./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 791161d1 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-?-791161d [2022-07-22 11:11:17,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:11:17,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:11:17,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:11:17,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:11:17,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:11:17,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:11:17,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:11:17,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:11:17,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:11:17,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:11:17,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:11:17,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:11:17,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:11:17,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:11:17,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:11:17,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:11:17,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:11:17,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:11:17,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:11:17,799 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:11:17,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:11:17,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:11:17,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:11:17,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:11:17,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:11:17,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:11:17,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:11:17,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:11:17,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:11:17,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:11:17,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:11:17,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:11:17,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:11:17,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:11:17,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:11:17,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:11:17,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:11:17,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:11:17,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:11:17,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:11:17,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:11:17,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 11:11:17,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:11:17,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:11:17,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:11:17,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:11:17,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:11:17,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:11:17,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:11:17,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:11:17,838 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:11:17,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:11:17,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:11:17,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 11:11:17,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:11:17,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:11:17,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:11:17,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:11:17,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:11:17,839 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:11:17,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:11:17,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:11:17,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:11:17,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:11:17,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:11:17,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:11:17,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:11:17,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:11:17,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:11:17,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:11:17,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 11:11:17,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 11:11:17,842 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:11:17,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:11:17,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:11:17,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2022-07-22 11:11:18,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:11:18,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:11:18,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:11:18,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:11:18,089 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:11:18,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-07-22 11:11:18,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b78fc45/f2b156bdc38f4c0983ed8e0c1357c96a/FLAGff8716f73 [2022-07-22 11:11:18,819 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:11:18,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-07-22 11:11:18,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b78fc45/f2b156bdc38f4c0983ed8e0c1357c96a/FLAGff8716f73 [2022-07-22 11:11:18,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b78fc45/f2b156bdc38f4c0983ed8e0c1357c96a [2022-07-22 11:11:18,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:11:18,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:11:18,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:11:18,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:11:18,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:11:18,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:11:18" (1/1) ... [2022-07-22 11:11:18,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3265d855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:18, skipping insertion in model container [2022-07-22 11:11:18,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:11:18" (1/1) ... [2022-07-22 11:11:18,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:11:19,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:11:19,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c[86591,86604] [2022-07-22 11:11:20,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:11:20,426 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:11:20,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c[86591,86604] [2022-07-22 11:11:20,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:11:20,809 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:11:20,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20 WrapperNode [2022-07-22 11:11:20,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:11:20,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:11:20,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:11:20,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:11:20,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:20,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,040 INFO L137 Inliner]: procedures = 248, calls = 2334, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4784 [2022-07-22 11:11:21,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:11:21,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:11:21,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:11:21,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:11:21,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:11:21,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:11:21,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:11:21,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:11:21,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (1/1) ... [2022-07-22 11:11:21,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:11:21,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:11:21,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 11:11:21,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 11:11:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-07-22 11:11:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-07-22 11:11:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-07-22 11:11:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-07-22 11:11:21,402 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-07-22 11:11:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-07-22 11:11:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-07-22 11:11:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-07-22 11:11:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-07-22 11:11:21,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-07-22 11:11:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 11:11:21,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 11:11:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-07-22 11:11:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-07-22 11:11:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-07-22 11:11:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-07-22 11:11:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-07-22 11:11:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-07-22 11:11:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 11:11:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 11:11:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-07-22 11:11:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-07-22 11:11:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 11:11:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 11:11:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-22 11:11:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-22 11:11:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-07-22 11:11:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-07-22 11:11:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-07-22 11:11:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-07-22 11:11:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 11:11:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-07-22 11:11:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-07-22 11:11:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-07-22 11:11:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-07-22 11:11:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 11:11:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-07-22 11:11:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-07-22 11:11:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-07-22 11:11:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-07-22 11:11:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-07-22 11:11:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-07-22 11:11:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-07-22 11:11:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-07-22 11:11:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 11:11:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 11:11:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-07-22 11:11:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-07-22 11:11:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-07-22 11:11:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-07-22 11:11:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-07-22 11:11:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-07-22 11:11:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-22 11:11:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-22 11:11:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-07-22 11:11:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-07-22 11:11:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-07-22 11:11:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-07-22 11:11:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-07-22 11:11:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-07-22 11:11:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 11:11:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-07-22 11:11:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-07-22 11:11:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-07-22 11:11:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-07-22 11:11:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-07-22 11:11:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-07-22 11:11:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-07-22 11:11:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-07-22 11:11:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 11:11:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-07-22 11:11:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-07-22 11:11:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 11:11:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-07-22 11:11:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-07-22 11:11:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-07-22 11:11:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-07-22 11:11:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-07-22 11:11:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-07-22 11:11:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-07-22 11:11:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-07-22 11:11:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-22 11:11:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-22 11:11:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 11:11:21,416 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 11:11:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-07-22 11:11:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-07-22 11:11:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-07-22 11:11:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-07-22 11:11:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-07-22 11:11:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-07-22 11:11:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-07-22 11:11:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-07-22 11:11:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-22 11:11:21,419 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-22 11:11:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-07-22 11:11:21,419 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-07-22 11:11:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 11:11:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-07-22 11:11:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-07-22 11:11:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-07-22 11:11:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-07-22 11:11:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-07-22 11:11:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-07-22 11:11:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 11:11:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-07-22 11:11:21,421 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-07-22 11:11:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-07-22 11:11:21,421 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-07-22 11:11:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:11:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-07-22 11:11:21,422 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-07-22 11:11:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-07-22 11:11:21,422 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-07-22 11:11:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-07-22 11:11:21,423 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-07-22 11:11:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 11:11:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-22 11:11:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-22 11:11:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-07-22 11:11:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-07-22 11:11:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-07-22 11:11:21,427 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-07-22 11:11:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-07-22 11:11:21,428 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-07-22 11:11:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-07-22 11:11:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-07-22 11:11:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-07-22 11:11:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-07-22 11:11:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-07-22 11:11:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-07-22 11:11:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-07-22 11:11:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-07-22 11:11:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-07-22 11:11:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-07-22 11:11:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-07-22 11:11:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-07-22 11:11:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-07-22 11:11:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-07-22 11:11:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-07-22 11:11:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-07-22 11:11:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-07-22 11:11:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-07-22 11:11:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-07-22 11:11:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-07-22 11:11:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 11:11:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-07-22 11:11:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-07-22 11:11:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-07-22 11:11:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-07-22 11:11:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-07-22 11:11:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-07-22 11:11:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-07-22 11:11:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-07-22 11:11:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:11:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:11:22,174 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:11:22,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:11:22,234 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:22,273 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-07-22 11:11:22,274 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-07-22 11:11:22,278 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:22,328 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-07-22 11:11:22,328 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-07-22 11:11:22,685 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:22,745 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-07-22 11:11:22,746 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-07-22 11:11:23,101 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,105 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-22 11:11:23,105 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-22 11:11:23,213 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,236 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-07-22 11:11:23,236 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-07-22 11:11:23,322 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,327 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-22 11:11:23,327 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-22 11:11:23,328 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,347 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-07-22 11:11:23,347 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-07-22 11:11:23,348 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,384 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-07-22 11:11:23,384 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-07-22 11:11:23,711 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,713 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,714 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,715 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,715 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,718 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,742 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,743 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,747 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,764 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,765 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:23,767 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##386: assume false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##387: assume !false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##425: assume !false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##424: assume false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##489: assume !false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##488: assume false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##533: assume !false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##532: assume false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##543: assume !false; [2022-07-22 11:11:32,159 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##542: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2022-07-22 11:11:32,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##588: assume !false; [2022-07-22 11:11:32,161 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##587: assume false; [2022-07-22 11:11:32,240 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:11:32,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:11:32,270 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2022-07-22 11:11:32,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:11:32 BoogieIcfgContainer [2022-07-22 11:11:32,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:11:32,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:11:32,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:11:32,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:11:32,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:11:18" (1/3) ... [2022-07-22 11:11:32,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b50832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:11:32, skipping insertion in model container [2022-07-22 11:11:32,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:11:20" (2/3) ... [2022-07-22 11:11:32,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b50832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:11:32, skipping insertion in model container [2022-07-22 11:11:32,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:11:32" (3/3) ... [2022-07-22 11:11:32,291 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-07-22 11:11:32,307 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:11:32,307 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:11:32,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:11:32,408 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b2534e8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b0ca6bc [2022-07-22 11:11:32,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:11:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 1779 states, 1254 states have (on average 1.4832535885167464) internal successors, (1860), 1303 states have internal predecessors, (1860), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) [2022-07-22 11:11:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 11:11:32,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:32,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:32,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:32,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash -773300714, now seen corresponding path program 1 times [2022-07-22 11:11:32,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:32,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880191208] [2022-07-22 11:11:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:32,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:11:32,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:32,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880191208] [2022-07-22 11:11:32,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880191208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:32,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:32,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:11:32,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946393040] [2022-07-22 11:11:32,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:11:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:32,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:11:32,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:32,899 INFO L87 Difference]: Start difference. First operand has 1779 states, 1254 states have (on average 1.4832535885167464) internal successors, (1860), 1303 states have internal predecessors, (1860), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:33,139 INFO L93 Difference]: Finished difference Result 3554 states and 5647 transitions. [2022-07-22 11:11:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:11:33,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-22 11:11:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:33,171 INFO L225 Difference]: With dead ends: 3554 [2022-07-22 11:11:33,172 INFO L226 Difference]: Without dead ends: 1774 [2022-07-22 11:11:33,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:33,190 INFO L413 NwaCegarLoop]: 2647 mSDtfsCounter, 1 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5292 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:33,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5292 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:11:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-07-22 11:11:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1773. [2022-07-22 11:11:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1250 states have (on average 1.4) internal successors, (1750), 1297 states have internal predecessors, (1750), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2022-07-22 11:11:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2637 transitions. [2022-07-22 11:11:33,368 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2637 transitions. Word has length 15 [2022-07-22 11:11:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:33,368 INFO L495 AbstractCegarLoop]: Abstraction has 1773 states and 2637 transitions. [2022-07-22 11:11:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2637 transitions. [2022-07-22 11:11:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 11:11:33,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:33,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:33,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 11:11:33,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 971741108, now seen corresponding path program 1 times [2022-07-22 11:11:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704066577] [2022-07-22 11:11:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:11:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:33,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704066577] [2022-07-22 11:11:33,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704066577] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:11:33,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444153820] [2022-07-22 11:11:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:11:33,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:11:33,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:11:33,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 11:11:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:34,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:11:34,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:11:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 11:11:34,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:11:34,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444153820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:34,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:11:34,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 11:11:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023458546] [2022-07-22 11:11:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:11:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:11:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:11:34,189 INFO L87 Difference]: Start difference. First operand 1773 states and 2637 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:34,281 INFO L93 Difference]: Finished difference Result 1843 states and 2725 transitions. [2022-07-22 11:11:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:11:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-22 11:11:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:34,296 INFO L225 Difference]: With dead ends: 1843 [2022-07-22 11:11:34,296 INFO L226 Difference]: Without dead ends: 1824 [2022-07-22 11:11:34,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:11:34,299 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 2614 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:34,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 2698 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:11:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-07-22 11:11:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1815. [2022-07-22 11:11:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1284 states have (on average 1.397196261682243) internal successors, (1794), 1333 states have internal predecessors, (1794), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-07-22 11:11:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2689 transitions. [2022-07-22 11:11:34,376 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2689 transitions. Word has length 17 [2022-07-22 11:11:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:34,377 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2689 transitions. [2022-07-22 11:11:34,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2689 transitions. [2022-07-22 11:11:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 11:11:34,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:34,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:34,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 11:11:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:11:34,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 957396199, now seen corresponding path program 1 times [2022-07-22 11:11:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:34,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872060928] [2022-07-22 11:11:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:11:34,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872060928] [2022-07-22 11:11:34,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872060928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:11:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676114527] [2022-07-22 11:11:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:34,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:11:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:11:34,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:11:34,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 11:11:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:35,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 11:11:35,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:11:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 11:11:35,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:11:35,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676114527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:35,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:11:35,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 11:11:35,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903298067] [2022-07-22 11:11:35,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:35,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:11:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:11:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:11:35,329 INFO L87 Difference]: Start difference. First operand 1815 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:35,479 INFO L93 Difference]: Finished difference Result 1831 states and 2708 transitions. [2022-07-22 11:11:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:11:35,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-22 11:11:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:35,491 INFO L225 Difference]: With dead ends: 1831 [2022-07-22 11:11:35,491 INFO L226 Difference]: Without dead ends: 1815 [2022-07-22 11:11:35,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:11:35,496 INFO L413 NwaCegarLoop]: 2636 mSDtfsCounter, 0 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5215 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:35,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5215 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:11:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-07-22 11:11:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1815. [2022-07-22 11:11:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1284 states have (on average 1.396417445482866) internal successors, (1793), 1333 states have internal predecessors, (1793), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-07-22 11:11:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2688 transitions. [2022-07-22 11:11:35,573 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2688 transitions. Word has length 17 [2022-07-22 11:11:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:35,575 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2688 transitions. [2022-07-22 11:11:35,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2688 transitions. [2022-07-22 11:11:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 11:11:35,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:35,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:35,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 11:11:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 11:11:35,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 805678958, now seen corresponding path program 1 times [2022-07-22 11:11:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:35,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481995857] [2022-07-22 11:11:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:11:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:35,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481995857] [2022-07-22 11:11:35,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481995857] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:11:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890842281] [2022-07-22 11:11:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:35,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:11:35,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:11:35,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:11:35,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 11:11:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:36,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 11:11:36,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:11:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:11:36,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:11:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:11:36,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890842281] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:11:36,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 11:11:36,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-22 11:11:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012883727] [2022-07-22 11:11:36,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 11:11:36,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 11:11:36,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 11:11:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:11:36,513 INFO L87 Difference]: Start difference. First operand 1815 states and 2688 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:36,673 INFO L93 Difference]: Finished difference Result 3631 states and 5379 transitions. [2022-07-22 11:11:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:11:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-22 11:11:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:36,695 INFO L225 Difference]: With dead ends: 3631 [2022-07-22 11:11:36,695 INFO L226 Difference]: Without dead ends: 1821 [2022-07-22 11:11:36,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:11:36,706 INFO L413 NwaCegarLoop]: 2633 mSDtfsCounter, 4 mSDsluCounter, 5262 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:36,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7895 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:11:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-07-22 11:11:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2022-07-22 11:11:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1290 states have (on average 1.3945736434108527) internal successors, (1799), 1339 states have internal predecessors, (1799), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-07-22 11:11:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2694 transitions. [2022-07-22 11:11:36,818 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2694 transitions. Word has length 21 [2022-07-22 11:11:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:36,818 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2694 transitions. [2022-07-22 11:11:36,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2694 transitions. [2022-07-22 11:11:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 11:11:36,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:36,824 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:36,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 11:11:37,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:11:37,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -130039224, now seen corresponding path program 2 times [2022-07-22 11:11:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:37,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788229978] [2022-07-22 11:11:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:37,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:37,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788229978] [2022-07-22 11:11:37,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788229978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:37,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:37,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:11:37,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962500668] [2022-07-22 11:11:37,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:37,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:11:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:11:37,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:37,195 INFO L87 Difference]: Start difference. First operand 1821 states and 2694 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:37,490 INFO L93 Difference]: Finished difference Result 4647 states and 6936 transitions. [2022-07-22 11:11:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:11:37,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-22 11:11:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:37,511 INFO L225 Difference]: With dead ends: 4647 [2022-07-22 11:11:37,511 INFO L226 Difference]: Without dead ends: 3432 [2022-07-22 11:11:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:37,519 INFO L413 NwaCegarLoop]: 4649 mSDtfsCounter, 2520 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 7025 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 7025 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 11:11:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2022-07-22 11:11:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 3401. [2022-07-22 11:11:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 2410 states have (on average 1.3908713692946058) internal successors, (3352), 2478 states have internal predecessors, (3352), 851 states have call successors, (851), 142 states have call predecessors, (851), 139 states have return successors, (869), 818 states have call predecessors, (869), 835 states have call successors, (869) [2022-07-22 11:11:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 5072 transitions. [2022-07-22 11:11:37,722 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 5072 transitions. Word has length 27 [2022-07-22 11:11:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:37,723 INFO L495 AbstractCegarLoop]: Abstraction has 3401 states and 5072 transitions. [2022-07-22 11:11:37,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 5072 transitions. [2022-07-22 11:11:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 11:11:37,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:37,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:37,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 11:11:37,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1667935007, now seen corresponding path program 1 times [2022-07-22 11:11:37,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:37,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191934510] [2022-07-22 11:11:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:37,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 11:11:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:37,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191934510] [2022-07-22 11:11:37,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191934510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:37,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:37,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:11:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032720750] [2022-07-22 11:11:37,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:37,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:11:37,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:11:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:11:37,920 INFO L87 Difference]: Start difference. First operand 3401 states and 5072 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:41,800 INFO L93 Difference]: Finished difference Result 4210 states and 6250 transitions. [2022-07-22 11:11:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 11:11:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-22 11:11:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:41,823 INFO L225 Difference]: With dead ends: 4210 [2022-07-22 11:11:41,824 INFO L226 Difference]: Without dead ends: 4205 [2022-07-22 11:11:41,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:11:41,827 INFO L413 NwaCegarLoop]: 2484 mSDtfsCounter, 2469 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 1458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1458 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:41,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 4455 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1458 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 11:11:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2022-07-22 11:11:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4176. [2022-07-22 11:11:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2902 states have (on average 1.3818056512749828) internal successors, (4010), 2980 states have internal predecessors, (4010), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-07-22 11:11:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6205 transitions. [2022-07-22 11:11:42,076 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6205 transitions. Word has length 40 [2022-07-22 11:11:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:42,077 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6205 transitions. [2022-07-22 11:11:42,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6205 transitions. [2022-07-22 11:11:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 11:11:42,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:42,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:42,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 11:11:42,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 618913342, now seen corresponding path program 1 times [2022-07-22 11:11:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:42,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914288220] [2022-07-22 11:11:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 11:11:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:42,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:42,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914288220] [2022-07-22 11:11:42,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914288220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:42,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:42,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 11:11:42,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221130422] [2022-07-22 11:11:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:42,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:11:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:11:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:11:42,307 INFO L87 Difference]: Start difference. First operand 4176 states and 6205 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:47,561 INFO L93 Difference]: Finished difference Result 4223 states and 6262 transitions. [2022-07-22 11:11:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:11:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-22 11:11:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:47,582 INFO L225 Difference]: With dead ends: 4223 [2022-07-22 11:11:47,583 INFO L226 Difference]: Without dead ends: 4214 [2022-07-22 11:11:47,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:11:47,585 INFO L413 NwaCegarLoop]: 2437 mSDtfsCounter, 6229 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 3677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6361 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 7934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3677 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:47,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6361 Valid, 5116 Invalid, 7934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3677 Valid, 4257 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 11:11:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2022-07-22 11:11:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4176. [2022-07-22 11:11:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2902 states have (on average 1.3811164713990352) internal successors, (4008), 2980 states have internal predecessors, (4008), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-07-22 11:11:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6203 transitions. [2022-07-22 11:11:47,814 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6203 transitions. Word has length 41 [2022-07-22 11:11:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:47,815 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6203 transitions. [2022-07-22 11:11:47,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6203 transitions. [2022-07-22 11:11:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 11:11:47,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:47,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:47,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 11:11:47,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1117126507, now seen corresponding path program 1 times [2022-07-22 11:11:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:47,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844991257] [2022-07-22 11:11:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 11:11:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:48,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:48,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844991257] [2022-07-22 11:11:48,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844991257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:48,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:48,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 11:11:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61554165] [2022-07-22 11:11:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:11:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:11:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:11:48,009 INFO L87 Difference]: Start difference. First operand 4176 states and 6203 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:52,958 INFO L93 Difference]: Finished difference Result 4216 states and 6251 transitions. [2022-07-22 11:11:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:11:52,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-22 11:11:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:52,981 INFO L225 Difference]: With dead ends: 4216 [2022-07-22 11:11:52,982 INFO L226 Difference]: Without dead ends: 4207 [2022-07-22 11:11:52,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:11:52,985 INFO L413 NwaCegarLoop]: 2468 mSDtfsCounter, 6176 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 3655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 7907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3655 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:52,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 5142 Invalid, 7907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3655 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-22 11:11:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-07-22 11:11:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4176. [2022-07-22 11:11:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 2902 states have (on average 1.3804272915230875) internal successors, (4006), 2980 states have internal predecessors, (4006), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-07-22 11:11:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6201 transitions. [2022-07-22 11:11:53,241 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6201 transitions. Word has length 42 [2022-07-22 11:11:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:53,242 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6201 transitions. [2022-07-22 11:11:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6201 transitions. [2022-07-22 11:11:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 11:11:53,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:53,244 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:53,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 11:11:53,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2075772706, now seen corresponding path program 1 times [2022-07-22 11:11:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:53,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405259008] [2022-07-22 11:11:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:53,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405259008] [2022-07-22 11:11:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405259008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:53,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:11:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701968804] [2022-07-22 11:11:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:11:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:11:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:53,424 INFO L87 Difference]: Start difference. First operand 4176 states and 6201 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:53,592 INFO L93 Difference]: Finished difference Result 6829 states and 10118 transitions. [2022-07-22 11:11:53,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:11:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-22 11:11:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:53,647 INFO L225 Difference]: With dead ends: 6829 [2022-07-22 11:11:53,647 INFO L226 Difference]: Without dead ends: 6526 [2022-07-22 11:11:53,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:53,656 INFO L413 NwaCegarLoop]: 3877 mSDtfsCounter, 2517 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 5767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:53,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 5767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:11:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2022-07-22 11:11:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 6445. [2022-07-22 11:11:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 4434 states have (on average 1.3813712223725756) internal successors, (6125), 4552 states have internal predecessors, (6125), 1726 states have call successors, (1726), 283 states have call predecessors, (1726), 284 states have return successors, (1757), 1678 states have call predecessors, (1757), 1713 states have call successors, (1757) [2022-07-22 11:11:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 9608 transitions. [2022-07-22 11:11:54,041 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 9608 transitions. Word has length 43 [2022-07-22 11:11:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:54,041 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 9608 transitions. [2022-07-22 11:11:54,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 9608 transitions. [2022-07-22 11:11:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 11:11:54,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:54,044 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:54,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 11:11:54,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash 326032775, now seen corresponding path program 1 times [2022-07-22 11:11:54,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:54,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16257461] [2022-07-22 11:11:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:54,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 11:11:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:54,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16257461] [2022-07-22 11:11:54,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16257461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:54,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:54,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 11:11:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523173796] [2022-07-22 11:11:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:11:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:11:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:11:54,215 INFO L87 Difference]: Start difference. First operand 6445 states and 9608 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:57,240 INFO L93 Difference]: Finished difference Result 6473 states and 9642 transitions. [2022-07-22 11:11:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 11:11:57,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-07-22 11:11:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:57,267 INFO L225 Difference]: With dead ends: 6473 [2022-07-22 11:11:57,267 INFO L226 Difference]: Without dead ends: 6427 [2022-07-22 11:11:57,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:11:57,274 INFO L413 NwaCegarLoop]: 2334 mSDtfsCounter, 885 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:57,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 5566 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 11:11:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6427 states. [2022-07-22 11:11:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6427 to 6426. [2022-07-22 11:11:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 4421 states have (on average 1.381361682877177) internal successors, (6107), 4539 states have internal predecessors, (6107), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2022-07-22 11:11:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9578 transitions. [2022-07-22 11:11:57,573 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9578 transitions. Word has length 43 [2022-07-22 11:11:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:57,573 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9578 transitions. [2022-07-22 11:11:57,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:11:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9578 transitions. [2022-07-22 11:11:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 11:11:57,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:57,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:57,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 11:11:57,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1127454167, now seen corresponding path program 1 times [2022-07-22 11:11:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:57,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513166009] [2022-07-22 11:11:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:57,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513166009] [2022-07-22 11:11:57,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513166009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:57,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:57,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:11:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720667131] [2022-07-22 11:11:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:11:57,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:11:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:57,727 INFO L87 Difference]: Start difference. First operand 6426 states and 9578 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:11:58,018 INFO L93 Difference]: Finished difference Result 6429 states and 9580 transitions. [2022-07-22 11:11:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:11:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-22 11:11:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:11:58,045 INFO L225 Difference]: With dead ends: 6429 [2022-07-22 11:11:58,045 INFO L226 Difference]: Without dead ends: 6426 [2022-07-22 11:11:58,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:11:58,050 INFO L413 NwaCegarLoop]: 2588 mSDtfsCounter, 12 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:11:58,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5118 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:11:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6426 states. [2022-07-22 11:11:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6426. [2022-07-22 11:11:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 4421 states have (on average 1.3811354897082109) internal successors, (6106), 4539 states have internal predecessors, (6106), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2022-07-22 11:11:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9577 transitions. [2022-07-22 11:11:58,367 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9577 transitions. Word has length 43 [2022-07-22 11:11:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:11:58,368 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9577 transitions. [2022-07-22 11:11:58,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:11:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9577 transitions. [2022-07-22 11:11:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-22 11:11:58,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:11:58,369 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:11:58,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 11:11:58,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:11:58,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:11:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1697051292, now seen corresponding path program 1 times [2022-07-22 11:11:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:11:58,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436181105] [2022-07-22 11:11:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:11:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:11:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 11:11:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:11:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:11:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:11:58,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:11:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436181105] [2022-07-22 11:11:58,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436181105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:11:58,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:11:58,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:11:58,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630906333] [2022-07-22 11:11:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:11:58,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:11:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:11:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:11:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:11:58,578 INFO L87 Difference]: Start difference. First operand 6426 states and 9577 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:02,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:06,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:11,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:11,264 INFO L93 Difference]: Finished difference Result 13145 states and 19700 transitions. [2022-07-22 11:12:11,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:12:11,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-07-22 11:12:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:11,295 INFO L225 Difference]: With dead ends: 13145 [2022-07-22 11:12:11,295 INFO L226 Difference]: Without dead ends: 7299 [2022-07-22 11:12:11,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-22 11:12:11,319 INFO L413 NwaCegarLoop]: 2349 mSDtfsCounter, 680 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 9206 mSolverCounterSat, 498 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 11230 SdHoareTripleChecker+Invalid, 9706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 9206 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:11,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 11230 Invalid, 9706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 9206 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-07-22 11:12:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2022-07-22 11:12:11,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 6435. [2022-07-22 11:12:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6435 states, 4428 states have (on average 1.3805329719963866) internal successors, (6113), 4546 states have internal predecessors, (6113), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 286 states have return successors, (1756), 1674 states have call predecessors, (1756), 1707 states have call successors, (1756) [2022-07-22 11:12:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6435 states to 6435 states and 9589 transitions. [2022-07-22 11:12:11,700 INFO L78 Accepts]: Start accepts. Automaton has 6435 states and 9589 transitions. Word has length 46 [2022-07-22 11:12:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:11,701 INFO L495 AbstractCegarLoop]: Abstraction has 6435 states and 9589 transitions. [2022-07-22 11:12:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6435 states and 9589 transitions. [2022-07-22 11:12:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-22 11:12:11,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:11,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:11,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 11:12:11,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:11,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1485700379, now seen corresponding path program 1 times [2022-07-22 11:12:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719659542] [2022-07-22 11:12:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 11:12:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:11,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:12:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:11,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719659542] [2022-07-22 11:12:11,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719659542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:11,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:11,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 11:12:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251007409] [2022-07-22 11:12:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:12:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:12:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:12:11,928 INFO L87 Difference]: Start difference. First operand 6435 states and 9589 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:15,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:19,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:23,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:23,084 INFO L93 Difference]: Finished difference Result 12459 states and 18675 transitions. [2022-07-22 11:12:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 11:12:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-07-22 11:12:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:23,113 INFO L225 Difference]: With dead ends: 12459 [2022-07-22 11:12:23,113 INFO L226 Difference]: Without dead ends: 7261 [2022-07-22 11:12:23,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:12:23,134 INFO L413 NwaCegarLoop]: 2318 mSDtfsCounter, 643 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 5203 mSolverCounterSat, 496 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 5701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 5203 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:23,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 6988 Invalid, 5701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 5203 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-07-22 11:12:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-07-22 11:12:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6429. [2022-07-22 11:12:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6429 states, 4423 states have (on average 1.380510965408094) internal successors, (6106), 4541 states have internal predecessors, (6106), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2022-07-22 11:12:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 9579 transitions. [2022-07-22 11:12:23,549 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 9579 transitions. Word has length 46 [2022-07-22 11:12:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:23,549 INFO L495 AbstractCegarLoop]: Abstraction has 6429 states and 9579 transitions. [2022-07-22 11:12:23,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 9579 transitions. [2022-07-22 11:12:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 11:12:23,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:23,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 11:12:23,552 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1399500385, now seen corresponding path program 1 times [2022-07-22 11:12:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662835890] [2022-07-22 11:12:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:23,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:23,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662835890] [2022-07-22 11:12:23,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662835890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:23,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:23,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 11:12:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334625739] [2022-07-22 11:12:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:12:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:12:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:12:23,705 INFO L87 Difference]: Start difference. First operand 6429 states and 9579 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:12:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:24,042 INFO L93 Difference]: Finished difference Result 6521 states and 9703 transitions. [2022-07-22 11:12:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:12:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-22 11:12:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:24,069 INFO L225 Difference]: With dead ends: 6521 [2022-07-22 11:12:24,070 INFO L226 Difference]: Without dead ends: 6490 [2022-07-22 11:12:24,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:12:24,074 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 160 mSDsluCounter, 10441 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 13041 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:24,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 13041 Invalid, 53 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:12:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2022-07-22 11:12:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 6432. [2022-07-22 11:12:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6432 states, 4426 states have (on average 1.3802530501581562) internal successors, (6109), 4544 states have internal predecessors, (6109), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2022-07-22 11:12:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 9582 transitions. [2022-07-22 11:12:24,389 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 9582 transitions. Word has length 45 [2022-07-22 11:12:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:24,389 INFO L495 AbstractCegarLoop]: Abstraction has 6432 states and 9582 transitions. [2022-07-22 11:12:24,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:12:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 9582 transitions. [2022-07-22 11:12:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 11:12:24,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:24,391 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:24,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 11:12:24,391 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash 388874719, now seen corresponding path program 1 times [2022-07-22 11:12:24,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:24,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335463929] [2022-07-22 11:12:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335463929] [2022-07-22 11:12:24,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335463929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:24,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:24,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 11:12:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494278126] [2022-07-22 11:12:24,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:24,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:12:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:12:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:12:24,544 INFO L87 Difference]: Start difference. First operand 6432 states and 9582 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:12:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:24,821 INFO L93 Difference]: Finished difference Result 6517 states and 9696 transitions. [2022-07-22 11:12:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:12:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-22 11:12:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:24,849 INFO L225 Difference]: With dead ends: 6517 [2022-07-22 11:12:24,849 INFO L226 Difference]: Without dead ends: 6486 [2022-07-22 11:12:24,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:12:24,857 INFO L413 NwaCegarLoop]: 2619 mSDtfsCounter, 160 mSDsluCounter, 10485 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 13104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:24,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 13104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:12:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2022-07-22 11:12:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6425. [2022-07-22 11:12:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 4420 states have (on average 1.380316742081448) internal successors, (6101), 4537 states have internal predecessors, (6101), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2022-07-22 11:12:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9572 transitions. [2022-07-22 11:12:25,223 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9572 transitions. Word has length 45 [2022-07-22 11:12:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:25,223 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 9572 transitions. [2022-07-22 11:12:25,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:12:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9572 transitions. [2022-07-22 11:12:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 11:12:25,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:25,225 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:25,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 11:12:25,225 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash 195220579, now seen corresponding path program 1 times [2022-07-22 11:12:25,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:25,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050374455] [2022-07-22 11:12:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 11:12:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:12:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:25,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:25,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050374455] [2022-07-22 11:12:25,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050374455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:25,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:25,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:12:25,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347209663] [2022-07-22 11:12:25,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:25,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:12:25,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:12:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:12:25,435 INFO L87 Difference]: Start difference. First operand 6425 states and 9572 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 11:12:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:32,305 INFO L93 Difference]: Finished difference Result 7285 states and 10963 transitions. [2022-07-22 11:12:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 11:12:32,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-07-22 11:12:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:32,336 INFO L225 Difference]: With dead ends: 7285 [2022-07-22 11:12:32,337 INFO L226 Difference]: Without dead ends: 7255 [2022-07-22 11:12:32,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 11:12:32,343 INFO L413 NwaCegarLoop]: 2194 mSDtfsCounter, 1663 mSDsluCounter, 6232 mSDsCounter, 0 mSdLazyCounter, 8972 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 8426 SdHoareTripleChecker+Invalid, 10235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 8972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:32,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 8426 Invalid, 10235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1263 Valid, 8972 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-22 11:12:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7255 states. [2022-07-22 11:12:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7255 to 6423. [2022-07-22 11:12:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 4419 states have (on average 1.3801765105227426) internal successors, (6099), 4536 states have internal predecessors, (6099), 1718 states have call successors, (1718), 283 states have call predecessors, (1718), 285 states have return successors, (1751), 1671 states have call predecessors, (1751), 1705 states have call successors, (1751) [2022-07-22 11:12:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9568 transitions. [2022-07-22 11:12:32,766 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9568 transitions. Word has length 47 [2022-07-22 11:12:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:32,766 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9568 transitions. [2022-07-22 11:12:32,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 11:12:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9568 transitions. [2022-07-22 11:12:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 11:12:32,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:32,768 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 11:12:32,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 479588916, now seen corresponding path program 1 times [2022-07-22 11:12:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:32,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368307523] [2022-07-22 11:12:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 11:12:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:12:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:32,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:32,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368307523] [2022-07-22 11:12:32,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368307523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:32,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:32,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:12:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588086487] [2022-07-22 11:12:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:32,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:12:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:32,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:12:32,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:12:32,993 INFO L87 Difference]: Start difference. First operand 6423 states and 9568 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:36,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:41,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:47,468 INFO L93 Difference]: Finished difference Result 8481 states and 12866 transitions. [2022-07-22 11:12:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:12:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-07-22 11:12:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:47,494 INFO L225 Difference]: With dead ends: 8481 [2022-07-22 11:12:47,494 INFO L226 Difference]: Without dead ends: 8441 [2022-07-22 11:12:47,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-22 11:12:47,498 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 1077 mSDsluCounter, 11218 mSDsCounter, 0 mSdLazyCounter, 9626 mSolverCounterSat, 511 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 14028 SdHoareTripleChecker+Invalid, 10139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 9626 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:47,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 14028 Invalid, 10139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 9626 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-07-22 11:12:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2022-07-22 11:12:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 6423. [2022-07-22 11:12:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 4419 states have (on average 1.379950214980765) internal successors, (6098), 4536 states have internal predecessors, (6098), 1718 states have call successors, (1718), 283 states have call predecessors, (1718), 285 states have return successors, (1751), 1671 states have call predecessors, (1751), 1705 states have call successors, (1751) [2022-07-22 11:12:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9567 transitions. [2022-07-22 11:12:47,892 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9567 transitions. Word has length 50 [2022-07-22 11:12:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:47,893 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9567 transitions. [2022-07-22 11:12:47,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9567 transitions. [2022-07-22 11:12:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 11:12:47,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:47,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:47,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 11:12:47,895 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1998052607, now seen corresponding path program 1 times [2022-07-22 11:12:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:47,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114972249] [2022-07-22 11:12:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:47,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 11:12:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:48,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 11:12:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:48,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:48,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114972249] [2022-07-22 11:12:48,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114972249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:48,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:48,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 11:12:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377982217] [2022-07-22 11:12:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:48,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 11:12:48,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 11:12:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:12:48,081 INFO L87 Difference]: Start difference. First operand 6423 states and 9567 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:51,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:55,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:12:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:12:59,280 INFO L93 Difference]: Finished difference Result 7282 states and 10957 transitions. [2022-07-22 11:12:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 11:12:59,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-07-22 11:12:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:12:59,307 INFO L225 Difference]: With dead ends: 7282 [2022-07-22 11:12:59,307 INFO L226 Difference]: Without dead ends: 7252 [2022-07-22 11:12:59,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:12:59,313 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 1000 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 6266 mSolverCounterSat, 548 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 7014 SdHoareTripleChecker+Invalid, 6815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 6266 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:12:59,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 7014 Invalid, 6815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 6266 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-07-22 11:12:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2022-07-22 11:12:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 6420. [2022-07-22 11:12:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6420 states, 4417 states have (on average 1.3798958569164592) internal successors, (6095), 4534 states have internal predecessors, (6095), 1717 states have call successors, (1717), 283 states have call predecessors, (1717), 285 states have return successors, (1750), 1670 states have call predecessors, (1750), 1704 states have call successors, (1750) [2022-07-22 11:12:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 9562 transitions. [2022-07-22 11:12:59,700 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 9562 transitions. Word has length 53 [2022-07-22 11:12:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:12:59,701 INFO L495 AbstractCegarLoop]: Abstraction has 6420 states and 9562 transitions. [2022-07-22 11:12:59,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:12:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 9562 transitions. [2022-07-22 11:12:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 11:12:59,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:12:59,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:12:59,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 11:12:59,703 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:12:59,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:12:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1566112443, now seen corresponding path program 1 times [2022-07-22 11:12:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:12:59,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253176429] [2022-07-22 11:12:59,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:12:59,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:12:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:59,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 11:12:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 11:12:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:12:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:12:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:12:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253176429] [2022-07-22 11:12:59,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253176429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:12:59,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:12:59,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 11:12:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926812424] [2022-07-22 11:12:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:12:59,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 11:12:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:12:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 11:12:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:12:59,917 INFO L87 Difference]: Start difference. First operand 6420 states and 9562 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:13:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:13:05,363 INFO L93 Difference]: Finished difference Result 7279 states and 10952 transitions. [2022-07-22 11:13:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 11:13:05,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-07-22 11:13:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:13:05,426 INFO L225 Difference]: With dead ends: 7279 [2022-07-22 11:13:05,426 INFO L226 Difference]: Without dead ends: 7243 [2022-07-22 11:13:05,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:13:05,428 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 1624 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 6284 SdHoareTripleChecker+Invalid, 7086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:13:05,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 6284 Invalid, 7086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 11:13:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7243 states. [2022-07-22 11:13:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7243 to 6411. [2022-07-22 11:13:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 4411 states have (on average 1.379959192926774) internal successors, (6087), 4528 states have internal predecessors, (6087), 1715 states have call successors, (1715), 282 states have call predecessors, (1715), 284 states have return successors, (1748), 1668 states have call predecessors, (1748), 1702 states have call successors, (1748) [2022-07-22 11:13:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 9550 transitions. [2022-07-22 11:13:05,737 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 9550 transitions. Word has length 50 [2022-07-22 11:13:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:13:05,737 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 9550 transitions. [2022-07-22 11:13:05,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:13:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 9550 transitions. [2022-07-22 11:13:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 11:13:05,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:13:05,740 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:13:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 11:13:05,740 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:13:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:13:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2113042750, now seen corresponding path program 1 times [2022-07-22 11:13:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:13:05,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057707518] [2022-07-22 11:13:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:13:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:13:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 11:13:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:13:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:13:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:13:05,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057707518] [2022-07-22 11:13:05,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057707518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:13:05,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:13:05,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:13:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168360039] [2022-07-22 11:13:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:13:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:13:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:13:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:13:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:13:05,941 INFO L87 Difference]: Start difference. First operand 6411 states and 9550 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:13:07,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:13:09,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:13:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:13:18,566 INFO L93 Difference]: Finished difference Result 7402 states and 11115 transitions. [2022-07-22 11:13:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:13:18,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-07-22 11:13:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:13:18,586 INFO L225 Difference]: With dead ends: 7402 [2022-07-22 11:13:18,586 INFO L226 Difference]: Without dead ends: 7308 [2022-07-22 11:13:18,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-22 11:13:18,590 INFO L413 NwaCegarLoop]: 2565 mSDtfsCounter, 835 mSDsluCounter, 9908 mSDsCounter, 0 mSdLazyCounter, 9492 mSolverCounterSat, 508 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 12473 SdHoareTripleChecker+Invalid, 10001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 9492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:13:18,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 12473 Invalid, 10001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 9492 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2022-07-22 11:13:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2022-07-22 11:13:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 6419. [2022-07-22 11:13:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6419 states, 4417 states have (on average 1.3796694589087617) internal successors, (6094), 4536 states have internal predecessors, (6094), 1717 states have call successors, (1717), 282 states have call predecessors, (1717), 284 states have return successors, (1750), 1670 states have call predecessors, (1750), 1704 states have call successors, (1750) [2022-07-22 11:13:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 9561 transitions. [2022-07-22 11:13:18,860 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 9561 transitions. Word has length 54 [2022-07-22 11:13:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:13:18,860 INFO L495 AbstractCegarLoop]: Abstraction has 6419 states and 9561 transitions. [2022-07-22 11:13:18,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 11:13:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 9561 transitions. [2022-07-22 11:13:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:13:18,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:13:18,862 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:13:18,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 11:13:18,863 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:13:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:13:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1879920607, now seen corresponding path program 1 times [2022-07-22 11:13:18,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:13:18,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313352302] [2022-07-22 11:13:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:13:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:13:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 11:13:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:13:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 11:13:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:13:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:13:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:13:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313352302] [2022-07-22 11:13:19,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313352302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:13:19,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:13:19,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 11:13:19,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716494279] [2022-07-22 11:13:19,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:13:19,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 11:13:19,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:13:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 11:13:19,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 11:13:19,137 INFO L87 Difference]: Start difference. First operand 6419 states and 9561 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 11:13:21,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:13:23,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:13:28,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:13:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:13:32,358 INFO L93 Difference]: Finished difference Result 12075 states and 18069 transitions. [2022-07-22 11:13:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:13:32,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-07-22 11:13:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:13:32,374 INFO L225 Difference]: With dead ends: 12075 [2022-07-22 11:13:32,374 INFO L226 Difference]: Without dead ends: 7123 [2022-07-22 11:13:32,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:13:32,391 INFO L413 NwaCegarLoop]: 2207 mSDtfsCounter, 1011 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 7823 mSolverCounterSat, 542 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 8008 SdHoareTripleChecker+Invalid, 8367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 7823 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:13:32,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 8008 Invalid, 8367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 7823 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-07-22 11:13:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2022-07-22 11:13:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6265. [2022-07-22 11:13:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6265 states, 4302 states have (on average 1.3772663877266387) internal successors, (5925), 4406 states have internal predecessors, (5925), 1686 states have call successors, (1686), 270 states have call predecessors, (1686), 276 states have return successors, (1704), 1658 states have call predecessors, (1704), 1676 states have call successors, (1704) [2022-07-22 11:13:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 9315 transitions. [2022-07-22 11:13:32,692 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 9315 transitions. Word has length 58 [2022-07-22 11:13:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:13:32,693 INFO L495 AbstractCegarLoop]: Abstraction has 6265 states and 9315 transitions. [2022-07-22 11:13:32,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 11:13:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 9315 transitions. [2022-07-22 11:13:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 11:13:32,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:13:32,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:13:32,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 11:13:32,696 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:13:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:13:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1760545175, now seen corresponding path program 1 times [2022-07-22 11:13:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:13:32,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753251395] [2022-07-22 11:13:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:13:32,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:13:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 11:13:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:13:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:13:32,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:13:32,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753251395] [2022-07-22 11:13:32,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753251395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:13:32,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:13:32,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:13:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481474407] [2022-07-22 11:13:32,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:13:32,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:13:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:13:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:13:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:13:32,904 INFO L87 Difference]: Start difference. First operand 6265 states and 9315 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 11:13:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:13:39,840 INFO L93 Difference]: Finished difference Result 7124 states and 10703 transitions. [2022-07-22 11:13:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 11:13:39,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2022-07-22 11:13:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:13:39,859 INFO L225 Difference]: With dead ends: 7124 [2022-07-22 11:13:39,859 INFO L226 Difference]: Without dead ends: 7094 [2022-07-22 11:13:39,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 11:13:39,863 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 1643 mSDsluCounter, 6117 mSDsCounter, 0 mSdLazyCounter, 9025 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 10266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 9025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:13:39,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 8307 Invalid, 10266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 9025 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-22 11:13:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-07-22 11:13:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 6263. [2022-07-22 11:13:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 4301 states have (on average 1.3771215996279935) internal successors, (5923), 4405 states have internal predecessors, (5923), 1685 states have call successors, (1685), 270 states have call predecessors, (1685), 276 states have return successors, (1703), 1657 states have call predecessors, (1703), 1675 states have call successors, (1703) [2022-07-22 11:13:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 9311 transitions. [2022-07-22 11:13:40,220 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 9311 transitions. Word has length 55 [2022-07-22 11:13:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:13:40,220 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 9311 transitions. [2022-07-22 11:13:40,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 11:13:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 9311 transitions. [2022-07-22 11:13:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 11:13:40,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:13:40,222 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:13:40,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 11:13:40,222 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:13:40,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:13:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash 460730707, now seen corresponding path program 1 times [2022-07-22 11:13:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:13:40,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704065367] [2022-07-22 11:13:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:13:40,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:13:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 11:13:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:13:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 11:13:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:13:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:13:40,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704065367] [2022-07-22 11:13:40,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704065367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:13:40,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:13:40,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 11:13:40,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008593932] [2022-07-22 11:13:40,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:13:40,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 11:13:40,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:13:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 11:13:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 11:13:40,402 INFO L87 Difference]: Start difference. First operand 6263 states and 9311 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 11:13:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:13:46,056 INFO L93 Difference]: Finished difference Result 6408 states and 9506 transitions. [2022-07-22 11:13:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 11:13:46,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-22 11:13:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:13:46,074 INFO L225 Difference]: With dead ends: 6408 [2022-07-22 11:13:46,074 INFO L226 Difference]: Without dead ends: 6367 [2022-07-22 11:13:46,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:13:46,078 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 915 mSDsluCounter, 6594 mSDsCounter, 0 mSdLazyCounter, 7763 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 8910 SdHoareTripleChecker+Invalid, 8207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 7763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:13:46,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 8910 Invalid, 8207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 7763 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-22 11:13:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-07-22 11:13:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6268. [2022-07-22 11:13:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6268 states, 4305 states have (on average 1.3767711962833915) internal successors, (5927), 4408 states have internal predecessors, (5927), 1685 states have call successors, (1685), 270 states have call predecessors, (1685), 277 states have return successors, (1704), 1659 states have call predecessors, (1704), 1675 states have call successors, (1704) [2022-07-22 11:13:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 9316 transitions. [2022-07-22 11:13:46,373 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 9316 transitions. Word has length 56 [2022-07-22 11:13:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:13:46,373 INFO L495 AbstractCegarLoop]: Abstraction has 6268 states and 9316 transitions. [2022-07-22 11:13:46,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 11:13:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 9316 transitions. [2022-07-22 11:13:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 11:13:46,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:13:46,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:13:46,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 11:13:46,377 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:13:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:13:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1153832404, now seen corresponding path program 1 times [2022-07-22 11:13:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:13:46,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883462092] [2022-07-22 11:13:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:13:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:13:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 11:13:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:13:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 11:13:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:13:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:13:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883462092] [2022-07-22 11:13:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883462092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:13:46,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:13:46,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 11:13:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008136161] [2022-07-22 11:13:46,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:13:46,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:13:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:13:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:13:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:13:46,578 INFO L87 Difference]: Start difference. First operand 6268 states and 9316 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 11:13:50,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:13:50,662 INFO L93 Difference]: Finished difference Result 6296 states and 9350 transitions. [2022-07-22 11:13:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 11:13:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-22 11:13:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:13:50,679 INFO L225 Difference]: With dead ends: 6296 [2022-07-22 11:13:50,680 INFO L226 Difference]: Without dead ends: 6266 [2022-07-22 11:13:50,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 11:13:50,683 INFO L413 NwaCegarLoop]: 2297 mSDtfsCounter, 906 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 5261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:13:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 6498 Invalid, 5261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 11:13:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2022-07-22 11:13:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6261. [2022-07-22 11:13:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 4300 states have (on average 1.3769767441860465) internal successors, (5921), 4404 states have internal predecessors, (5921), 1684 states have call successors, (1684), 270 states have call predecessors, (1684), 276 states have return successors, (1702), 1656 states have call predecessors, (1702), 1674 states have call successors, (1702) [2022-07-22 11:13:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9307 transitions. [2022-07-22 11:13:50,957 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9307 transitions. Word has length 56 [2022-07-22 11:13:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:13:50,957 INFO L495 AbstractCegarLoop]: Abstraction has 6261 states and 9307 transitions. [2022-07-22 11:13:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 11:13:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9307 transitions. [2022-07-22 11:13:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 11:13:50,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:13:50,959 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:13:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 11:13:50,960 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:13:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:13:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1964601087, now seen corresponding path program 1 times [2022-07-22 11:13:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:13:50,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9298292] [2022-07-22 11:13:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:13:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:13:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 11:13:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:13:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:13:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:13:51,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9298292] [2022-07-22 11:13:51,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9298292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:13:51,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:13:51,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 11:13:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063395886] [2022-07-22 11:13:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:13:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 11:13:51,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:13:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 11:13:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:13:51,180 INFO L87 Difference]: Start difference. First operand 6261 states and 9307 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:13:53,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:13:55,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:01,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:14:05,948 INFO L93 Difference]: Finished difference Result 7021 states and 10475 transitions. [2022-07-22 11:14:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 11:14:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-22 11:14:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:14:05,969 INFO L225 Difference]: With dead ends: 7021 [2022-07-22 11:14:05,970 INFO L226 Difference]: Without dead ends: 6934 [2022-07-22 11:14:05,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-07-22 11:14:05,974 INFO L413 NwaCegarLoop]: 2232 mSDtfsCounter, 3663 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 8479 mSolverCounterSat, 2271 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 6468 SdHoareTripleChecker+Invalid, 10752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2271 IncrementalHoareTripleChecker+Valid, 8479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:14:05,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3818 Valid, 6468 Invalid, 10752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2271 Valid, 8479 Invalid, 2 Unknown, 0 Unchecked, 14.2s Time] [2022-07-22 11:14:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2022-07-22 11:14:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6307. [2022-07-22 11:14:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 4336 states have (on average 1.3763837638376384) internal successors, (5968), 4441 states have internal predecessors, (5968), 1688 states have call successors, (1688), 275 states have call predecessors, (1688), 282 states have return successors, (1706), 1660 states have call predecessors, (1706), 1678 states have call successors, (1706) [2022-07-22 11:14:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 9362 transitions. [2022-07-22 11:14:06,328 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 9362 transitions. Word has length 55 [2022-07-22 11:14:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:14:06,329 INFO L495 AbstractCegarLoop]: Abstraction has 6307 states and 9362 transitions. [2022-07-22 11:14:06,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:14:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 9362 transitions. [2022-07-22 11:14:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 11:14:06,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:14:06,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:14:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 11:14:06,332 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:14:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:14:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash 565116710, now seen corresponding path program 1 times [2022-07-22 11:14:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:14:06,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554581242] [2022-07-22 11:14:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:14:06,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:14:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 11:14:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:14:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:06,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 11:14:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:14:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 11:14:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:14:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:14:06,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554581242] [2022-07-22 11:14:06,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554581242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:14:06,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:14:06,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 11:14:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270436569] [2022-07-22 11:14:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:14:06,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 11:14:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:14:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 11:14:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 11:14:06,595 INFO L87 Difference]: Start difference. First operand 6307 states and 9362 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 11:14:09,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:11,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:14:17,144 INFO L93 Difference]: Finished difference Result 7174 states and 10698 transitions. [2022-07-22 11:14:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:14:17,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 69 [2022-07-22 11:14:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:14:17,159 INFO L225 Difference]: With dead ends: 7174 [2022-07-22 11:14:17,159 INFO L226 Difference]: Without dead ends: 6181 [2022-07-22 11:14:17,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:14:17,164 INFO L413 NwaCegarLoop]: 2200 mSDtfsCounter, 1652 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 7397 mSolverCounterSat, 1274 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 7331 SdHoareTripleChecker+Invalid, 8673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1274 IncrementalHoareTripleChecker+Valid, 7397 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:14:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 7331 Invalid, 8673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1274 Valid, 7397 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-07-22 11:14:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-07-22 11:14:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 5431. [2022-07-22 11:14:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 3770 states have (on average 1.3755968169761272) internal successors, (5186), 3858 states have internal predecessors, (5186), 1418 states have call successors, (1418), 235 states have call predecessors, (1418), 242 states have return successors, (1436), 1395 states have call predecessors, (1436), 1408 states have call successors, (1436) [2022-07-22 11:14:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 8040 transitions. [2022-07-22 11:14:17,421 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 8040 transitions. Word has length 69 [2022-07-22 11:14:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:14:17,422 INFO L495 AbstractCegarLoop]: Abstraction has 5431 states and 8040 transitions. [2022-07-22 11:14:17,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 11:14:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 8040 transitions. [2022-07-22 11:14:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 11:14:17,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:14:17,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:14:17,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 11:14:17,424 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:14:17,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:14:17,425 INFO L85 PathProgramCache]: Analyzing trace with hash -823060444, now seen corresponding path program 1 times [2022-07-22 11:14:17,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:14:17,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083791119] [2022-07-22 11:14:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:14:17,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:14:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 11:14:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:14:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:14:17,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083791119] [2022-07-22 11:14:17,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083791119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:14:17,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:14:17,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:14:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772360396] [2022-07-22 11:14:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:14:17,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:14:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:14:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:14:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:14:17,572 INFO L87 Difference]: Start difference. First operand 5431 states and 8040 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:14:19,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:21,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:25,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:28,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:14:33,431 INFO L93 Difference]: Finished difference Result 7296 states and 10890 transitions. [2022-07-22 11:14:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 11:14:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-07-22 11:14:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:14:33,452 INFO L225 Difference]: With dead ends: 7296 [2022-07-22 11:14:33,452 INFO L226 Difference]: Without dead ends: 7283 [2022-07-22 11:14:33,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:14:33,456 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 1993 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 1126 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 5838 SdHoareTripleChecker+Invalid, 4575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:14:33,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 5838 Invalid, 4575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 3447 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2022-07-22 11:14:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7283 states. [2022-07-22 11:14:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7283 to 5516. [2022-07-22 11:14:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 3843 states have (on average 1.3702836325787144) internal successors, (5266), 3921 states have internal predecessors, (5266), 1422 states have call successors, (1422), 239 states have call predecessors, (1422), 250 states have return successors, (1455), 1414 states have call predecessors, (1455), 1412 states have call successors, (1455) [2022-07-22 11:14:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 8143 transitions. [2022-07-22 11:14:33,757 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 8143 transitions. Word has length 57 [2022-07-22 11:14:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:14:33,757 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 8143 transitions. [2022-07-22 11:14:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:14:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 8143 transitions. [2022-07-22 11:14:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 11:14:33,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:14:33,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:14:33,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 11:14:33,760 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:14:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:14:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash -966339802, now seen corresponding path program 1 times [2022-07-22 11:14:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:14:33,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094405205] [2022-07-22 11:14:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:14:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:14:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 11:14:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:14:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:14:33,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094405205] [2022-07-22 11:14:33,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094405205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:14:33,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:14:33,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 11:14:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171376465] [2022-07-22 11:14:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:14:33,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 11:14:33,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:14:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 11:14:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:14:33,931 INFO L87 Difference]: Start difference. First operand 5516 states and 8143 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:14:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:14:39,393 INFO L93 Difference]: Finished difference Result 6087 states and 9038 transitions. [2022-07-22 11:14:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 11:14:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-07-22 11:14:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:14:39,408 INFO L225 Difference]: With dead ends: 6087 [2022-07-22 11:14:39,408 INFO L226 Difference]: Without dead ends: 5932 [2022-07-22 11:14:39,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:14:39,411 INFO L413 NwaCegarLoop]: 2153 mSDtfsCounter, 3483 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 4502 mSolverCounterSat, 2194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 6696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 4502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:14:39,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 4791 Invalid, 6696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 4502 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 11:14:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-07-22 11:14:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5419. [2022-07-22 11:14:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 3756 states have (on average 1.3772630457933972) internal successors, (5173), 3856 states have internal predecessors, (5173), 1419 states have call successors, (1419), 238 states have call predecessors, (1419), 243 states have return successors, (1424), 1383 states have call predecessors, (1424), 1409 states have call successors, (1424) [2022-07-22 11:14:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 8016 transitions. [2022-07-22 11:14:39,735 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 8016 transitions. Word has length 57 [2022-07-22 11:14:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:14:39,735 INFO L495 AbstractCegarLoop]: Abstraction has 5419 states and 8016 transitions. [2022-07-22 11:14:39,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:14:39,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 8016 transitions. [2022-07-22 11:14:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 11:14:39,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:14:39,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:14:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 11:14:39,738 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:14:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:14:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1271877099, now seen corresponding path program 1 times [2022-07-22 11:14:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:14:39,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742051075] [2022-07-22 11:14:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:14:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:14:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 11:14:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:14:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 11:14:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 11:14:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 11:14:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 11:14:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:14:39,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:14:39,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742051075] [2022-07-22 11:14:39,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742051075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:14:39,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:14:39,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:14:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181556954] [2022-07-22 11:14:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:14:39,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:14:39,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:14:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:14:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:14:39,989 INFO L87 Difference]: Start difference. First operand 5419 states and 8016 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-22 11:14:43,535 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 [] [2022-07-22 11:14:49,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:51,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:14:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:14:56,295 INFO L93 Difference]: Finished difference Result 6203 states and 9254 transitions. [2022-07-22 11:14:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 11:14:56,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-07-22 11:14:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:14:56,310 INFO L225 Difference]: With dead ends: 6203 [2022-07-22 11:14:56,310 INFO L226 Difference]: Without dead ends: 6150 [2022-07-22 11:14:56,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-22 11:14:56,313 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 1046 mSDsluCounter, 6366 mSDsCounter, 0 mSdLazyCounter, 8798 mSolverCounterSat, 547 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 8581 SdHoareTripleChecker+Invalid, 9347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 8798 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:14:56,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 8581 Invalid, 9347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 8798 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2022-07-22 11:14:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2022-07-22 11:14:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 5406. [2022-07-22 11:14:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 3748 states have (on average 1.3775346851654215) internal successors, (5163), 3847 states have internal predecessors, (5163), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1421), 1381 states have call predecessors, (1421), 1406 states have call successors, (1421) [2022-07-22 11:14:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 8000 transitions. [2022-07-22 11:14:56,587 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 8000 transitions. Word has length 63 [2022-07-22 11:14:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:14:56,587 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 8000 transitions. [2022-07-22 11:14:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-22 11:14:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 8000 transitions. [2022-07-22 11:14:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:14:56,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:14:56,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:14:56,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 11:14:56,590 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:14:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:14:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 707742519, now seen corresponding path program 1 times [2022-07-22 11:14:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:14:56,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485543488] [2022-07-22 11:14:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:14:56,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:14:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 11:14:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:14:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:14:56,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:14:56,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485543488] [2022-07-22 11:14:56,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485543488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:14:56,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:14:56,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 11:14:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701529367] [2022-07-22 11:14:56,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:14:56,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:14:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:14:56,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:14:56,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:14:56,776 INFO L87 Difference]: Start difference. First operand 5406 states and 8000 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 11:15:00,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:15:04,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []