./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 ae007674 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-dev-ae00767 [2021-12-27 21:56:21,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:56:21,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:56:21,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:56:21,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:56:21,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:56:21,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:56:21,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:56:21,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:56:21,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:56:21,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:56:21,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:56:21,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:56:21,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:56:21,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:56:21,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:56:21,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:56:21,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:56:21,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:56:21,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:56:21,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:56:21,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:56:21,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:56:21,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:56:21,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:56:21,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:56:21,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:56:21,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:56:21,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:56:21,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:56:21,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:56:21,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:56:21,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:56:21,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:56:21,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:56:21,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:56:21,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:56:21,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:56:21,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:56:21,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:56:21,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:56:21,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:56:21,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:56:21,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:56:21,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:56:21,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:56:21,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:56:21,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:56:21,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:56:21,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:56:21,792 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:56:21,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:56:21,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:56:21,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:56:21,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:56:21,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:56:21,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:56:21,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:56:21,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:56:21,794 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:56:21,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:56:21,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:56:21,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:56:21,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:56:21,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:56:21,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:56:21,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:56:21,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:56:21,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:56:21,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:56:21,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:56:21,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:56:21,796 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:56:21,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:56:21,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:56:21,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2021-12-27 21:56:22,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:56:22,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:56:22,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:56:22,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:56:22,054 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:56:22,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2021-12-27 21:56:22,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cc9f1c4/5fd5df0cbb8246ad9ab11f32dc5b9557/FLAG8ecd36168 [2021-12-27 21:56:22,651 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:56:22,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2021-12-27 21:56:22,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cc9f1c4/5fd5df0cbb8246ad9ab11f32dc5b9557/FLAG8ecd36168 [2021-12-27 21:56:22,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cc9f1c4/5fd5df0cbb8246ad9ab11f32dc5b9557 [2021-12-27 21:56:22,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:56:22,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:56:22,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:56:22,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:56:22,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:56:22,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:56:22" (1/1) ... [2021-12-27 21:56:22,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4aef28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:22, skipping insertion in model container [2021-12-27 21:56:22,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:56:22" (1/1) ... [2021-12-27 21:56:22,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:56:22,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:56:23,523 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] [2021-12-27 21:56:24,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:56:24,083 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:56:24,145 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] [2021-12-27 21:56:24,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:56:24,453 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:56:24,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24 WrapperNode [2021-12-27 21:56:24,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:56:24,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:56:24,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:56:24,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:56:24,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,691 INFO L137 Inliner]: procedures = 248, calls = 2334, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4663 [2021-12-27 21:56:24,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:56:24,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:56:24,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:56:24,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:56:24,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:56:24,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:56:24,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:56:24,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:56:24,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (1/1) ... [2021-12-27 21:56:24,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:56:24,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:56:24,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 21:56:25,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 21:56:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2021-12-27 21:56:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2021-12-27 21:56:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2021-12-27 21:56:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2021-12-27 21:56:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2021-12-27 21:56:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2021-12-27 21:56:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2021-12-27 21:56:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2021-12-27 21:56:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2021-12-27 21:56:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2021-12-27 21:56:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-27 21:56:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-27 21:56:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2021-12-27 21:56:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2021-12-27 21:56:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2021-12-27 21:56:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2021-12-27 21:56:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2021-12-27 21:56:25,024 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2021-12-27 21:56:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-27 21:56:25,024 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-27 21:56:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2021-12-27 21:56:25,024 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2021-12-27 21:56:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-27 21:56:25,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-27 21:56:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-27 21:56:25,025 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-27 21:56:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2021-12-27 21:56:25,025 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2021-12-27 21:56:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2021-12-27 21:56:25,025 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2021-12-27 21:56:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 21:56:25,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2021-12-27 21:56:25,026 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2021-12-27 21:56:25,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2021-12-27 21:56:25,026 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2021-12-27 21:56:25,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-27 21:56:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2021-12-27 21:56:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2021-12-27 21:56:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2021-12-27 21:56:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2021-12-27 21:56:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2021-12-27 21:56:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2021-12-27 21:56:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2021-12-27 21:56:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2021-12-27 21:56:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 21:56:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-27 21:56:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2021-12-27 21:56:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2021-12-27 21:56:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2021-12-27 21:56:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2021-12-27 21:56:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2021-12-27 21:56:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2021-12-27 21:56:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-27 21:56:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-27 21:56:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2021-12-27 21:56:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2021-12-27 21:56:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2021-12-27 21:56:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2021-12-27 21:56:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2021-12-27 21:56:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2021-12-27 21:56:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-27 21:56:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2021-12-27 21:56:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2021-12-27 21:56:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2021-12-27 21:56:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2021-12-27 21:56:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2021-12-27 21:56:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2021-12-27 21:56:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2021-12-27 21:56:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2021-12-27 21:56:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-27 21:56:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2021-12-27 21:56:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2021-12-27 21:56:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 21:56:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2021-12-27 21:56:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2021-12-27 21:56:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2021-12-27 21:56:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2021-12-27 21:56:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2021-12-27 21:56:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2021-12-27 21:56:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2021-12-27 21:56:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2021-12-27 21:56:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-27 21:56:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-27 21:56:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-27 21:56:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-27 21:56:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2021-12-27 21:56:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2021-12-27 21:56:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2021-12-27 21:56:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2021-12-27 21:56:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2021-12-27 21:56:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2021-12-27 21:56:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2021-12-27 21:56:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2021-12-27 21:56:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-27 21:56:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-27 21:56:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2021-12-27 21:56:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2021-12-27 21:56:25,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 21:56:25,047 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2021-12-27 21:56:25,047 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2021-12-27 21:56:25,047 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2021-12-27 21:56:25,048 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2021-12-27 21:56:25,048 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2021-12-27 21:56:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2021-12-27 21:56:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:56:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2021-12-27 21:56:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2021-12-27 21:56:25,051 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2021-12-27 21:56:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2021-12-27 21:56:25,051 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-27 21:56:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-27 21:56:25,051 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-12-27 21:56:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-12-27 21:56:25,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:56:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:56:25,616 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:56:25,618 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:56:25,666 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:25,722 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-12-27 21:56:25,722 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-12-27 21:56:25,726 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:25,781 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-12-27 21:56:25,781 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-12-27 21:56:26,123 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,192 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-12-27 21:56:26,192 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-12-27 21:56:26,445 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-27 21:56:26,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-27 21:56:26,527 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-12-27 21:56:26,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-12-27 21:56:26,611 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-27 21:56:26,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-27 21:56:26,617 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,629 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-12-27 21:56:26,630 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-12-27 21:56:26,630 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2021-12-27 21:56:26,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2021-12-27 21:56:26,797 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,798 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,799 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,799 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,799 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,800 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,804 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,804 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,806 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,807 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,808 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:26,808 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-27 21:56:34,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2021-12-27 21:56:34,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2021-12-27 21:56:34,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume false; [2021-12-27 21:56:34,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !false; [2021-12-27 21:56:34,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##477: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##476: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##531: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##530: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##520: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##576: assume !false; [2021-12-27 21:56:34,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##575: assume false; [2021-12-27 21:56:34,374 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2021-12-27 21:56:34,413 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:56:34,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:56:34,425 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-12-27 21:56:34,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:56:34 BoogieIcfgContainer [2021-12-27 21:56:34,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:56:34,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:56:34,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:56:34,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:56:34,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:56:22" (1/3) ... [2021-12-27 21:56:34,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c3afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:56:34, skipping insertion in model container [2021-12-27 21:56:34,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:56:24" (2/3) ... [2021-12-27 21:56:34,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c3afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:56:34, skipping insertion in model container [2021-12-27 21:56:34,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:56:34" (3/3) ... [2021-12-27 21:56:34,434 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2021-12-27 21:56:34,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:56:34,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:56:34,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:56:34,478 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 21:56:34,478 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:56:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 1728 states, 1203 states have (on average 1.4638403990024937) internal successors, (1761), 1252 states have internal predecessors, (1761), 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) [2021-12-27 21:56:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-27 21:56:34,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:34,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:34,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1747724696, now seen corresponding path program 1 times [2021-12-27 21:56:34,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:34,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250461573] [2021-12-27 21:56:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:34,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:34,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:34,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250461573] [2021-12-27 21:56:34,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250461573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:34,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:34,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 21:56:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888222165] [2021-12-27 21:56:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:34,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 21:56:34,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:34,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 21:56:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 21:56:34,918 INFO L87 Difference]: Start difference. First operand has 1728 states, 1203 states have (on average 1.4638403990024937) internal successors, (1761), 1252 states have internal predecessors, (1761), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2021-12-27 21:56:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:35,061 INFO L93 Difference]: Finished difference Result 3450 states and 5434 transitions. [2021-12-27 21:56:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 21:56:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 [2021-12-27 21:56:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:35,089 INFO L225 Difference]: With dead ends: 3450 [2021-12-27 21:56:35,089 INFO L226 Difference]: Without dead ends: 1721 [2021-12-27 21:56:35,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 21:56:35,107 INFO L933 BasicCegarLoop]: 2577 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:35,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:56:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-12-27 21:56:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1721. [2021-12-27 21:56:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1198 states have (on average 1.3998330550918197) internal successors, (1677), 1245 states have internal predecessors, (1677), 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) [2021-12-27 21:56:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2564 transitions. [2021-12-27 21:56:35,258 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2564 transitions. Word has length 15 [2021-12-27 21:56:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:35,259 INFO L470 AbstractCegarLoop]: Abstraction has 1721 states and 2564 transitions. [2021-12-27 21:56:35,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2021-12-27 21:56:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2564 transitions. [2021-12-27 21:56:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-27 21:56:35,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:35,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:35,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:56:35,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash 12693346, now seen corresponding path program 1 times [2021-12-27 21:56:35,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:35,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804066038] [2021-12-27 21:56:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:35,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:35,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:35,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804066038] [2021-12-27 21:56:35,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804066038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:35,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:35,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:56:35,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549285121] [2021-12-27 21:56:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:35,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:56:35,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:56:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:35,387 INFO L87 Difference]: Start difference. First operand 1721 states and 2564 transitions. 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) [2021-12-27 21:56:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:35,484 INFO L93 Difference]: Finished difference Result 3440 states and 5126 transitions. [2021-12-27 21:56:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:56:35,485 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 [2021-12-27 21:56:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:35,496 INFO L225 Difference]: With dead ends: 3440 [2021-12-27 21:56:35,496 INFO L226 Difference]: Without dead ends: 1723 [2021-12-27 21:56:35,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:35,557 INFO L933 BasicCegarLoop]: 2562 mSDtfsCounter, 1 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5122 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 [2021-12-27 21:56:35,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 5122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:56:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2021-12-27 21:56:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1722. [2021-12-27 21:56:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1199 states have (on average 1.3994995829858214) internal successors, (1678), 1246 states have internal predecessors, (1678), 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) [2021-12-27 21:56:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2565 transitions. [2021-12-27 21:56:35,618 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2565 transitions. Word has length 15 [2021-12-27 21:56:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:35,618 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 2565 transitions. [2021-12-27 21:56:35,618 INFO L471 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) [2021-12-27 21:56:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2565 transitions. [2021-12-27 21:56:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 21:56:35,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:35,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:35,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 21:56:35,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash 25759584, now seen corresponding path program 1 times [2021-12-27 21:56:35,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:35,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121825417] [2021-12-27 21:56:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:35,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:35,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121825417] [2021-12-27 21:56:35,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121825417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:56:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163340350] [2021-12-27 21:56:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:35,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:56:35,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:56:35,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:56:35,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 21:56:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:36,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 21:56:36,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:56:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-27 21:56:36,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 21:56:36,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163340350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:36,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 21:56:36,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-27 21:56:36,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986228328] [2021-12-27 21:56:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:36,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:56:36,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:56:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 21:56:36,343 INFO L87 Difference]: Start difference. First operand 1722 states and 2565 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) [2021-12-27 21:56:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:36,410 INFO L93 Difference]: Finished difference Result 1792 states and 2653 transitions. [2021-12-27 21:56:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:56:36,410 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 [2021-12-27 21:56:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:36,418 INFO L225 Difference]: With dead ends: 1792 [2021-12-27 21:56:36,418 INFO L226 Difference]: Without dead ends: 1773 [2021-12-27 21:56:36,419 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:36,420 INFO L933 BasicCegarLoop]: 2562 mSDtfsCounter, 2542 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2626 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 [2021-12-27 21:56:36,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2542 Valid, 2626 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:56:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2021-12-27 21:56:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1764. [2021-12-27 21:56:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1233 states have (on average 1.3965936739659368) internal successors, (1722), 1282 states have internal predecessors, (1722), 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) [2021-12-27 21:56:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2617 transitions. [2021-12-27 21:56:36,477 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2617 transitions. Word has length 17 [2021-12-27 21:56:36,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:36,478 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 2617 transitions. [2021-12-27 21:56:36,478 INFO L471 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) [2021-12-27 21:56:36,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2617 transitions. [2021-12-27 21:56:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 21:56:36,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:36,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:36,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-27 21:56:36,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:56:36,700 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash 11414675, now seen corresponding path program 1 times [2021-12-27 21:56:36,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:36,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757214582] [2021-12-27 21:56:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:36,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:36,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757214582] [2021-12-27 21:56:36,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757214582] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:56:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214031542] [2021-12-27 21:56:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:36,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:56:36,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:56:36,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:56:36,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 21:56:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:37,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 21:56:37,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:56:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-27 21:56:37,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 21:56:37,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214031542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:37,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-27 21:56:37,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-27 21:56:37,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684578554] [2021-12-27 21:56:37,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:37,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:56:37,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:56:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 21:56:37,353 INFO L87 Difference]: Start difference. First operand 1764 states and 2617 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) [2021-12-27 21:56:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:37,504 INFO L93 Difference]: Finished difference Result 1780 states and 2636 transitions. [2021-12-27 21:56:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:56:37,505 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 [2021-12-27 21:56:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:37,512 INFO L225 Difference]: With dead ends: 1780 [2021-12-27 21:56:37,512 INFO L226 Difference]: Without dead ends: 1764 [2021-12-27 21:56:37,513 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:37,514 INFO L933 BasicCegarLoop]: 2564 mSDtfsCounter, 0 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5071 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 [2021-12-27 21:56:37,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5071 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:56:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-12-27 21:56:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1764. [2021-12-27 21:56:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1233 states have (on average 1.3957826439578265) internal successors, (1721), 1282 states have internal predecessors, (1721), 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) [2021-12-27 21:56:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2616 transitions. [2021-12-27 21:56:37,574 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2616 transitions. Word has length 17 [2021-12-27 21:56:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:37,575 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 2616 transitions. [2021-12-27 21:56:37,575 INFO L471 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) [2021-12-27 21:56:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2616 transitions. [2021-12-27 21:56:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-27 21:56:37,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:37,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:37,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-27 21:56:37,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-27 21:56:37,796 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash -478438479, now seen corresponding path program 1 times [2021-12-27 21:56:37,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:37,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964040203] [2021-12-27 21:56:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:37,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:37,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:37,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964040203] [2021-12-27 21:56:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964040203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:56:37,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188459289] [2021-12-27 21:56:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:37,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:56:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:56:37,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:56:37,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 21:56:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:38,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 21:56:38,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:56:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:38,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:56:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:56:38,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188459289] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:56:38,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:56:38,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-27 21:56:38,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634200236] [2021-12-27 21:56:38,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:56:38,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-27 21:56:38,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-27 21:56:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:56:38,465 INFO L87 Difference]: Start difference. First operand 1764 states and 2616 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, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:56:38,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:38,577 INFO L93 Difference]: Finished difference Result 3529 states and 5235 transitions. [2021-12-27 21:56:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 21:56:38,578 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, (3), 1 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 22 [2021-12-27 21:56:38,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:38,587 INFO L225 Difference]: With dead ends: 3529 [2021-12-27 21:56:38,588 INFO L226 Difference]: Without dead ends: 1770 [2021-12-27 21:56:38,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:56:38,594 INFO L933 BasicCegarLoop]: 2561 mSDtfsCounter, 6 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7679 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:38,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7679 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:56:38,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-12-27 21:56:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1770. [2021-12-27 21:56:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1239 states have (on average 1.393866020984665) internal successors, (1727), 1288 states have internal predecessors, (1727), 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) [2021-12-27 21:56:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2622 transitions. [2021-12-27 21:56:38,678 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2622 transitions. Word has length 22 [2021-12-27 21:56:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:38,678 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2622 transitions. [2021-12-27 21:56:38,678 INFO L471 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, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:56:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2622 transitions. [2021-12-27 21:56:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-27 21:56:38,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:38,682 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:56:38,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-27 21:56:38,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:56:38,887 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 307295479, now seen corresponding path program 2 times [2021-12-27 21:56:38,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:38,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429019415] [2021-12-27 21:56:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:39,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429019415] [2021-12-27 21:56:39,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429019415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:39,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:39,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:56:39,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361268246] [2021-12-27 21:56:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:39,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:56:39,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:56:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:39,041 INFO L87 Difference]: Start difference. First operand 1770 states and 2622 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, (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) [2021-12-27 21:56:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:39,320 INFO L93 Difference]: Finished difference Result 4499 states and 6726 transitions. [2021-12-27 21:56:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:56:39,321 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, (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 28 [2021-12-27 21:56:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:39,335 INFO L225 Difference]: With dead ends: 4499 [2021-12-27 21:56:39,335 INFO L226 Difference]: Without dead ends: 3330 [2021-12-27 21:56:39,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:39,340 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 2447 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 6810 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 [2021-12-27 21:56:39,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 6810 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-27 21:56:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2021-12-27 21:56:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3299. [2021-12-27 21:56:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2308 states have (on average 1.389948006932409) internal successors, (3208), 2376 states have internal predecessors, (3208), 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) [2021-12-27 21:56:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4928 transitions. [2021-12-27 21:56:39,446 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4928 transitions. Word has length 28 [2021-12-27 21:56:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:39,447 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4928 transitions. [2021-12-27 21:56:39,447 INFO L471 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, (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) [2021-12-27 21:56:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4928 transitions. [2021-12-27 21:56:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-27 21:56:39,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:39,449 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:39,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-27 21:56:39,449 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:39,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1796297636, now seen corresponding path program 1 times [2021-12-27 21:56:39,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:39,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015160971] [2021-12-27 21:56:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:39,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:39,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-27 21:56:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:39,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:39,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015160971] [2021-12-27 21:56:39,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015160971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:39,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:39,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 21:56:39,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114395331] [2021-12-27 21:56:39,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:39,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 21:56:39,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 21:56:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:56:39,592 INFO L87 Difference]: Start difference. First operand 3299 states and 4928 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) [2021-12-27 21:56:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:42,738 INFO L93 Difference]: Finished difference Result 4067 states and 6046 transitions. [2021-12-27 21:56:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-27 21:56:42,738 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 [2021-12-27 21:56:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:42,758 INFO L225 Difference]: With dead ends: 4067 [2021-12-27 21:56:42,758 INFO L226 Difference]: Without dead ends: 4062 [2021-12-27 21:56:42,761 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:42,762 INFO L933 BasicCegarLoop]: 2387 mSDtfsCounter, 2299 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 3760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:42,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2623 Valid, 4333 Invalid, 3760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-27 21:56:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-12-27 21:56:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4033. [2021-12-27 21:56:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.3794853207683944) internal successors, (3806), 2837 states have internal predecessors, (3806), 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) [2021-12-27 21:56:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 6001 transitions. [2021-12-27 21:56:42,938 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 6001 transitions. Word has length 40 [2021-12-27 21:56:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:42,938 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 6001 transitions. [2021-12-27 21:56:42,939 INFO L471 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) [2021-12-27 21:56:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 6001 transitions. [2021-12-27 21:56:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-27 21:56:42,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:42,943 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:42,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-27 21:56:42,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash 601875904, now seen corresponding path program 1 times [2021-12-27 21:56:42,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:42,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79218658] [2021-12-27 21:56:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:42,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-27 21:56:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:43,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:43,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79218658] [2021-12-27 21:56:43,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79218658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:43,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:43,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-27 21:56:43,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868366417] [2021-12-27 21:56:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:43,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 21:56:43,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 21:56:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 21:56:43,130 INFO L87 Difference]: Start difference. First operand 4033 states and 6001 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) [2021-12-27 21:56:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:47,531 INFO L93 Difference]: Finished difference Result 4080 states and 6058 transitions. [2021-12-27 21:56:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-27 21:56:47,535 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 [2021-12-27 21:56:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:47,552 INFO L225 Difference]: With dead ends: 4080 [2021-12-27 21:56:47,552 INFO L226 Difference]: Without dead ends: 4071 [2021-12-27 21:56:47,554 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:47,555 INFO L933 BasicCegarLoop]: 2364 mSDtfsCounter, 5840 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 4137 mSolverCounterSat, 3677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5972 SdHoareTripleChecker+Valid, 5006 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3677 IncrementalHoareTripleChecker+Valid, 4137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:47,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5972 Valid, 5006 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3677 Valid, 4137 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-27 21:56:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-12-27 21:56:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4033. [2021-12-27 21:56:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.3787604204421893) internal successors, (3804), 2837 states have internal predecessors, (3804), 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) [2021-12-27 21:56:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5999 transitions. [2021-12-27 21:56:47,711 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5999 transitions. Word has length 41 [2021-12-27 21:56:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:47,712 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 5999 transitions. [2021-12-27 21:56:47,712 INFO L471 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) [2021-12-27 21:56:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5999 transitions. [2021-12-27 21:56:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-27 21:56:47,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:47,713 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-27 21:56:47,714 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 588958024, now seen corresponding path program 1 times [2021-12-27 21:56:47,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:47,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886468019] [2021-12-27 21:56:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:47,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-27 21:56:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:47,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:47,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886468019] [2021-12-27 21:56:47,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886468019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:47,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:47,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-27 21:56:47,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084524734] [2021-12-27 21:56:47,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:47,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 21:56:47,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 21:56:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 21:56:47,855 INFO L87 Difference]: Start difference. First operand 4033 states and 5999 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) [2021-12-27 21:56:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:52,064 INFO L93 Difference]: Finished difference Result 4073 states and 6047 transitions. [2021-12-27 21:56:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-27 21:56:52,065 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 [2021-12-27 21:56:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:52,081 INFO L225 Difference]: With dead ends: 4073 [2021-12-27 21:56:52,081 INFO L226 Difference]: Without dead ends: 4064 [2021-12-27 21:56:52,083 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:52,083 INFO L933 BasicCegarLoop]: 2364 mSDtfsCounter, 5829 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 4132 mSolverCounterSat, 3675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5961 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 7807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3675 IncrementalHoareTripleChecker+Valid, 4132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:52,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5961 Valid, 5001 Invalid, 7807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3675 Valid, 4132 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-27 21:56:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-12-27 21:56:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 4033. [2021-12-27 21:56:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.378035520115984) internal successors, (3802), 2837 states have internal predecessors, (3802), 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) [2021-12-27 21:56:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5997 transitions. [2021-12-27 21:56:52,237 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5997 transitions. Word has length 42 [2021-12-27 21:56:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:52,238 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 5997 transitions. [2021-12-27 21:56:52,239 INFO L471 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) [2021-12-27 21:56:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5997 transitions. [2021-12-27 21:56:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-27 21:56:52,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:52,240 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:52,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-27 21:56:52,241 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1278856833, now seen corresponding path program 1 times [2021-12-27 21:56:52,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:52,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621198018] [2021-12-27 21:56:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:52,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:52,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:52,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621198018] [2021-12-27 21:56:52,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621198018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:52,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:52,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:56:52,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158157402] [2021-12-27 21:56:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:52,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:56:52,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:56:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:52,396 INFO L87 Difference]: Start difference. First operand 4033 states and 5997 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) [2021-12-27 21:56:52,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:52,517 INFO L93 Difference]: Finished difference Result 6594 states and 9782 transitions. [2021-12-27 21:56:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:56:52,517 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 [2021-12-27 21:56:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:52,553 INFO L225 Difference]: With dead ends: 6594 [2021-12-27 21:56:52,554 INFO L226 Difference]: Without dead ends: 6291 [2021-12-27 21:56:52,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:52,559 INFO L933 BasicCegarLoop]: 3631 mSDtfsCounter, 2445 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 5455 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 [2021-12-27 21:56:52,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2445 Valid, 5455 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:56:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2021-12-27 21:56:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6210. [2021-12-27 21:56:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4199 states have (on average 1.3786615860919267) internal successors, (5789), 4317 states have internal predecessors, (5789), 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) [2021-12-27 21:56:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9272 transitions. [2021-12-27 21:56:52,831 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9272 transitions. Word has length 43 [2021-12-27 21:56:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:52,832 INFO L470 AbstractCegarLoop]: Abstraction has 6210 states and 9272 transitions. [2021-12-27 21:56:52,832 INFO L471 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) [2021-12-27 21:56:52,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9272 transitions. [2021-12-27 21:56:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-27 21:56:52,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:52,834 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:52,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-27 21:56:52,834 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:52,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1132671081, now seen corresponding path program 1 times [2021-12-27 21:56:52,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:52,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662939524] [2021-12-27 21:56:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:52,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-27 21:56:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:52,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:52,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662939524] [2021-12-27 21:56:52,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662939524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:52,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:52,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-27 21:56:52,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377653965] [2021-12-27 21:56:52,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:52,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 21:56:52,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 21:56:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-27 21:56:52,949 INFO L87 Difference]: Start difference. First operand 6210 states and 9272 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) [2021-12-27 21:56:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:55,657 INFO L93 Difference]: Finished difference Result 6238 states and 9306 transitions. [2021-12-27 21:56:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-27 21:56:55,657 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 [2021-12-27 21:56:55,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:55,680 INFO L225 Difference]: With dead ends: 6238 [2021-12-27 21:56:55,681 INFO L226 Difference]: Without dead ends: 6192 [2021-12-27 21:56:55,686 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:55,686 INFO L933 BasicCegarLoop]: 2262 mSDtfsCounter, 825 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-27 21:56:55,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 5458 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-27 21:56:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-12-27 21:56:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 6191. [2021-12-27 21:56:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4186 states have (on average 1.3786430960344003) internal successors, (5771), 4304 states have internal predecessors, (5771), 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) [2021-12-27 21:56:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9242 transitions. [2021-12-27 21:56:55,948 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9242 transitions. Word has length 43 [2021-12-27 21:56:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:55,949 INFO L470 AbstractCegarLoop]: Abstraction has 6191 states and 9242 transitions. [2021-12-27 21:56:55,949 INFO L471 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) [2021-12-27 21:56:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9242 transitions. [2021-12-27 21:56:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-27 21:56:55,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:55,950 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:55,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-27 21:56:55,950 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash -323587381, now seen corresponding path program 1 times [2021-12-27 21:56:55,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916554433] [2021-12-27 21:56:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:55,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:56,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:56,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916554433] [2021-12-27 21:56:56,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916554433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:56,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:56,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:56:56,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800702346] [2021-12-27 21:56:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:56,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:56:56,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:56:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:56:56,058 INFO L87 Difference]: Start difference. First operand 6191 states and 9242 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) [2021-12-27 21:56:56,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:56:56,262 INFO L93 Difference]: Finished difference Result 6194 states and 9244 transitions. [2021-12-27 21:56:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:56:56,262 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 [2021-12-27 21:56:56,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:56:56,281 INFO L225 Difference]: With dead ends: 6194 [2021-12-27 21:56:56,281 INFO L226 Difference]: Without dead ends: 6191 [2021-12-27 21:56:56,286 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:56:56,286 INFO L933 BasicCegarLoop]: 2516 mSDtfsCounter, 12 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4974 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 [2021-12-27 21:56:56,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4974 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:56:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2021-12-27 21:56:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6191. [2021-12-27 21:56:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4186 states have (on average 1.378404204491161) internal successors, (5770), 4304 states have internal predecessors, (5770), 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) [2021-12-27 21:56:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9241 transitions. [2021-12-27 21:56:56,556 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9241 transitions. Word has length 43 [2021-12-27 21:56:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:56:56,557 INFO L470 AbstractCegarLoop]: Abstraction has 6191 states and 9241 transitions. [2021-12-27 21:56:56,557 INFO L471 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) [2021-12-27 21:56:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9241 transitions. [2021-12-27 21:56:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-27 21:56:56,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:56:56,558 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:56:56,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-27 21:56:56,559 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:56:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:56:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2052618280, now seen corresponding path program 1 times [2021-12-27 21:56:56,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:56:56,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643253386] [2021-12-27 21:56:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:56:56,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:56:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-27 21:56:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 21:56:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:56:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:56:56,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:56:56,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643253386] [2021-12-27 21:56:56,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643253386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:56:56,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:56:56,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-27 21:56:56,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230449032] [2021-12-27 21:56:56,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:56:56,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-27 21:56:56,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:56:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-27 21:56:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-27 21:56:56,733 INFO L87 Difference]: Start difference. First operand 6191 states and 9241 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) [2021-12-27 21:57:00,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:03,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:07,852 INFO L93 Difference]: Finished difference Result 12680 states and 19034 transitions. [2021-12-27 21:57:07,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-27 21:57:07,859 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 [2021-12-27 21:57:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:07,879 INFO L225 Difference]: With dead ends: 12680 [2021-12-27 21:57:07,879 INFO L226 Difference]: Without dead ends: 7064 [2021-12-27 21:57:07,896 INFO L932 BasicCegarLoop]: 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 [2021-12-27 21:57:07,897 INFO L933 BasicCegarLoop]: 2272 mSDtfsCounter, 625 mSDsluCounter, 8742 mSDsCounter, 0 mSdLazyCounter, 8866 mSolverCounterSat, 499 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 11014 SdHoareTripleChecker+Invalid, 9367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 8866 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:07,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 11014 Invalid, 9367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 8866 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-12-27 21:57:07,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2021-12-27 21:57:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 6200. [2021-12-27 21:57:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 4193 states have (on average 1.377772477939423) internal successors, (5777), 4311 states have internal predecessors, (5777), 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) [2021-12-27 21:57:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 9253 transitions. [2021-12-27 21:57:08,153 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 9253 transitions. Word has length 46 [2021-12-27 21:57:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:08,155 INFO L470 AbstractCegarLoop]: Abstraction has 6200 states and 9253 transitions. [2021-12-27 21:57:08,155 INFO L471 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) [2021-12-27 21:57:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 9253 transitions. [2021-12-27 21:57:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-27 21:57:08,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:08,157 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:57:08,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-27 21:57:08,158 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1841267367, now seen corresponding path program 1 times [2021-12-27 21:57:08,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:08,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378286467] [2021-12-27 21:57:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:08,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-27 21:57:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 21:57:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:57:08,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:08,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378286467] [2021-12-27 21:57:08,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378286467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:08,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:08,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-27 21:57:08,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41393308] [2021-12-27 21:57:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:08,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-27 21:57:08,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-27 21:57:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:57:08,289 INFO L87 Difference]: Start difference. First operand 6200 states and 9253 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 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) [2021-12-27 21:57:11,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:15,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 21:57:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:18,900 INFO L93 Difference]: Finished difference Result 7096 states and 10689 transitions. [2021-12-27 21:57:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-27 21:57:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 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 [2021-12-27 21:57:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:18,923 INFO L225 Difference]: With dead ends: 7096 [2021-12-27 21:57:18,923 INFO L226 Difference]: Without dead ends: 7057 [2021-12-27 21:57:18,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-27 21:57:18,928 INFO L933 BasicCegarLoop]: 2259 mSDtfsCounter, 621 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 6311 mSolverCounterSat, 499 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 8234 SdHoareTripleChecker+Invalid, 6812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 6311 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:18,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 8234 Invalid, 6812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 6311 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-12-27 21:57:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2021-12-27 21:57:19,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 6194. [2021-12-27 21:57:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6194 states, 4188 states have (on average 1.377984718242598) internal successors, (5771), 4306 states have internal predecessors, (5771), 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) [2021-12-27 21:57:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 9244 transitions. [2021-12-27 21:57:19,225 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 9244 transitions. Word has length 46 [2021-12-27 21:57:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:19,225 INFO L470 AbstractCegarLoop]: Abstraction has 6194 states and 9244 transitions. [2021-12-27 21:57:19,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 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) [2021-12-27 21:57:19,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 9244 transitions. [2021-12-27 21:57:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-27 21:57:19,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:19,227 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:57:19,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-27 21:57:19,228 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103344, now seen corresponding path program 1 times [2021-12-27 21:57:19,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:19,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195512680] [2021-12-27 21:57:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:19,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:57:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-27 21:57:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-27 21:57:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:57:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:57:19,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:57:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195512680] [2021-12-27 21:57:19,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195512680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:57:19,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:57:19,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-27 21:57:19,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477156350] [2021-12-27 21:57:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:57:19,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-27 21:57:19,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:57:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-27 21:57:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-27 21:57:19,382 INFO L87 Difference]: Start difference. First operand 6194 states and 9244 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) [2021-12-27 21:57:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:57:24,735 INFO L93 Difference]: Finished difference Result 7054 states and 10635 transitions. [2021-12-27 21:57:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-27 21:57:24,740 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 [2021-12-27 21:57:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:57:24,762 INFO L225 Difference]: With dead ends: 7054 [2021-12-27 21:57:24,763 INFO L226 Difference]: Without dead ends: 7024 [2021-12-27 21:57:24,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-27 21:57:24,769 INFO L933 BasicCegarLoop]: 2150 mSDtfsCounter, 1552 mSDsluCounter, 6297 mSDsCounter, 0 mSdLazyCounter, 8648 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 8447 SdHoareTripleChecker+Invalid, 9911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 8648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:57:24,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1860 Valid, 8447 Invalid, 9911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1263 Valid, 8648 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-27 21:57:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2021-12-27 21:57:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6192. [2021-12-27 21:57:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 4187 states have (on average 1.3778361595414377) internal successors, (5769), 4305 states have internal predecessors, (5769), 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) [2021-12-27 21:57:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9240 transitions. [2021-12-27 21:57:25,048 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9240 transitions. Word has length 47 [2021-12-27 21:57:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:57:25,049 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 9240 transitions. [2021-12-27 21:57:25,049 INFO L471 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) [2021-12-27 21:57:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9240 transitions. [2021-12-27 21:57:25,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-27 21:57:25,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:57:25,050 INFO L514 BasicCegarLoop]: 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] [2021-12-27 21:57:25,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-27 21:57:25,050 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:57:25,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:57:25,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1404767676, now seen corresponding path program 1 times [2021-12-27 21:57:25,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:57:25,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828680519] [2021-12-27 21:57:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:57:25,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms