:33:09,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:33:09,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:33:09,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:33:09,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:33:09,697 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:33:09,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:33:09,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:33:09,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:33:09,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:33:09,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:33:09,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:33:09,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:33:09,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:33:09,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:33:09,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:33:09,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:33:09,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:33:09,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:33:09,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:33:09,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:33:09,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:33:09,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:33:09,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:33:09,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:33:09,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:33:09,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:33:09,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:33:09,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:33:09,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:33:09,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:33:09,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:33:09,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:33:09,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:33:09,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:33:09,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:33:09,732 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:33:09,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:33:09,732 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:33:09,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:33:09,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:33:09,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:33:09,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:33:09,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:33:09,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:33:09,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:33:09,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:33:09,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:33:09,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:33:09,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:33:09,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:33:09,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:33:09,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:33:09,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:33:09,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:33:09,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:33:09,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:33:09,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:33:09,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:33:09,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:33:09,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:33:09,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2022-07-13 11:33:09,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:33:09,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:33:10,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:33:10,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:33:10,004 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:33:10,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-07-13 11:33:10,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3da5eabe/7b9df16e15e6414cad350044f838b9f1/FLAG3104a60fc [2022-07-13 11:33:10,706 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:33:10,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-07-13 11:33:10,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3da5eabe/7b9df16e15e6414cad350044f838b9f1/FLAG3104a60fc [2022-07-13 11:33:10,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3da5eabe/7b9df16e15e6414cad350044f838b9f1 [2022-07-13 11:33:10,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:33:10,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:33:10,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:33:10,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:33:10,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:33:10,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:33:10" (1/1) ... [2022-07-13 11:33:10,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2919c376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:10, skipping insertion in model container [2022-07-13 11:33:10,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:33:10" (1/1) ... [2022-07-13 11:33:10,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:33:10,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:33:11,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c[86591,86604] [2022-07-13 11:33:12,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:33:12,127 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:33:12,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c[86591,86604] [2022-07-13 11:33:12,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:33:12,512 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:33:12,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12 WrapperNode [2022-07-13 11:33:12,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:33:12,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:33:12,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:33:12,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:33:12,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,753 INFO L137 Inliner]: procedures = 248, calls = 2334, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4784 [2022-07-13 11:33:12,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:33:12,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:33:12,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:33:12,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:33:12,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:12,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:13,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:13,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:33:13,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:33:13,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:33:13,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:33:13,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (1/1) ... [2022-07-13 11:33:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:33:13,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:33:13,080 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) [2022-07-13 11:33:13,093 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 [2022-07-13 11:33:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-07-13 11:33:13,128 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-07-13 11:33:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-07-13 11:33:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-07-13 11:33:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-07-13 11:33:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-07-13 11:33:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-07-13 11:33:13,129 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-07-13 11:33:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-07-13 11:33:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-07-13 11:33:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 11:33:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 11:33:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-07-13 11:33:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-07-13 11:33:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-07-13 11:33:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-07-13 11:33:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-07-13 11:33:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-07-13 11:33:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-13 11:33:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-13 11:33:13,131 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-07-13 11:33:13,131 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-07-13 11:33:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 11:33:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 11:33:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-13 11:33:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-13 11:33:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-07-13 11:33:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-07-13 11:33:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-07-13 11:33:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-07-13 11:33:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 11:33:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-07-13 11:33:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-07-13 11:33:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-07-13 11:33:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-07-13 11:33:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:33:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-07-13 11:33:13,134 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-07-13 11:33:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-07-13 11:33:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-07-13 11:33:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-07-13 11:33:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-07-13 11:33:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-07-13 11:33:13,135 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-07-13 11:33:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 11:33:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 11:33:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-07-13 11:33:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-07-13 11:33:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-07-13 11:33:13,136 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-07-13 11:33:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-07-13 11:33:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-07-13 11:33:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-13 11:33:13,137 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-13 11:33:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-07-13 11:33:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-07-13 11:33:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-07-13 11:33:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-07-13 11:33:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-07-13 11:33:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-07-13 11:33:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 11:33:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-07-13 11:33:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-07-13 11:33:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-07-13 11:33:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-07-13 11:33:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-07-13 11:33:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-07-13 11:33:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-07-13 11:33:13,141 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-07-13 11:33:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 11:33:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-07-13 11:33:13,141 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-07-13 11:33:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:33:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-07-13 11:33:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-07-13 11:33:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-07-13 11:33:13,143 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-07-13 11:33:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-07-13 11:33:13,143 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-07-13 11:33:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-07-13 11:33:13,143 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-07-13 11:33:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-13 11:33:13,143 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-13 11:33:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 11:33:13,144 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 11:33:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-07-13 11:33:13,144 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-07-13 11:33:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-07-13 11:33:13,144 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-07-13 11:33:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-07-13 11:33:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-07-13 11:33:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-07-13 11:33:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-07-13 11:33:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-13 11:33:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-13 11:33:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-07-13 11:33:13,147 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-07-13 11:33:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:33:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-07-13 11:33:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-07-13 11:33:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-07-13 11:33:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-07-13 11:33:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-07-13 11:33:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-07-13 11:33:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:33:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-07-13 11:33:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-07-13 11:33:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-07-13 11:33:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-07-13 11:33:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:33:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-07-13 11:33:13,150 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-07-13 11:33:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-07-13 11:33:13,150 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-07-13 11:33:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-07-13 11:33:13,151 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-07-13 11:33:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:33:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-13 11:33:13,154 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-13 11:33:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-07-13 11:33:13,154 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-07-13 11:33:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-07-13 11:33:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-07-13 11:33:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-07-13 11:33:13,157 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-07-13 11:33:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-07-13 11:33:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-07-13 11:33:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-07-13 11:33:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-07-13 11:33:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-07-13 11:33:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-07-13 11:33:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-07-13 11:33:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-07-13 11:33:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-07-13 11:33:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-07-13 11:33:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-07-13 11:33:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-07-13 11:33:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-07-13 11:33:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-07-13 11:33:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-07-13 11:33:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-07-13 11:33:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-07-13 11:33:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-07-13 11:33:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-07-13 11:33:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-07-13 11:33:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:33:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-07-13 11:33:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-07-13 11:33:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-07-13 11:33:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-07-13 11:33:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-07-13 11:33:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-07-13 11:33:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-07-13 11:33:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-07-13 11:33:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:33:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:33:13,903 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:33:13,905 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:33:14,020 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:14,101 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-07-13 11:33:14,102 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-07-13 11:33:14,106 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:14,210 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-07-13 11:33:14,210 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-07-13 11:33:14,521 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:14,571 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-07-13 11:33:14,571 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-07-13 11:33:14,892 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:14,896 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-13 11:33:14,896 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-13 11:33:14,980 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:14,998 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-07-13 11:33:14,998 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-07-13 11:33:15,086 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,094 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-13 11:33:15,094 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-13 11:33:15,096 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,117 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-07-13 11:33:15,117 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-07-13 11:33:15,118 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,155 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-07-13 11:33:15,156 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-07-13 11:33:15,454 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,457 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,458 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,459 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,459 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,460 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,469 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,471 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,475 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,477 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,478 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:15,480 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:33:23,837 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##386: assume false; [2022-07-13 11:33:23,837 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##387: assume !false; [2022-07-13 11:33:23,837 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##425: assume !false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##424: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##489: assume !false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##488: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##533: assume !false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##532: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##543: assume !false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##542: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-07-13 11:33:23,838 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##588: assume !false; [2022-07-13 11:33:23,839 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##587: assume false; [2022-07-13 11:33:23,914 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:33:23,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:33:23,937 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2022-07-13 11:33:23,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:33:23 BoogieIcfgContainer [2022-07-13 11:33:23,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:33:23,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:33:23,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:33:23,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:33:23,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:33:10" (1/3) ... [2022-07-13 11:33:23,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352f8fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:33:23, skipping insertion in model container [2022-07-13 11:33:23,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:33:12" (2/3) ... [2022-07-13 11:33:23,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352f8fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:33:23, skipping insertion in model container [2022-07-13 11:33:23,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:33:23" (3/3) ... [2022-07-13 11:33:23,952 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-07-13 11:33:23,966 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:33:23,967 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:33:24,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:33:24,086 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2009979e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f96ec59 [2022-07-13 11:33:24,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:33:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 1779 states, 1254 states have (on average 1.4832535885167464) internal successors, (1860), 1303 states have internal predecessors, (1860), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) [2022-07-13 11:33:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 11:33:24,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:24,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:24,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash -773300714, now seen corresponding path program 1 times [2022-07-13 11:33:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:24,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032029857] [2022-07-13 11:33:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:24,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:24,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032029857] [2022-07-13 11:33:24,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032029857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:24,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:24,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:33:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695891766] [2022-07-13 11:33:24,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:24,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:33:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:33:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:24,627 INFO L87 Difference]: Start difference. First operand has 1779 states, 1254 states have (on average 1.4832535885167464) internal successors, (1860), 1303 states have internal predecessors, (1860), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-13 11:33:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:24,858 INFO L93 Difference]: Finished difference Result 3554 states and 5647 transitions. [2022-07-13 11:33:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:33:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2022-07-13 11:33:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:24,891 INFO L225 Difference]: With dead ends: 3554 [2022-07-13 11:33:24,891 INFO L226 Difference]: Without dead ends: 1774 [2022-07-13 11:33:24,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:24,906 INFO L413 NwaCegarLoop]: 2647 mSDtfsCounter, 1 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5292 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:24,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5292 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:33:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-07-13 11:33:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1773. [2022-07-13 11:33:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1250 states have (on average 1.4) internal successors, (1750), 1297 states have internal predecessors, (1750), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2022-07-13 11:33:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2637 transitions. [2022-07-13 11:33:25,077 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2637 transitions. Word has length 15 [2022-07-13 11:33:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:25,077 INFO L495 AbstractCegarLoop]: Abstraction has 1773 states and 2637 transitions. [2022-07-13 11:33:25,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-07-13 11:33:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2637 transitions. [2022-07-13 11:33:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 11:33:25,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:25,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:33:25,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 971741108, now seen corresponding path program 1 times [2022-07-13 11:33:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:25,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248200613] [2022-07-13 11:33:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:25,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:25,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248200613] [2022-07-13 11:33:25,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248200613] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:33:25,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492728393] [2022-07-13 11:33:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:33:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:33:25,237 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) [2022-07-13 11:33:25,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:33:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:25,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:33:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:33:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 11:33:25,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:33:25,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492728393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:25,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:33:25,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-13 11:33:25,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263326494] [2022-07-13 11:33:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:25,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:33:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:33:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:25,850 INFO L87 Difference]: Start difference. First operand 1773 states and 2637 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-07-13 11:33:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:25,979 INFO L93 Difference]: Finished difference Result 1843 states and 2725 transitions. [2022-07-13 11:33:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:33:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17 [2022-07-13 11:33:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:25,990 INFO L225 Difference]: With dead ends: 1843 [2022-07-13 11:33:25,990 INFO L226 Difference]: Without dead ends: 1824 [2022-07-13 11:33:25,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:25,992 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 2614 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:25,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 2698 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:33:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-07-13 11:33:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1815. [2022-07-13 11:33:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1284 states have (on average 1.397196261682243) internal successors, (1794), 1333 states have internal predecessors, (1794), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-07-13 11:33:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2689 transitions. [2022-07-13 11:33:26,065 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2689 transitions. Word has length 17 [2022-07-13 11:33:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:26,065 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2689 transitions. [2022-07-13 11:33:26,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-07-13 11:33:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2689 transitions. [2022-07-13 11:33:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 11:33:26,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:26,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:26,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:33:26,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:33:26,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:26,282 INFO L85 PathProgramCache]: Analyzing trace with hash 957396199, now seen corresponding path program 1 times [2022-07-13 11:33:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:26,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189960800] [2022-07-13 11:33:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:26,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:26,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189960800] [2022-07-13 11:33:26,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189960800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:33:26,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577501876] [2022-07-13 11:33:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:26,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:33:26,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:33:26,399 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) [2022-07-13 11:33:26,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:33:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:26,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:33:26,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:33:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 11:33:26,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:33:26,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577501876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:26,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:33:26,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-13 11:33:26,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155226440] [2022-07-13 11:33:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:26,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:33:26,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:33:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:26,950 INFO L87 Difference]: Start difference. First operand 1815 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-07-13 11:33:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:27,103 INFO L93 Difference]: Finished difference Result 1831 states and 2708 transitions. [2022-07-13 11:33:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:33:27,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17 [2022-07-13 11:33:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:27,113 INFO L225 Difference]: With dead ends: 1831 [2022-07-13 11:33:27,113 INFO L226 Difference]: Without dead ends: 1815 [2022-07-13 11:33:27,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:27,115 INFO L413 NwaCegarLoop]: 2636 mSDtfsCounter, 0 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5215 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:27,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5215 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:33:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-07-13 11:33:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1815. [2022-07-13 11:33:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1284 states have (on average 1.396417445482866) internal successors, (1793), 1333 states have internal predecessors, (1793), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-07-13 11:33:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2688 transitions. [2022-07-13 11:33:27,187 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2688 transitions. Word has length 17 [2022-07-13 11:33:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:27,187 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2688 transitions. [2022-07-13 11:33:27,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-07-13 11:33:27,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2688 transitions. [2022-07-13 11:33:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 11:33:27,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:27,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:27,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 11:33:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 11:33:27,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash 805678958, now seen corresponding path program 1 times [2022-07-13 11:33:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:27,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500432197] [2022-07-13 11:33:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:27,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500432197] [2022-07-13 11:33:27,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500432197] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:33:27,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990325168] [2022-07-13 11:33:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:27,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:33:27,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:33:27,512 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) [2022-07-13 11:33:27,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:33:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:28,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:33:28,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:33:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:28,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:33:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:33:28,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990325168] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:33:28,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:33:28,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 11:33:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647458063] [2022-07-13 11:33:28,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:33:28,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:33:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:33:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:33:28,127 INFO L87 Difference]: Start difference. First operand 1815 states and 2688 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:28,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:28,265 INFO L93 Difference]: Finished difference Result 3631 states and 5379 transitions. [2022-07-13 11:33:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:33:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-13 11:33:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:28,275 INFO L225 Difference]: With dead ends: 3631 [2022-07-13 11:33:28,276 INFO L226 Difference]: Without dead ends: 1821 [2022-07-13 11:33:28,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:33:28,282 INFO L413 NwaCegarLoop]: 2633 mSDtfsCounter, 4 mSDsluCounter, 5262 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:28,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7895 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:33:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-07-13 11:33:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2022-07-13 11:33:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1290 states have (on average 1.3945736434108527) internal successors, (1799), 1339 states have internal predecessors, (1799), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-07-13 11:33:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2694 transitions. [2022-07-13 11:33:28,348 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2694 transitions. Word has length 21 [2022-07-13 11:33:28,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:28,348 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2694 transitions. [2022-07-13 11:33:28,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2694 transitions. [2022-07-13 11:33:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 11:33:28,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:28,350 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:33:28,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:33:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:33:28,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -130039224, now seen corresponding path program 2 times [2022-07-13 11:33:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:28,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684121406] [2022-07-13 11:33:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684121406] [2022-07-13 11:33:28,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684121406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:28,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:28,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:33:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896661099] [2022-07-13 11:33:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:28,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:33:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:33:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:28,729 INFO L87 Difference]: Start difference. First operand 1821 states and 2694 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:29,041 INFO L93 Difference]: Finished difference Result 4647 states and 6936 transitions. [2022-07-13 11:33:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:33:29,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-13 11:33:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:29,060 INFO L225 Difference]: With dead ends: 4647 [2022-07-13 11:33:29,060 INFO L226 Difference]: Without dead ends: 3432 [2022-07-13 11:33:29,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:29,066 INFO L413 NwaCegarLoop]: 4649 mSDtfsCounter, 2520 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 7025 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:29,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 7025 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:33:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2022-07-13 11:33:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 3401. [2022-07-13 11:33:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 2410 states have (on average 1.3908713692946058) internal successors, (3352), 2478 states have internal predecessors, (3352), 851 states have call successors, (851), 142 states have call predecessors, (851), 139 states have return successors, (869), 818 states have call predecessors, (869), 835 states have call successors, (869) [2022-07-13 11:33:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 5072 transitions. [2022-07-13 11:33:29,242 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 5072 transitions. Word has length 27 [2022-07-13 11:33:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:29,243 INFO L495 AbstractCegarLoop]: Abstraction has 3401 states and 5072 transitions. [2022-07-13 11:33:29,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 5072 transitions. [2022-07-13 11:33:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 11:33:29,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:29,245 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:29,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:33:29,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1667935007, now seen corresponding path program 1 times [2022-07-13 11:33:29,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:29,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680125687] [2022-07-13 11:33:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 11:33:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:29,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:29,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680125687] [2022-07-13 11:33:29,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680125687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:29,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:29,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:33:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976250563] [2022-07-13 11:33:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:33:29,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:33:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:33:29,469 INFO L87 Difference]: Start difference. First operand 3401 states and 5072 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:33,186 INFO L93 Difference]: Finished difference Result 4210 states and 6250 transitions. [2022-07-13 11:33:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 11:33:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-13 11:33:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:33,219 INFO L225 Difference]: With dead ends: 4210 [2022-07-13 11:33:33,219 INFO L226 Difference]: Without dead ends: 4205 [2022-07-13 11:33:33,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:33,224 INFO L413 NwaCegarLoop]: 2484 mSDtfsCounter, 2469 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 1458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1458 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:33,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 4455 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1458 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 11:33:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2022-07-13 11:33:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4176. [2022-07-13 11:33:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2902 states have (on average 1.3818056512749828) internal successors, (4010), 2980 states have internal predecessors, (4010), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-07-13 11:33:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6205 transitions. [2022-07-13 11:33:33,450 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6205 transitions. Word has length 40 [2022-07-13 11:33:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:33,451 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6205 transitions. [2022-07-13 11:33:33,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6205 transitions. [2022-07-13 11:33:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 11:33:33,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:33,456 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:33,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:33:33,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash 618913342, now seen corresponding path program 1 times [2022-07-13 11:33:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:33,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55701136] [2022-07-13 11:33:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 11:33:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:33,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55701136] [2022-07-13 11:33:33,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55701136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:33,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:33,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:33:33,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21507894] [2022-07-13 11:33:33,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:33:33,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:33:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:33:33,724 INFO L87 Difference]: Start difference. First operand 4176 states and 6205 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:39,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:39,090 INFO L93 Difference]: Finished difference Result 4223 states and 6262 transitions. [2022-07-13 11:33:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:39,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-13 11:33:39,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:39,110 INFO L225 Difference]: With dead ends: 4223 [2022-07-13 11:33:39,111 INFO L226 Difference]: Without dead ends: 4214 [2022-07-13 11:33:39,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:33:39,113 INFO L413 NwaCegarLoop]: 2437 mSDtfsCounter, 6229 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 3677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6361 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 7934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3677 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:39,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6361 Valid, 5116 Invalid, 7934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3677 Valid, 4257 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 11:33:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2022-07-13 11:33:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4176. [2022-07-13 11:33:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2902 states have (on average 1.3811164713990352) internal successors, (4008), 2980 states have internal predecessors, (4008), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-07-13 11:33:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6203 transitions. [2022-07-13 11:33:39,297 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6203 transitions. Word has length 41 [2022-07-13 11:33:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:39,298 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6203 transitions. [2022-07-13 11:33:39,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6203 transitions. [2022-07-13 11:33:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 11:33:39,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:39,300 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:39,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:33:39,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1117126507, now seen corresponding path program 1 times [2022-07-13 11:33:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:39,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165757967] [2022-07-13 11:33:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 11:33:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165757967] [2022-07-13 11:33:39,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165757967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:39,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:39,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:33:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838091365] [2022-07-13 11:33:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:33:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:33:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:33:39,527 INFO L87 Difference]: Start difference. First operand 4176 states and 6203 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:44,188 INFO L93 Difference]: Finished difference Result 4216 states and 6251 transitions. [2022-07-13 11:33:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:33:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-13 11:33:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:44,209 INFO L225 Difference]: With dead ends: 4216 [2022-07-13 11:33:44,210 INFO L226 Difference]: Without dead ends: 4207 [2022-07-13 11:33:44,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:33:44,212 INFO L413 NwaCegarLoop]: 2468 mSDtfsCounter, 6176 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 3655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 7907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3655 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:44,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 5142 Invalid, 7907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3655 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-13 11:33:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-07-13 11:33:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4176. [2022-07-13 11:33:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2902 states have (on average 1.3804272915230875) internal successors, (4006), 2980 states have internal predecessors, (4006), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-07-13 11:33:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6201 transitions. [2022-07-13 11:33:44,417 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6201 transitions. Word has length 42 [2022-07-13 11:33:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:44,418 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6201 transitions. [2022-07-13 11:33:44,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6201 transitions. [2022-07-13 11:33:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 11:33:44,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:44,421 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:44,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:33:44,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:44,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:44,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2075772706, now seen corresponding path program 1 times [2022-07-13 11:33:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:44,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110849642] [2022-07-13 11:33:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:44,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110849642] [2022-07-13 11:33:44,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110849642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:44,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:44,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:33:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369178863] [2022-07-13 11:33:44,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:44,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:33:44,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:33:44,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:44,588 INFO L87 Difference]: Start difference. First operand 4176 states and 6201 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:44,765 INFO L93 Difference]: Finished difference Result 6829 states and 10118 transitions. [2022-07-13 11:33:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:33:44,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-13 11:33:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:44,852 INFO L225 Difference]: With dead ends: 6829 [2022-07-13 11:33:44,852 INFO L226 Difference]: Without dead ends: 6526 [2022-07-13 11:33:44,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:44,856 INFO L413 NwaCegarLoop]: 3877 mSDtfsCounter, 2517 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 5767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:44,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 5767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:33:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2022-07-13 11:33:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 6445. [2022-07-13 11:33:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 4434 states have (on average 1.3813712223725756) internal successors, (6125), 4552 states have internal predecessors, (6125), 1726 states have call successors, (1726), 283 states have call predecessors, (1726), 284 states have return successors, (1757), 1678 states have call predecessors, (1757), 1713 states have call successors, (1757) [2022-07-13 11:33:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 9608 transitions. [2022-07-13 11:33:45,176 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 9608 transitions. Word has length 43 [2022-07-13 11:33:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:45,177 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 9608 transitions. [2022-07-13 11:33:45,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 9608 transitions. [2022-07-13 11:33:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 11:33:45,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:45,179 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:33:45,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 326032775, now seen corresponding path program 1 times [2022-07-13 11:33:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:45,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144465697] [2022-07-13 11:33:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:45,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 11:33:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:45,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:45,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144465697] [2022-07-13 11:33:45,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144465697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:45,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:45,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:33:45,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758240915] [2022-07-13 11:33:45,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:45,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:33:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:33:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:33:45,338 INFO L87 Difference]: Start difference. First operand 6445 states and 9608 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:48,303 INFO L93 Difference]: Finished difference Result 6473 states and 9642 transitions. [2022-07-13 11:33:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 11:33:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-13 11:33:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:48,333 INFO L225 Difference]: With dead ends: 6473 [2022-07-13 11:33:48,333 INFO L226 Difference]: Without dead ends: 6427 [2022-07-13 11:33:48,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:33:48,339 INFO L413 NwaCegarLoop]: 2334 mSDtfsCounter, 885 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 5566 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 11:33:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6427 states. [2022-07-13 11:33:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6427 to 6426. [2022-07-13 11:33:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 4421 states have (on average 1.381361682877177) internal successors, (6107), 4539 states have internal predecessors, (6107), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2022-07-13 11:33:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9578 transitions. [2022-07-13 11:33:48,686 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9578 transitions. Word has length 43 [2022-07-13 11:33:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:48,687 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9578 transitions. [2022-07-13 11:33:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:33:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9578 transitions. [2022-07-13 11:33:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 11:33:48,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:48,689 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:33:48,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1127454167, now seen corresponding path program 1 times [2022-07-13 11:33:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:48,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812237699] [2022-07-13 11:33:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:48,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:48,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812237699] [2022-07-13 11:33:48,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812237699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:48,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:48,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:33:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85042325] [2022-07-13 11:33:48,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:33:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:33:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:48,811 INFO L87 Difference]: Start difference. First operand 6426 states and 9578 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:33:49,022 INFO L93 Difference]: Finished difference Result 6429 states and 9580 transitions. [2022-07-13 11:33:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:33:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-13 11:33:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:33:49,046 INFO L225 Difference]: With dead ends: 6429 [2022-07-13 11:33:49,047 INFO L226 Difference]: Without dead ends: 6426 [2022-07-13 11:33:49,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:33:49,050 INFO L413 NwaCegarLoop]: 2588 mSDtfsCounter, 12 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:33:49,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5118 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:33:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6426 states. [2022-07-13 11:33:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6426. [2022-07-13 11:33:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 4421 states have (on average 1.3811354897082109) internal successors, (6106), 4539 states have internal predecessors, (6106), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2022-07-13 11:33:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9577 transitions. [2022-07-13 11:33:49,402 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9577 transitions. Word has length 43 [2022-07-13 11:33:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:33:49,403 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9577 transitions. [2022-07-13 11:33:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:33:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9577 transitions. [2022-07-13 11:33:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 11:33:49,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:33:49,405 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:33:49,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:33:49,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:33:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:33:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1697051292, now seen corresponding path program 1 times [2022-07-13 11:33:49,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:33:49,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676427549] [2022-07-13 11:33:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:33:49,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:33:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:49,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 11:33:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:33:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:33:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:33:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:33:49,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676427549] [2022-07-13 11:33:49,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676427549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:33:49,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:33:49,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:33:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889332058] [2022-07-13 11:33:49,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:33:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:33:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:33:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:33:49,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:33:49,617 INFO L87 Difference]: Start difference. First operand 6426 states and 9577 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:33:53,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:33:57,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:01,810 INFO L93 Difference]: Finished difference Result 13145 states and 19700 transitions. [2022-07-13 11:34:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:34:01,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-07-13 11:34:01,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:01,854 INFO L225 Difference]: With dead ends: 13145 [2022-07-13 11:34:01,855 INFO L226 Difference]: Without dead ends: 7299 [2022-07-13 11:34:01,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-13 11:34:01,876 INFO L413 NwaCegarLoop]: 2349 mSDtfsCounter, 680 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 9206 mSolverCounterSat, 498 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 11230 SdHoareTripleChecker+Invalid, 9706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 9206 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:01,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 11230 Invalid, 9706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 9206 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-07-13 11:34:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2022-07-13 11:34:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 6435. [2022-07-13 11:34:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6435 states, 4428 states have (on average 1.3805329719963866) internal successors, (6113), 4546 states have internal predecessors, (6113), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 286 states have return successors, (1756), 1674 states have call predecessors, (1756), 1707 states have call successors, (1756) [2022-07-13 11:34:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6435 states to 6435 states and 9589 transitions. [2022-07-13 11:34:02,292 INFO L78 Accepts]: Start accepts. Automaton has 6435 states and 9589 transitions. Word has length 46 [2022-07-13 11:34:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:02,293 INFO L495 AbstractCegarLoop]: Abstraction has 6435 states and 9589 transitions. [2022-07-13 11:34:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6435 states and 9589 transitions. [2022-07-13 11:34:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 11:34:02,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:02,295 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:02,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:34:02,296 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:02,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1485700379, now seen corresponding path program 1 times [2022-07-13 11:34:02,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:02,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954114762] [2022-07-13 11:34:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 11:34:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:34:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:02,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954114762] [2022-07-13 11:34:02,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954114762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:02,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:02,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:34:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958025237] [2022-07-13 11:34:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:34:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:34:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:34:02,471 INFO L87 Difference]: Start difference. First operand 6435 states and 9589 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:05,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:09,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:12,513 INFO L93 Difference]: Finished difference Result 12459 states and 18675 transitions. [2022-07-13 11:34:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:34:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-07-13 11:34:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:12,545 INFO L225 Difference]: With dead ends: 12459 [2022-07-13 11:34:12,545 INFO L226 Difference]: Without dead ends: 7261 [2022-07-13 11:34:12,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:34:12,564 INFO L413 NwaCegarLoop]: 2318 mSDtfsCounter, 643 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 5203 mSolverCounterSat, 496 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 5701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 5203 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:12,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 6988 Invalid, 5701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 5203 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-07-13 11:34:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-07-13 11:34:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6429. [2022-07-13 11:34:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6429 states, 4423 states have (on average 1.380510965408094) internal successors, (6106), 4541 states have internal predecessors, (6106), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2022-07-13 11:34:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 9579 transitions. [2022-07-13 11:34:12,941 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 9579 transitions. Word has length 46 [2022-07-13 11:34:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:12,942 INFO L495 AbstractCegarLoop]: Abstraction has 6429 states and 9579 transitions. [2022-07-13 11:34:12,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 9579 transitions. [2022-07-13 11:34:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 11:34:12,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:12,945 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:12,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:34:12,946 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:12,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1399500385, now seen corresponding path program 1 times [2022-07-13 11:34:12,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:12,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508981871] [2022-07-13 11:34:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:12,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:13,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:13,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508981871] [2022-07-13 11:34:13,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508981871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:13,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:13,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:34:13,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663840178] [2022-07-13 11:34:13,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:13,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:34:13,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:13,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:34:13,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:34:13,148 INFO L87 Difference]: Start difference. First operand 6429 states and 9579 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2022-07-13 11:34:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:13,420 INFO L93 Difference]: Finished difference Result 6521 states and 9703 transitions. [2022-07-13 11:34:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:34:13,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 45 [2022-07-13 11:34:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:13,444 INFO L225 Difference]: With dead ends: 6521 [2022-07-13 11:34:13,444 INFO L226 Difference]: Without dead ends: 6490 [2022-07-13 11:34:13,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:34:13,448 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 160 mSDsluCounter, 10441 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 13041 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:13,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 13041 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:34:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2022-07-13 11:34:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 6432. [2022-07-13 11:34:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6432 states, 4426 states have (on average 1.3802530501581562) internal successors, (6109), 4544 states have internal predecessors, (6109), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2022-07-13 11:34:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 9582 transitions. [2022-07-13 11:34:13,785 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 9582 transitions. Word has length 45 [2022-07-13 11:34:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:13,786 INFO L495 AbstractCegarLoop]: Abstraction has 6432 states and 9582 transitions. [2022-07-13 11:34:13,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2022-07-13 11:34:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 9582 transitions. [2022-07-13 11:34:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 11:34:13,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:13,787 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:13,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:34:13,788 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash 388874719, now seen corresponding path program 1 times [2022-07-13 11:34:13,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:13,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446018828] [2022-07-13 11:34:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:13,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:14,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:14,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446018828] [2022-07-13 11:34:14,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446018828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:14,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:14,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:34:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710763707] [2022-07-13 11:34:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:34:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:34:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:34:14,002 INFO L87 Difference]: Start difference. First operand 6432 states and 9582 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2022-07-13 11:34:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:14,317 INFO L93 Difference]: Finished difference Result 6517 states and 9696 transitions. [2022-07-13 11:34:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:34:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 45 [2022-07-13 11:34:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:14,345 INFO L225 Difference]: With dead ends: 6517 [2022-07-13 11:34:14,345 INFO L226 Difference]: Without dead ends: 6486 [2022-07-13 11:34:14,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:34:14,352 INFO L413 NwaCegarLoop]: 2619 mSDtfsCounter, 160 mSDsluCounter, 10485 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:14,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 13104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:34:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2022-07-13 11:34:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6425. [2022-07-13 11:34:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 4420 states have (on average 1.380316742081448) internal successors, (6101), 4537 states have internal predecessors, (6101), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2022-07-13 11:34:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9572 transitions. [2022-07-13 11:34:14,639 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9572 transitions. Word has length 45 [2022-07-13 11:34:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:14,640 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 9572 transitions. [2022-07-13 11:34:14,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2022-07-13 11:34:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9572 transitions. [2022-07-13 11:34:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 11:34:14,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:14,645 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:14,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:34:14,645 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:14,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:14,646 INFO L85 PathProgramCache]: Analyzing trace with hash 195220579, now seen corresponding path program 1 times [2022-07-13 11:34:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:14,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388510810] [2022-07-13 11:34:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 11:34:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:34:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:14,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:14,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388510810] [2022-07-13 11:34:14,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388510810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:14,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:14,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:34:14,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210478620] [2022-07-13 11:34:14,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:34:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:34:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:34:14,852 INFO L87 Difference]: Start difference. First operand 6425 states and 9572 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:34:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:20,929 INFO L93 Difference]: Finished difference Result 7285 states and 10963 transitions. [2022-07-13 11:34:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 11:34:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-07-13 11:34:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:20,959 INFO L225 Difference]: With dead ends: 7285 [2022-07-13 11:34:20,960 INFO L226 Difference]: Without dead ends: 7255 [2022-07-13 11:34:20,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:34:20,966 INFO L413 NwaCegarLoop]: 2194 mSDtfsCounter, 1663 mSDsluCounter, 6232 mSDsCounter, 0 mSdLazyCounter, 8972 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 8426 SdHoareTripleChecker+Invalid, 10235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 8972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:20,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 8426 Invalid, 10235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1263 Valid, 8972 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-13 11:34:20,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7255 states. [2022-07-13 11:34:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7255 to 6423. [2022-07-13 11:34:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 4419 states have (on average 1.3801765105227426) internal successors, (6099), 4536 states have internal predecessors, (6099), 1718 states have call successors, (1718), 283 states have call predecessors, (1718), 285 states have return successors, (1751), 1671 states have call predecessors, (1751), 1705 states have call successors, (1751) [2022-07-13 11:34:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9568 transitions. [2022-07-13 11:34:21,403 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9568 transitions. Word has length 47 [2022-07-13 11:34:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:21,403 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9568 transitions. [2022-07-13 11:34:21,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:34:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9568 transitions. [2022-07-13 11:34:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 11:34:21,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:21,405 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:21,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:34:21,405 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:21,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash 479588916, now seen corresponding path program 1 times [2022-07-13 11:34:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:21,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899709124] [2022-07-13 11:34:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:21,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 11:34:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:34:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:21,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:21,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899709124] [2022-07-13 11:34:21,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899709124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:21,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:21,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:34:21,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4441532] [2022-07-13 11:34:21,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:34:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:34:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:34:21,642 INFO L87 Difference]: Start difference. First operand 6423 states and 9568 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:24,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:28,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:34,530 INFO L93 Difference]: Finished difference Result 8481 states and 12866 transitions. [2022-07-13 11:34:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:34:34,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-07-13 11:34:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:34,560 INFO L225 Difference]: With dead ends: 8481 [2022-07-13 11:34:34,560 INFO L226 Difference]: Without dead ends: 8441 [2022-07-13 11:34:34,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:34:34,566 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 1077 mSDsluCounter, 11218 mSDsCounter, 0 mSdLazyCounter, 9626 mSolverCounterSat, 511 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 14028 SdHoareTripleChecker+Invalid, 10139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 9626 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:34,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 14028 Invalid, 10139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 9626 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-07-13 11:34:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2022-07-13 11:34:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 6423. [2022-07-13 11:34:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 4419 states have (on average 1.379950214980765) internal successors, (6098), 4536 states have internal predecessors, (6098), 1718 states have call successors, (1718), 283 states have call predecessors, (1718), 285 states have return successors, (1751), 1671 states have call predecessors, (1751), 1705 states have call successors, (1751) [2022-07-13 11:34:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9567 transitions. [2022-07-13 11:34:34,937 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9567 transitions. Word has length 50 [2022-07-13 11:34:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:34,937 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9567 transitions. [2022-07-13 11:34:34,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9567 transitions. [2022-07-13 11:34:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 11:34:34,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:34,939 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:34,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:34:34,940 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1998052607, now seen corresponding path program 1 times [2022-07-13 11:34:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:34,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574199389] [2022-07-13 11:34:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 11:34:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 11:34:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:35,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:35,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574199389] [2022-07-13 11:34:35,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574199389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:35,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:35,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 11:34:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686129754] [2022-07-13 11:34:35,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:35,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:34:35,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:34:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:34:35,185 INFO L87 Difference]: Start difference. First operand 6423 states and 9567 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:37,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:39,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:42,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:46,166 INFO L93 Difference]: Finished difference Result 7282 states and 10957 transitions. [2022-07-13 11:34:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:34:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-07-13 11:34:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:46,183 INFO L225 Difference]: With dead ends: 7282 [2022-07-13 11:34:46,184 INFO L226 Difference]: Without dead ends: 7252 [2022-07-13 11:34:46,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:34:46,186 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 1000 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 6266 mSolverCounterSat, 548 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 7014 SdHoareTripleChecker+Invalid, 6815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 6266 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:46,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 7014 Invalid, 6815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 6266 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-07-13 11:34:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2022-07-13 11:34:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 6420. [2022-07-13 11:34:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6420 states, 4417 states have (on average 1.3798958569164592) internal successors, (6095), 4534 states have internal predecessors, (6095), 1717 states have call successors, (1717), 283 states have call predecessors, (1717), 285 states have return successors, (1750), 1670 states have call predecessors, (1750), 1704 states have call successors, (1750) [2022-07-13 11:34:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 9562 transitions. [2022-07-13 11:34:46,533 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 9562 transitions. Word has length 53 [2022-07-13 11:34:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:46,533 INFO L495 AbstractCegarLoop]: Abstraction has 6420 states and 9562 transitions. [2022-07-13 11:34:46,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 9562 transitions. [2022-07-13 11:34:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 11:34:46,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:46,535 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:46,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:34:46,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1566112443, now seen corresponding path program 1 times [2022-07-13 11:34:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:46,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750427698] [2022-07-13 11:34:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 11:34:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:46,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 11:34:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:46,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:46,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750427698] [2022-07-13 11:34:46,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750427698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:46,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:46,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 11:34:46,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060374790] [2022-07-13 11:34:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:46,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:34:46,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:34:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:34:46,744 INFO L87 Difference]: Start difference. First operand 6420 states and 9562 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:34:51,608 INFO L93 Difference]: Finished difference Result 7279 states and 10952 transitions. [2022-07-13 11:34:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:34:51,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-07-13 11:34:51,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:34:51,629 INFO L225 Difference]: With dead ends: 7279 [2022-07-13 11:34:51,630 INFO L226 Difference]: Without dead ends: 7243 [2022-07-13 11:34:51,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:34:51,632 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 1624 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 6284 SdHoareTripleChecker+Invalid, 7086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:34:51,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 6284 Invalid, 7086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 11:34:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7243 states. [2022-07-13 11:34:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7243 to 6411. [2022-07-13 11:34:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 4411 states have (on average 1.379959192926774) internal successors, (6087), 4528 states have internal predecessors, (6087), 1715 states have call successors, (1715), 282 states have call predecessors, (1715), 284 states have return successors, (1748), 1668 states have call predecessors, (1748), 1702 states have call successors, (1748) [2022-07-13 11:34:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 9550 transitions. [2022-07-13 11:34:51,956 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 9550 transitions. Word has length 50 [2022-07-13 11:34:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:34:51,957 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 9550 transitions. [2022-07-13 11:34:51,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 9550 transitions. [2022-07-13 11:34:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 11:34:51,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:34:51,959 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:34:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:34:51,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:34:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:34:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2113042750, now seen corresponding path program 1 times [2022-07-13 11:34:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:34:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880663919] [2022-07-13 11:34:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:34:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:34:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 11:34:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:34:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:34:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:34:52,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:34:52,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880663919] [2022-07-13 11:34:52,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880663919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:34:52,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:34:52,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:34:52,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367185958] [2022-07-13 11:34:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:34:52,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:34:52,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:34:52,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:34:52,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:34:52,222 INFO L87 Difference]: Start difference. First operand 6411 states and 9550 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:34:55,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:34:57,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:01,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:35:06,748 INFO L93 Difference]: Finished difference Result 7402 states and 11115 transitions. [2022-07-13 11:35:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:35:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-07-13 11:35:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:35:06,765 INFO L225 Difference]: With dead ends: 7402 [2022-07-13 11:35:06,765 INFO L226 Difference]: Without dead ends: 7308 [2022-07-13 11:35:06,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:35:06,767 INFO L413 NwaCegarLoop]: 2565 mSDtfsCounter, 835 mSDsluCounter, 9908 mSDsCounter, 0 mSdLazyCounter, 9489 mSolverCounterSat, 508 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 12473 SdHoareTripleChecker+Invalid, 10000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 9489 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:35:06,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 12473 Invalid, 10000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 9489 Invalid, 3 Unknown, 0 Unchecked, 14.2s Time] [2022-07-13 11:35:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2022-07-13 11:35:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 6419. [2022-07-13 11:35:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6419 states, 4417 states have (on average 1.3796694589087617) internal successors, (6094), 4536 states have internal predecessors, (6094), 1717 states have call successors, (1717), 282 states have call predecessors, (1717), 284 states have return successors, (1750), 1670 states have call predecessors, (1750), 1704 states have call successors, (1750) [2022-07-13 11:35:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 9561 transitions. [2022-07-13 11:35:07,121 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 9561 transitions. Word has length 54 [2022-07-13 11:35:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:35:07,121 INFO L495 AbstractCegarLoop]: Abstraction has 6419 states and 9561 transitions. [2022-07-13 11:35:07,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 11:35:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 9561 transitions. [2022-07-13 11:35:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:35:07,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:35:07,124 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:35:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:35:07,124 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:35:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:35:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1879920607, now seen corresponding path program 1 times [2022-07-13 11:35:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:35:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911632983] [2022-07-13 11:35:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:35:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:35:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 11:35:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 11:35:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:35:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:35:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911632983] [2022-07-13 11:35:07,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911632983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:35:07,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:35:07,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 11:35:07,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875792532] [2022-07-13 11:35:07,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:35:07,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 11:35:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:35:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 11:35:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:35:07,376 INFO L87 Difference]: Start difference. First operand 6419 states and 9561 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:35:09,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:11,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:16,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:35:19,786 INFO L93 Difference]: Finished difference Result 12075 states and 18069 transitions. [2022-07-13 11:35:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:35:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-07-13 11:35:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:35:19,806 INFO L225 Difference]: With dead ends: 12075 [2022-07-13 11:35:19,806 INFO L226 Difference]: Without dead ends: 7123 [2022-07-13 11:35:19,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:35:19,824 INFO L413 NwaCegarLoop]: 2207 mSDtfsCounter, 1011 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 7823 mSolverCounterSat, 542 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 8008 SdHoareTripleChecker+Invalid, 8367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 7823 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:35:19,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 8008 Invalid, 8367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 7823 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-07-13 11:35:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2022-07-13 11:35:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6265. [2022-07-13 11:35:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6265 states, 4302 states have (on average 1.3772663877266387) internal successors, (5925), 4406 states have internal predecessors, (5925), 1686 states have call successors, (1686), 270 states have call predecessors, (1686), 276 states have return successors, (1704), 1658 states have call predecessors, (1704), 1676 states have call successors, (1704) [2022-07-13 11:35:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 9315 transitions. [2022-07-13 11:35:20,149 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 9315 transitions. Word has length 58 [2022-07-13 11:35:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:35:20,150 INFO L495 AbstractCegarLoop]: Abstraction has 6265 states and 9315 transitions. [2022-07-13 11:35:20,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 11:35:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 9315 transitions. [2022-07-13 11:35:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 11:35:20,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:35:20,153 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:35:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:35:20,153 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:35:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:35:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1760545175, now seen corresponding path program 1 times [2022-07-13 11:35:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:35:20,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061050508] [2022-07-13 11:35:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:35:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:35:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 11:35:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:35:20,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:35:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061050508] [2022-07-13 11:35:20,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061050508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:35:20,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:35:20,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:35:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039178781] [2022-07-13 11:35:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:35:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:35:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:35:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:35:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:35:20,354 INFO L87 Difference]: Start difference. First operand 6265 states and 9315 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:35:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:35:26,882 INFO L93 Difference]: Finished difference Result 7124 states and 10703 transitions. [2022-07-13 11:35:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 11:35:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2022-07-13 11:35:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:35:26,901 INFO L225 Difference]: With dead ends: 7124 [2022-07-13 11:35:26,901 INFO L226 Difference]: Without dead ends: 7094 [2022-07-13 11:35:26,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:35:26,904 INFO L413 NwaCegarLoop]: 2189 mSDtfsCounter, 1643 mSDsluCounter, 6117 mSDsCounter, 0 mSdLazyCounter, 9019 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 8306 SdHoareTripleChecker+Invalid, 10260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 9019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:35:26,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 8306 Invalid, 10260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 9019 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-13 11:35:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-07-13 11:35:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 6263. [2022-07-13 11:35:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 4301 states have (on average 1.3771215996279935) internal successors, (5923), 4405 states have internal predecessors, (5923), 1685 states have call successors, (1685), 270 states have call predecessors, (1685), 276 states have return successors, (1703), 1657 states have call predecessors, (1703), 1675 states have call successors, (1703) [2022-07-13 11:35:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 9311 transitions. [2022-07-13 11:35:27,256 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 9311 transitions. Word has length 55 [2022-07-13 11:35:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:35:27,256 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 9311 transitions. [2022-07-13 11:35:27,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 11:35:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 9311 transitions. [2022-07-13 11:35:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 11:35:27,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:35:27,259 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:35:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:35:27,259 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:35:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:35:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash 460730707, now seen corresponding path program 1 times [2022-07-13 11:35:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:35:27,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684889842] [2022-07-13 11:35:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:35:27,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:35:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:27,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 11:35:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 11:35:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:35:27,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:35:27,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684889842] [2022-07-13 11:35:27,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684889842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:35:27,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:35:27,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 11:35:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893794560] [2022-07-13 11:35:27,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:35:27,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 11:35:27,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:35:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 11:35:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:35:27,429 INFO L87 Difference]: Start difference. First operand 6263 states and 9311 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:35:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:35:32,571 INFO L93 Difference]: Finished difference Result 6408 states and 9506 transitions. [2022-07-13 11:35:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 11:35:32,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-13 11:35:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:35:32,583 INFO L225 Difference]: With dead ends: 6408 [2022-07-13 11:35:32,583 INFO L226 Difference]: Without dead ends: 6367 [2022-07-13 11:35:32,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:35:32,585 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 915 mSDsluCounter, 6594 mSDsCounter, 0 mSdLazyCounter, 7763 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 8910 SdHoareTripleChecker+Invalid, 8207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 7763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:35:32,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 8910 Invalid, 8207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 7763 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-13 11:35:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-07-13 11:35:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6268. [2022-07-13 11:35:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6268 states, 4305 states have (on average 1.3767711962833915) internal successors, (5927), 4408 states have internal predecessors, (5927), 1685 states have call successors, (1685), 270 states have call predecessors, (1685), 277 states have return successors, (1704), 1659 states have call predecessors, (1704), 1675 states have call successors, (1704) [2022-07-13 11:35:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 9316 transitions. [2022-07-13 11:35:32,833 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 9316 transitions. Word has length 56 [2022-07-13 11:35:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:35:32,833 INFO L495 AbstractCegarLoop]: Abstraction has 6268 states and 9316 transitions. [2022-07-13 11:35:32,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:35:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 9316 transitions. [2022-07-13 11:35:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 11:35:32,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:35:32,835 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:35:32,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:35:32,835 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:35:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:35:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1153832404, now seen corresponding path program 1 times [2022-07-13 11:35:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:35:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755637601] [2022-07-13 11:35:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:35:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:35:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 11:35:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 11:35:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:35:32,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:35:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755637601] [2022-07-13 11:35:32,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755637601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:35:32,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:35:32,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:35:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894738410] [2022-07-13 11:35:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:35:32,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:35:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:35:32,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:35:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:35:32,991 INFO L87 Difference]: Start difference. First operand 6268 states and 9316 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:35:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:35:36,724 INFO L93 Difference]: Finished difference Result 6296 states and 9350 transitions. [2022-07-13 11:35:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:35:36,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-13 11:35:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:35:36,739 INFO L225 Difference]: With dead ends: 6296 [2022-07-13 11:35:36,739 INFO L226 Difference]: Without dead ends: 6266 [2022-07-13 11:35:36,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:35:36,741 INFO L413 NwaCegarLoop]: 2297 mSDtfsCounter, 906 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 5261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:35:36,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 6498 Invalid, 5261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 11:35:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2022-07-13 11:35:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6261. [2022-07-13 11:35:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 4300 states have (on average 1.3769767441860465) internal successors, (5921), 4404 states have internal predecessors, (5921), 1684 states have call successors, (1684), 270 states have call predecessors, (1684), 276 states have return successors, (1702), 1656 states have call predecessors, (1702), 1674 states have call successors, (1702) [2022-07-13 11:35:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9307 transitions. [2022-07-13 11:35:36,999 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9307 transitions. Word has length 56 [2022-07-13 11:35:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:35:36,999 INFO L495 AbstractCegarLoop]: Abstraction has 6261 states and 9307 transitions. [2022-07-13 11:35:36,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 11:35:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9307 transitions. [2022-07-13 11:35:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 11:35:37,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:35:37,001 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:35:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:35:37,001 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:35:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:35:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1964601087, now seen corresponding path program 1 times [2022-07-13 11:35:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:35:37,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553967523] [2022-07-13 11:35:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:35:37,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:35:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:37,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 11:35:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:35:37,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:35:37,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553967523] [2022-07-13 11:35:37,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553967523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:35:37,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:35:37,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 11:35:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531221900] [2022-07-13 11:35:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:35:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 11:35:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:35:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 11:35:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:35:37,210 INFO L87 Difference]: Start difference. First operand 6261 states and 9307 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:35:40,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:42,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:47,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:35:52,164 INFO L93 Difference]: Finished difference Result 7021 states and 10475 transitions. [2022-07-13 11:35:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 11:35:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-13 11:35:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:35:52,179 INFO L225 Difference]: With dead ends: 7021 [2022-07-13 11:35:52,180 INFO L226 Difference]: Without dead ends: 6934 [2022-07-13 11:35:52,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-07-13 11:35:52,181 INFO L413 NwaCegarLoop]: 2231 mSDtfsCounter, 3663 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 8474 mSolverCounterSat, 2271 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 10747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2271 IncrementalHoareTripleChecker+Valid, 8474 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:35:52,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3819 Valid, 6467 Invalid, 10747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2271 Valid, 8474 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-07-13 11:35:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2022-07-13 11:35:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6307. [2022-07-13 11:35:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 4336 states have (on average 1.3763837638376384) internal successors, (5968), 4441 states have internal predecessors, (5968), 1688 states have call successors, (1688), 275 states have call predecessors, (1688), 282 states have return successors, (1706), 1660 states have call predecessors, (1706), 1678 states have call successors, (1706) [2022-07-13 11:35:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 9362 transitions. [2022-07-13 11:35:52,474 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 9362 transitions. Word has length 55 [2022-07-13 11:35:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:35:52,474 INFO L495 AbstractCegarLoop]: Abstraction has 6307 states and 9362 transitions. [2022-07-13 11:35:52,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:35:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 9362 transitions. [2022-07-13 11:35:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 11:35:52,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:35:52,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-13 11:35:52,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:35:52,477 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:35:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:35:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 565116710, now seen corresponding path program 1 times [2022-07-13 11:35:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:35:52,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897722822] [2022-07-13 11:35:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:35:52,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:35:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 11:35:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 11:35:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:35:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 11:35:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:35:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:35:52,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:35:52,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897722822] [2022-07-13 11:35:52,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897722822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:35:52,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:35:52,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 11:35:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359216612] [2022-07-13 11:35:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:35:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 11:35:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:35:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 11:35:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 11:35:52,734 INFO L87 Difference]: Start difference. First operand 6307 states and 9362 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 11:35:54,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:35:56,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:01,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:36:01,866 INFO L93 Difference]: Finished difference Result 7174 states and 10698 transitions. [2022-07-13 11:36:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:36:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 69 [2022-07-13 11:36:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:36:01,879 INFO L225 Difference]: With dead ends: 7174 [2022-07-13 11:36:01,879 INFO L226 Difference]: Without dead ends: 6181 [2022-07-13 11:36:01,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:36:01,882 INFO L413 NwaCegarLoop]: 2200 mSDtfsCounter, 1652 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 7398 mSolverCounterSat, 1274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 7331 SdHoareTripleChecker+Invalid, 8673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1274 IncrementalHoareTripleChecker+Valid, 7398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:36:01,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 7331 Invalid, 8673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1274 Valid, 7398 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-07-13 11:36:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-07-13 11:36:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 5431. [2022-07-13 11:36:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 3770 states have (on average 1.3755968169761272) internal successors, (5186), 3858 states have internal predecessors, (5186), 1418 states have call successors, (1418), 235 states have call predecessors, (1418), 242 states have return successors, (1436), 1395 states have call predecessors, (1436), 1408 states have call successors, (1436) [2022-07-13 11:36:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 8040 transitions. [2022-07-13 11:36:02,138 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 8040 transitions. Word has length 69 [2022-07-13 11:36:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:36:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 5431 states and 8040 transitions. [2022-07-13 11:36:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 11:36:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 8040 transitions. [2022-07-13 11:36:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 11:36:02,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:36:02,141 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:36:02,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:36:02,142 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:36:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:36:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -823060444, now seen corresponding path program 1 times [2022-07-13 11:36:02,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:36:02,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666183432] [2022-07-13 11:36:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:36:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:36:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 11:36:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:36:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:36:02,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666183432] [2022-07-13 11:36:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666183432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:36:02,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:36:02,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:36:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628110240] [2022-07-13 11:36:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:36:02,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:36:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:36:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:36:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:36:02,280 INFO L87 Difference]: Start difference. First operand 5431 states and 8040 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:03,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:05,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:09,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:12,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:36:17,129 INFO L93 Difference]: Finished difference Result 7296 states and 10890 transitions. [2022-07-13 11:36:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 11:36:17,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-07-13 11:36:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:36:17,143 INFO L225 Difference]: With dead ends: 7296 [2022-07-13 11:36:17,143 INFO L226 Difference]: Without dead ends: 7283 [2022-07-13 11:36:17,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:36:17,145 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 1993 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 1126 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 5838 SdHoareTripleChecker+Invalid, 4575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:36:17,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 5838 Invalid, 4575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 3447 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-07-13 11:36:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7283 states. [2022-07-13 11:36:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7283 to 5516. [2022-07-13 11:36:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 3843 states have (on average 1.3702836325787144) internal successors, (5266), 3921 states have internal predecessors, (5266), 1422 states have call successors, (1422), 239 states have call predecessors, (1422), 250 states have return successors, (1455), 1414 states have call predecessors, (1455), 1412 states have call successors, (1455) [2022-07-13 11:36:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 8143 transitions. [2022-07-13 11:36:17,415 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 8143 transitions. Word has length 57 [2022-07-13 11:36:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:36:17,415 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 8143 transitions. [2022-07-13 11:36:17,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 8143 transitions. [2022-07-13 11:36:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 11:36:17,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:36:17,417 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:36:17,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:36:17,417 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:36:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:36:17,418 INFO L85 PathProgramCache]: Analyzing trace with hash -966339802, now seen corresponding path program 1 times [2022-07-13 11:36:17,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:36:17,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572993557] [2022-07-13 11:36:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:36:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:36:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 11:36:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:36:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:36:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572993557] [2022-07-13 11:36:17,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572993557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:36:17,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:36:17,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 11:36:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207365753] [2022-07-13 11:36:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:36:17,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:36:17,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:36:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:36:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:36:17,607 INFO L87 Difference]: Start difference. First operand 5516 states and 8143 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:36:22,661 INFO L93 Difference]: Finished difference Result 6087 states and 9038 transitions. [2022-07-13 11:36:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:36:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-07-13 11:36:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:36:22,675 INFO L225 Difference]: With dead ends: 6087 [2022-07-13 11:36:22,675 INFO L226 Difference]: Without dead ends: 5932 [2022-07-13 11:36:22,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:36:22,677 INFO L413 NwaCegarLoop]: 2153 mSDtfsCounter, 3483 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 4502 mSolverCounterSat, 2194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 6696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 4502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:36:22,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 4791 Invalid, 6696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 4502 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 11:36:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-07-13 11:36:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5419. [2022-07-13 11:36:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 3756 states have (on average 1.3772630457933972) internal successors, (5173), 3856 states have internal predecessors, (5173), 1419 states have call successors, (1419), 238 states have call predecessors, (1419), 243 states have return successors, (1424), 1383 states have call predecessors, (1424), 1409 states have call successors, (1424) [2022-07-13 11:36:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 8016 transitions. [2022-07-13 11:36:22,998 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 8016 transitions. Word has length 57 [2022-07-13 11:36:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:36:22,998 INFO L495 AbstractCegarLoop]: Abstraction has 5419 states and 8016 transitions. [2022-07-13 11:36:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 8016 transitions. [2022-07-13 11:36:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 11:36:23,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:36:23,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-13 11:36:23,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 11:36:23,001 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:36:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:36:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1271877099, now seen corresponding path program 1 times [2022-07-13 11:36:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:36:23,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242983350] [2022-07-13 11:36:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:36:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:36:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 11:36:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:36:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 11:36:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 11:36:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 11:36:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 11:36:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:36:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:36:23,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242983350] [2022-07-13 11:36:23,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242983350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:36:23,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:36:23,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:36:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010964950] [2022-07-13 11:36:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:36:23,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:36:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:36:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:36:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:36:23,255 INFO L87 Difference]: Start difference. First operand 5419 states and 8016 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 11:36:27,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:33,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:35,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:36:39,430 INFO L93 Difference]: Finished difference Result 6203 states and 9254 transitions. [2022-07-13 11:36:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 11:36:39,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-07-13 11:36:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:36:39,445 INFO L225 Difference]: With dead ends: 6203 [2022-07-13 11:36:39,446 INFO L226 Difference]: Without dead ends: 6150 [2022-07-13 11:36:39,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:36:39,448 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1046 mSDsluCounter, 6366 mSDsCounter, 0 mSdLazyCounter, 8791 mSolverCounterSat, 547 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 8580 SdHoareTripleChecker+Invalid, 9340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 8791 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:36:39,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 8580 Invalid, 9340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 8791 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2022-07-13 11:36:39,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2022-07-13 11:36:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 5406. [2022-07-13 11:36:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 3748 states have (on average 1.3775346851654215) internal successors, (5163), 3847 states have internal predecessors, (5163), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1421), 1381 states have call predecessors, (1421), 1406 states have call successors, (1421) [2022-07-13 11:36:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 8000 transitions. [2022-07-13 11:36:39,751 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 8000 transitions. Word has length 63 [2022-07-13 11:36:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:36:39,752 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 8000 transitions. [2022-07-13 11:36:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-13 11:36:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 8000 transitions. [2022-07-13 11:36:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:36:39,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:36:39,754 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:36:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 11:36:39,754 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:36:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:36:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 707742519, now seen corresponding path program 1 times [2022-07-13 11:36:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:36:39,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802709711] [2022-07-13 11:36:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:36:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:36:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 11:36:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:36:39,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:36:39,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802709711] [2022-07-13 11:36:39,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802709711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:36:39,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:36:39,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 11:36:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396885905] [2022-07-13 11:36:39,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:36:39,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 11:36:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:36:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 11:36:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:36:39,927 INFO L87 Difference]: Start difference. First operand 5406 states and 8000 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:43,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:47,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:36:52,327 INFO L93 Difference]: Finished difference Result 5940 states and 8856 transitions. [2022-07-13 11:36:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:36:52,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-07-13 11:36:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:36:52,341 INFO L225 Difference]: With dead ends: 5940 [2022-07-13 11:36:52,341 INFO L226 Difference]: Without dead ends: 5936 [2022-07-13 11:36:52,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:36:52,343 INFO L413 NwaCegarLoop]: 2273 mSDtfsCounter, 634 mSDsluCounter, 8970 mSDsCounter, 0 mSdLazyCounter, 8408 mSolverCounterSat, 483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 11243 SdHoareTripleChecker+Invalid, 8892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 8408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:36:52,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 11243 Invalid, 8892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 8408 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-07-13 11:36:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2022-07-13 11:36:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 5427. [2022-07-13 11:36:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 3767 states have (on average 1.3769577913458986) internal successors, (5187), 3867 states have internal predecessors, (5187), 1418 states have call successors, (1418), 236 states have call predecessors, (1418), 241 states have return successors, (1423), 1383 states have call predecessors, (1423), 1408 states have call successors, (1423) [2022-07-13 11:36:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 8028 transitions. [2022-07-13 11:36:52,646 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 8028 transitions. Word has length 58 [2022-07-13 11:36:52,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:36:52,646 INFO L495 AbstractCegarLoop]: Abstraction has 5427 states and 8028 transitions. [2022-07-13 11:36:52,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 8028 transitions. [2022-07-13 11:36:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:36:52,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:36:52,648 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-13 11:36:52,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:36:52,648 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:36:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:36:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash 707465689, now seen corresponding path program 1 times [2022-07-13 11:36:52,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:36:52,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913039057] [2022-07-13 11:36:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:36:52,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:36:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 11:36:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:36:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 11:36:52,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:36:52,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913039057] [2022-07-13 11:36:52,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913039057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:36:52,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:36:52,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 11:36:52,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472007499] [2022-07-13 11:36:52,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:36:52,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:36:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:36:52,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:36:52,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:36:52,809 INFO L87 Difference]: Start difference. First operand 5427 states and 8028 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 11:36:55,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:36:57,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:02,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []