./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 35987657 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-?-3598765 [2022-07-20 22:33:15,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:33:15,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:33:15,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:33:15,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:33:15,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:33:15,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:33:15,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:33:15,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:33:15,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:33:15,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:33:15,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:33:15,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:33:15,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:33:15,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:33:15,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:33:15,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:33:15,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:33:15,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:33:15,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:33:15,546 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:33:15,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:33:15,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:33:15,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:33:15,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:33:15,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:33:15,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:33:15,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:33:15,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:33:15,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:33:15,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:33:15,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:33:15,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:33:15,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:33:15,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:33:15,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:33:15,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:33:15,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:33:15,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:33:15,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:33:15,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:33:15,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:33:15,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:33:15,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:33:15,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:33:15,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:33:15,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:33:15,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:33:15,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:33:15,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:33:15,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:33:15,615 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:33:15,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:33:15,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:33:15,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:33:15,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:33:15,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:33:15,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:33:15,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:33:15,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:33:15,618 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:33:15,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:33:15,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:33:15,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:33:15,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:33:15,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:33:15,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:33:15,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:33:15,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:33:15,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:33:15,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:33:15,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:33:15,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:33:15,620 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:33:15,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:33:15,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:33:15,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2022-07-20 22:33:15,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:33:15,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:33:15,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:33:15,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:33:15,932 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:33:15,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-07-20 22:33:15,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59ad6e00/786bb30e151c4fa9ba9f9d49756d26be/FLAGbd913ec30 [2022-07-20 22:33:16,711 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:33:16,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-07-20 22:33:16,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59ad6e00/786bb30e151c4fa9ba9f9d49756d26be/FLAGbd913ec30 [2022-07-20 22:33:16,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59ad6e00/786bb30e151c4fa9ba9f9d49756d26be [2022-07-20 22:33:16,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:33:16,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:33:16,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:33:16,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:33:16,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:33:16,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:33:16" (1/1) ... [2022-07-20 22:33:16,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea7c2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:16, skipping insertion in model container [2022-07-20 22:33:16,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:33:16" (1/1) ... [2022-07-20 22:33:16,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:33:16,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:33:17,727 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] [2022-07-20 22:33:18,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:33:18,520 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:33:18,614 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] [2022-07-20 22:33:18,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:33:18,926 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:33:18,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18 WrapperNode [2022-07-20 22:33:18,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:33:18,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:33:18,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:33:18,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:33:18,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,210 INFO L137 Inliner]: procedures = 248, calls = 2334, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4784 [2022-07-20 22:33:19,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:33:19,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:33:19,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:33:19,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:33:19,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:33:19,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:33:19,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:33:19,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:33:19,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (1/1) ... [2022-07-20 22:33:19,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:33:19,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:33:19,665 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) [2022-07-20 22:33:19,692 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 [2022-07-20 22:33:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-07-20 22:33:19,708 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-07-20 22:33:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-07-20 22:33:19,708 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-07-20 22:33:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-07-20 22:33:19,708 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-07-20 22:33:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-07-20 22:33:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-07-20 22:33:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-07-20 22:33:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-07-20 22:33:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 22:33:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 22:33:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-07-20 22:33:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-07-20 22:33:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-07-20 22:33:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-07-20 22:33:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-07-20 22:33:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-07-20 22:33:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 22:33:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 22:33:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-07-20 22:33:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-07-20 22:33:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 22:33:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 22:33:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-20 22:33:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-20 22:33:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-07-20 22:33:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-07-20 22:33:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-07-20 22:33:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-07-20 22:33:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 22:33:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-07-20 22:33:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-07-20 22:33:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-07-20 22:33:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-07-20 22:33:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 22:33:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-07-20 22:33:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-07-20 22:33:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-07-20 22:33:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-07-20 22:33:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-07-20 22:33:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-07-20 22:33:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-07-20 22:33:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-07-20 22:33:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 22:33:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 22:33:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-07-20 22:33:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-07-20 22:33:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-07-20 22:33:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-07-20 22:33:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-07-20 22:33:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-07-20 22:33:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-20 22:33:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-20 22:33:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-07-20 22:33:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-07-20 22:33:19,718 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-07-20 22:33:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-07-20 22:33:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-07-20 22:33:19,719 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-07-20 22:33:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-20 22:33:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-07-20 22:33:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-07-20 22:33:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-07-20 22:33:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-07-20 22:33:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-07-20 22:33:19,720 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-07-20 22:33:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-07-20 22:33:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-07-20 22:33:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-20 22:33:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-07-20 22:33:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-07-20 22:33:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 22:33:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-07-20 22:33:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-07-20 22:33:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-07-20 22:33:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-07-20 22:33:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-07-20 22:33:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-07-20 22:33:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-07-20 22:33:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-07-20 22:33:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-20 22:33:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-20 22:33:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 22:33:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 22:33:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-07-20 22:33:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-07-20 22:33:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-07-20 22:33:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-07-20 22:33:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-07-20 22:33:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-07-20 22:33:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-07-20 22:33:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-07-20 22:33:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-20 22:33:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-20 22:33:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-07-20 22:33:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-07-20 22:33:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 22:33:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-07-20 22:33:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-07-20 22:33:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-07-20 22:33:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-07-20 22:33:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-07-20 22:33:19,728 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-07-20 22:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 22:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-07-20 22:33:19,729 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-07-20 22:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-07-20 22:33:19,729 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-07-20 22:33:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:33:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-07-20 22:33:19,730 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-07-20 22:33:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-07-20 22:33:19,730 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-07-20 22:33:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-07-20 22:33:19,732 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-07-20 22:33:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 22:33:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-20 22:33:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-20 22:33:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-07-20 22:33:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-07-20 22:33:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-07-20 22:33:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-07-20 22:33:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-07-20 22:33:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-07-20 22:33:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-07-20 22:33:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-07-20 22:33:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-07-20 22:33:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-07-20 22:33:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-07-20 22:33:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-07-20 22:33:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-07-20 22:33:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-07-20 22:33:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-07-20 22:33:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-07-20 22:33:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-07-20 22:33:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-07-20 22:33:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-07-20 22:33:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-07-20 22:33:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-07-20 22:33:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-07-20 22:33:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-07-20 22:33:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-07-20 22:33:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-07-20 22:33:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-07-20 22:33:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:33:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-07-20 22:33:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-07-20 22:33:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-07-20 22:33:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-07-20 22:33:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-07-20 22:33:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-07-20 22:33:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-07-20 22:33:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-07-20 22:33:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:33:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:33:20,444 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:33:20,447 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:33:20,500 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:20,531 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-07-20 22:33:20,531 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-07-20 22:33:20,536 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:20,580 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-07-20 22:33:20,580 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-07-20 22:33:20,880 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:20,927 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-07-20 22:33:20,928 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-07-20 22:33:21,227 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,231 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-20 22:33:21,232 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-20 22:33:21,348 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,372 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-07-20 22:33:21,373 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-07-20 22:33:21,492 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,497 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-20 22:33:21,498 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-20 22:33:21,500 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,518 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-07-20 22:33:21,518 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-07-20 22:33:21,525 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,574 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-07-20 22:33:21,574 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-07-20 22:33:21,893 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,894 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,895 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,896 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,896 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,898 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,906 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,907 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,911 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,929 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,930 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:21,931 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:33:30,725 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##386: assume false; [2022-07-20 22:33:30,725 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##387: assume !false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##425: assume !false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##424: assume false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##489: assume !false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##488: assume false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##533: assume !false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##532: assume false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##543: assume !false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##542: assume false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2022-07-20 22:33:30,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##588: assume !false; [2022-07-20 22:33:30,727 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##587: assume false; [2022-07-20 22:33:30,820 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:33:30,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:33:30,838 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2022-07-20 22:33:30,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:33:30 BoogieIcfgContainer [2022-07-20 22:33:30,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:33:30,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:33:30,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:33:30,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:33:30,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:33:16" (1/3) ... [2022-07-20 22:33:30,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7882e055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:33:30, skipping insertion in model container [2022-07-20 22:33:30,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:33:18" (2/3) ... [2022-07-20 22:33:30,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7882e055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:33:30, skipping insertion in model container [2022-07-20 22:33:30,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:33:30" (3/3) ... [2022-07-20 22:33:30,849 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-07-20 22:33:30,861 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:33:30,861 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:33:30,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:33:30,936 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@8b7baf3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d1b2631 [2022-07-20 22:33:30,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:33:30,945 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) [2022-07-20 22:33:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 22:33:30,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:30,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:33:30,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -773300714, now seen corresponding path program 1 times [2022-07-20 22:33:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:30,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035749384] [2022-07-20 22:33:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:31,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:31,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035749384] [2022-07-20 22:33:31,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035749384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:31,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:31,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:33:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444193258] [2022-07-20 22:33:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:31,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:33:31,458 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) [2022-07-20 22:33:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:31,714 INFO L93 Difference]: Finished difference Result 3554 states and 5647 transitions. [2022-07-20 22:33:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:31,728 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 [2022-07-20 22:33:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:31,756 INFO L225 Difference]: With dead ends: 3554 [2022-07-20 22:33:31,757 INFO L226 Difference]: Without dead ends: 1774 [2022-07-20 22:33:31,771 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 [2022-07-20 22:33:31,774 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 [2022-07-20 22:33:31,775 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] [2022-07-20 22:33:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-07-20 22:33:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1773. [2022-07-20 22:33:31,947 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) [2022-07-20 22:33:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2637 transitions. [2022-07-20 22:33:31,966 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2637 transitions. Word has length 15 [2022-07-20 22:33:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:31,966 INFO L495 AbstractCegarLoop]: Abstraction has 1773 states and 2637 transitions. [2022-07-20 22:33:31,967 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) [2022-07-20 22:33:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2637 transitions. [2022-07-20 22:33:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 22:33:31,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:31,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:33:31,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:33:31,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash 971741108, now seen corresponding path program 1 times [2022-07-20 22:33:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:31,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337031350] [2022-07-20 22:33:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:32,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:32,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337031350] [2022-07-20 22:33:32,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337031350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:33:32,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443272324] [2022-07-20 22:33:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:32,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:33:32,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:33:32,147 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) [2022-07-20 22:33:32,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 22:33:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:32,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:33:32,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:33:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 22:33:32,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:33:32,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443272324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:32,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:33:32,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-20 22:33:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570681423] [2022-07-20 22:33:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:33:32,794 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) [2022-07-20 22:33:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:32,951 INFO L93 Difference]: Finished difference Result 1843 states and 2725 transitions. [2022-07-20 22:33:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:32,952 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 [2022-07-20 22:33:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:32,964 INFO L225 Difference]: With dead ends: 1843 [2022-07-20 22:33:32,964 INFO L226 Difference]: Without dead ends: 1824 [2022-07-20 22:33:32,965 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 [2022-07-20 22:33:32,967 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 [2022-07-20 22:33:32,968 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] [2022-07-20 22:33:32,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-07-20 22:33:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1815. [2022-07-20 22:33:33,039 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) [2022-07-20 22:33:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2689 transitions. [2022-07-20 22:33:33,057 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2689 transitions. Word has length 17 [2022-07-20 22:33:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:33,057 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2689 transitions. [2022-07-20 22:33:33,058 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) [2022-07-20 22:33:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2689 transitions. [2022-07-20 22:33:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 22:33:33,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:33,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:33:33,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 22:33:33,275 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 [2022-07-20 22:33:33,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:33,276 INFO L85 PathProgramCache]: Analyzing trace with hash 957396199, now seen corresponding path program 1 times [2022-07-20 22:33:33,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:33,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732273655] [2022-07-20 22:33:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:33,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:33,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732273655] [2022-07-20 22:33:33,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732273655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:33:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144086446] [2022-07-20 22:33:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:33,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:33:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:33:33,381 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) [2022-07-20 22:33:33,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 22:33:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:33,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 22:33:33,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:33:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 22:33:33,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:33:33,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144086446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:33,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:33:33,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-20 22:33:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156073063] [2022-07-20 22:33:33,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:33,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:33:33,945 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) [2022-07-20 22:33:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:34,101 INFO L93 Difference]: Finished difference Result 1831 states and 2708 transitions. [2022-07-20 22:33:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:34,102 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 [2022-07-20 22:33:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:34,113 INFO L225 Difference]: With dead ends: 1831 [2022-07-20 22:33:34,113 INFO L226 Difference]: Without dead ends: 1815 [2022-07-20 22:33:34,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:33:34,116 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 [2022-07-20 22:33:34,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5215 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 22:33:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-07-20 22:33:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1815. [2022-07-20 22:33:34,184 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) [2022-07-20 22:33:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2688 transitions. [2022-07-20 22:33:34,197 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2688 transitions. Word has length 17 [2022-07-20 22:33:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:34,198 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2688 transitions. [2022-07-20 22:33:34,198 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) [2022-07-20 22:33:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2688 transitions. [2022-07-20 22:33:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-20 22:33:34,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:34,199 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] [2022-07-20 22:33:34,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 22:33:34,415 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 [2022-07-20 22:33:34,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash 805678958, now seen corresponding path program 1 times [2022-07-20 22:33:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600071947] [2022-07-20 22:33:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:34,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:34,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600071947] [2022-07-20 22:33:34,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600071947] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:33:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827323667] [2022-07-20 22:33:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:34,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:33:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:33:34,639 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) [2022-07-20 22:33:34,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 22:33:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:35,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 22:33:35,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:33:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:35,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 22:33:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:35,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827323667] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 22:33:35,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 22:33:35,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-20 22:33:35,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83055926] [2022-07-20 22:33:35,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 22:33:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:33:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:33:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:33:35,237 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) [2022-07-20 22:33:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:35,418 INFO L93 Difference]: Finished difference Result 3631 states and 5379 transitions. [2022-07-20 22:33:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:33:35,419 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 [2022-07-20 22:33:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:35,430 INFO L225 Difference]: With dead ends: 3631 [2022-07-20 22:33:35,430 INFO L226 Difference]: Without dead ends: 1821 [2022-07-20 22:33:35,437 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 [2022-07-20 22:33:35,438 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 [2022-07-20 22:33:35,438 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] [2022-07-20 22:33:35,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-07-20 22:33:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2022-07-20 22:33:35,500 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) [2022-07-20 22:33:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2694 transitions. [2022-07-20 22:33:35,514 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2694 transitions. Word has length 21 [2022-07-20 22:33:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:35,514 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2694 transitions. [2022-07-20 22:33:35,515 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) [2022-07-20 22:33:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2694 transitions. [2022-07-20 22:33:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 22:33:35,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:35,516 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] [2022-07-20 22:33:35,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 22:33:35,738 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 [2022-07-20 22:33:35,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -130039224, now seen corresponding path program 2 times [2022-07-20 22:33:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809141757] [2022-07-20 22:33:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:35,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809141757] [2022-07-20 22:33:35,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809141757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:35,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:35,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:33:35,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090260326] [2022-07-20 22:33:35,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:35,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:33:35,942 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) [2022-07-20 22:33:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:36,308 INFO L93 Difference]: Finished difference Result 4647 states and 6936 transitions. [2022-07-20 22:33:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:36,309 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 [2022-07-20 22:33:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:36,329 INFO L225 Difference]: With dead ends: 4647 [2022-07-20 22:33:36,329 INFO L226 Difference]: Without dead ends: 3432 [2022-07-20 22:33:36,336 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 [2022-07-20 22:33:36,337 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 [2022-07-20 22:33:36,337 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] [2022-07-20 22:33:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2022-07-20 22:33:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 3401. [2022-07-20 22:33:36,508 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) [2022-07-20 22:33:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 5072 transitions. [2022-07-20 22:33:36,529 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 5072 transitions. Word has length 27 [2022-07-20 22:33:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:36,530 INFO L495 AbstractCegarLoop]: Abstraction has 3401 states and 5072 transitions. [2022-07-20 22:33:36,530 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) [2022-07-20 22:33:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 5072 transitions. [2022-07-20 22:33:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-20 22:33:36,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:36,536 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] [2022-07-20 22:33:36,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:33:36,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1667935007, now seen corresponding path program 1 times [2022-07-20 22:33:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:36,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969436146] [2022-07-20 22:33:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:36,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:33:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:36,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969436146] [2022-07-20 22:33:36,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969436146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:36,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:36,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:33:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297620965] [2022-07-20 22:33:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:33:36,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:33:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:33:36,767 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) [2022-07-20 22:33:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:41,094 INFO L93 Difference]: Finished difference Result 4210 states and 6250 transitions. [2022-07-20 22:33:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:33:41,094 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 [2022-07-20 22:33:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:41,121 INFO L225 Difference]: With dead ends: 4210 [2022-07-20 22:33:41,121 INFO L226 Difference]: Without dead ends: 4205 [2022-07-20 22:33:41,124 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 [2022-07-20 22:33:41,126 INFO L413 NwaCegarLoop]: 2484 mSDtfsCounter, 2469 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 1458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 4.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:33:41,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 4455 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1458 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-20 22:33:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2022-07-20 22:33:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4176. [2022-07-20 22:33:41,322 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) [2022-07-20 22:33:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6205 transitions. [2022-07-20 22:33:41,339 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6205 transitions. Word has length 40 [2022-07-20 22:33:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:41,340 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6205 transitions. [2022-07-20 22:33:41,340 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) [2022-07-20 22:33:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6205 transitions. [2022-07-20 22:33:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 22:33:41,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:41,345 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] [2022-07-20 22:33:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:33:41,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash 618913342, now seen corresponding path program 1 times [2022-07-20 22:33:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:41,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157109733] [2022-07-20 22:33:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:33:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157109733] [2022-07-20 22:33:41,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157109733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:41,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:41,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:33:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223425916] [2022-07-20 22:33:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:41,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:33:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:33:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:33:41,617 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) [2022-07-20 22:33:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:47,123 INFO L93 Difference]: Finished difference Result 4223 states and 6262 transitions. [2022-07-20 22:33:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:33:47,123 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 [2022-07-20 22:33:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:47,145 INFO L225 Difference]: With dead ends: 4223 [2022-07-20 22:33:47,145 INFO L226 Difference]: Without dead ends: 4214 [2022-07-20 22:33:47,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:33:47,149 INFO L413 NwaCegarLoop]: 2437 mSDtfsCounter, 6229 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 3677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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, 5.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:33:47,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6361 Valid, 5116 Invalid, 7934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3677 Valid, 4257 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-20 22:33:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2022-07-20 22:33:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4176. [2022-07-20 22:33:47,357 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) [2022-07-20 22:33:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6203 transitions. [2022-07-20 22:33:47,374 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6203 transitions. Word has length 41 [2022-07-20 22:33:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:47,375 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6203 transitions. [2022-07-20 22:33:47,376 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) [2022-07-20 22:33:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6203 transitions. [2022-07-20 22:33:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-20 22:33:47,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:47,378 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] [2022-07-20 22:33:47,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:33:47,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1117126507, now seen corresponding path program 1 times [2022-07-20 22:33:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:47,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697059563] [2022-07-20 22:33:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:47,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:33:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:47,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697059563] [2022-07-20 22:33:47,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697059563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:47,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:47,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:33:47,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774471961] [2022-07-20 22:33:47,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:47,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:33:47,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:33:47,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:33:47,589 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) [2022-07-20 22:33:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:52,914 INFO L93 Difference]: Finished difference Result 4216 states and 6251 transitions. [2022-07-20 22:33:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:33:52,915 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 [2022-07-20 22:33:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:52,938 INFO L225 Difference]: With dead ends: 4216 [2022-07-20 22:33:52,939 INFO L226 Difference]: Without dead ends: 4207 [2022-07-20 22:33:52,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-20 22:33:52,941 INFO L413 NwaCegarLoop]: 2468 mSDtfsCounter, 6176 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 3655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 5.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:33:52,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 5142 Invalid, 7907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3655 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-20 22:33:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-07-20 22:33:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4176. [2022-07-20 22:33:53,108 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) [2022-07-20 22:33:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6201 transitions. [2022-07-20 22:33:53,123 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6201 transitions. Word has length 42 [2022-07-20 22:33:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:53,124 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 6201 transitions. [2022-07-20 22:33:53,124 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) [2022-07-20 22:33:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6201 transitions. [2022-07-20 22:33:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 22:33:53,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:53,126 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] [2022-07-20 22:33:53,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:33:53,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2075772706, now seen corresponding path program 1 times [2022-07-20 22:33:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:53,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18139904] [2022-07-20 22:33:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:53,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:53,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18139904] [2022-07-20 22:33:53,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18139904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:53,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:53,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:33:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063470603] [2022-07-20 22:33:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:33:53,296 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) [2022-07-20 22:33:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:53,462 INFO L93 Difference]: Finished difference Result 6829 states and 10118 transitions. [2022-07-20 22:33:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:53,463 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 [2022-07-20 22:33:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:53,513 INFO L225 Difference]: With dead ends: 6829 [2022-07-20 22:33:53,514 INFO L226 Difference]: Without dead ends: 6526 [2022-07-20 22:33:53,521 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 [2022-07-20 22:33:53,523 INFO L413 NwaCegarLoop]: 3764 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, 5654 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 [2022-07-20 22:33:53,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 5654 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:33:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2022-07-20 22:33:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 6445. [2022-07-20 22:33:53,862 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) [2022-07-20 22:33:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 9608 transitions. [2022-07-20 22:33:53,887 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 9608 transitions. Word has length 43 [2022-07-20 22:33:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:53,887 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 9608 transitions. [2022-07-20 22:33:53,887 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) [2022-07-20 22:33:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 9608 transitions. [2022-07-20 22:33:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 22:33:53,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:53,889 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] [2022-07-20 22:33:53,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:33:53,890 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash 326032775, now seen corresponding path program 1 times [2022-07-20 22:33:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:53,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696684102] [2022-07-20 22:33:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:53,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-20 22:33:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:54,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696684102] [2022-07-20 22:33:54,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696684102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:54,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:54,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:33:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134653090] [2022-07-20 22:33:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:54,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:33:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:54,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:33:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:33:54,055 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) [2022-07-20 22:33:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:57,132 INFO L93 Difference]: Finished difference Result 6473 states and 9642 transitions. [2022-07-20 22:33:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:33:57,132 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 [2022-07-20 22:33:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:57,162 INFO L225 Difference]: With dead ends: 6473 [2022-07-20 22:33:57,163 INFO L226 Difference]: Without dead ends: 6427 [2022-07-20 22:33:57,170 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 [2022-07-20 22:33:57,171 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, 2.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:33:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 5566 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-20 22:33:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6427 states. [2022-07-20 22:33:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6427 to 6426. [2022-07-20 22:33:57,462 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) [2022-07-20 22:33:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9578 transitions. [2022-07-20 22:33:57,485 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9578 transitions. Word has length 43 [2022-07-20 22:33:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:57,486 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9578 transitions. [2022-07-20 22:33:57,487 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) [2022-07-20 22:33:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9578 transitions. [2022-07-20 22:33:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 22:33:57,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:57,489 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] [2022-07-20 22:33:57,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:33:57,489 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1127454167, now seen corresponding path program 1 times [2022-07-20 22:33:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181015543] [2022-07-20 22:33:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:57,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181015543] [2022-07-20 22:33:57,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181015543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:57,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:57,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:33:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443910036] [2022-07-20 22:33:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:33:57,623 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) [2022-07-20 22:33:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:57,893 INFO L93 Difference]: Finished difference Result 6429 states and 9580 transitions. [2022-07-20 22:33:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:57,894 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 [2022-07-20 22:33:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:57,923 INFO L225 Difference]: With dead ends: 6429 [2022-07-20 22:33:57,923 INFO L226 Difference]: Without dead ends: 6426 [2022-07-20 22:33:57,929 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 [2022-07-20 22:33:57,930 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 [2022-07-20 22:33:57,930 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] [2022-07-20 22:33:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6426 states. [2022-07-20 22:33:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6426 to 6426. [2022-07-20 22:33:58,226 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) [2022-07-20 22:33:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9577 transitions. [2022-07-20 22:33:58,249 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9577 transitions. Word has length 43 [2022-07-20 22:33:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:58,250 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9577 transitions. [2022-07-20 22:33:58,250 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) [2022-07-20 22:33:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9577 transitions. [2022-07-20 22:33:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-20 22:33:58,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:58,252 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] [2022-07-20 22:33:58,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:33:58,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1697051292, now seen corresponding path program 1 times [2022-07-20 22:33:58,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:58,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371701430] [2022-07-20 22:33:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:58,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 22:33:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:33:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:33:58,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:58,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371701430] [2022-07-20 22:33:58,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371701430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:58,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:58,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:33:58,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022995669] [2022-07-20 22:33:58,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:58,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:33:58,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:33:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:33:58,476 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) [2022-07-20 22:34:00,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:02,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:06,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:34:11,949 INFO L93 Difference]: Finished difference Result 13145 states and 19700 transitions. [2022-07-20 22:34:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:34:11,949 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 [2022-07-20 22:34:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:34:11,979 INFO L225 Difference]: With dead ends: 13145 [2022-07-20 22:34:11,980 INFO L226 Difference]: Without dead ends: 7299 [2022-07-20 22:34:12,003 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 [2022-07-20 22:34:12,004 INFO L413 NwaCegarLoop]: 2351 mSDtfsCounter, 680 mSDsluCounter, 8893 mSDsCounter, 0 mSdLazyCounter, 9208 mSolverCounterSat, 498 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 11244 SdHoareTripleChecker+Invalid, 9708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 9208 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:34:12,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 11244 Invalid, 9708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 9208 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-07-20 22:34:12,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2022-07-20 22:34:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 6435. [2022-07-20 22:34:12,341 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) [2022-07-20 22:34:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6435 states to 6435 states and 9589 transitions. [2022-07-20 22:34:12,365 INFO L78 Accepts]: Start accepts. Automaton has 6435 states and 9589 transitions. Word has length 46 [2022-07-20 22:34:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:34:12,367 INFO L495 AbstractCegarLoop]: Abstraction has 6435 states and 9589 transitions. [2022-07-20 22:34:12,367 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) [2022-07-20 22:34:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6435 states and 9589 transitions. [2022-07-20 22:34:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-20 22:34:12,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:34:12,369 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] [2022-07-20 22:34:12,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:34:12,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:34:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:34:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1485700379, now seen corresponding path program 1 times [2022-07-20 22:34:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:34:12,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696066860] [2022-07-20 22:34:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:34:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:34:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 22:34:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:34:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:34:12,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:34:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696066860] [2022-07-20 22:34:12,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696066860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:34:12,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:34:12,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:34:12,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312270495] [2022-07-20 22:34:12,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:34:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:34:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:34:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:34:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:34:12,612 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) [2022-07-20 22:34:15,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:17,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:21,098 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 [] [2022-07-20 22:34:25,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:34:25,010 INFO L93 Difference]: Finished difference Result 12459 states and 18675 transitions. [2022-07-20 22:34:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:34:25,010 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 [2022-07-20 22:34:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:34:25,038 INFO L225 Difference]: With dead ends: 12459 [2022-07-20 22:34:25,039 INFO L226 Difference]: Without dead ends: 7261 [2022-07-20 22:34:25,057 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 [2022-07-20 22:34:25,058 INFO L413 NwaCegarLoop]: 2318 mSDtfsCounter, 643 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 5202 mSolverCounterSat, 496 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 5701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 5202 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:34:25,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 6988 Invalid, 5701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 5202 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2022-07-20 22:34:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-07-20 22:34:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6429. [2022-07-20 22:34:25,421 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) [2022-07-20 22:34:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 9579 transitions. [2022-07-20 22:34:25,448 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 9579 transitions. Word has length 46 [2022-07-20 22:34:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:34:25,449 INFO L495 AbstractCegarLoop]: Abstraction has 6429 states and 9579 transitions. [2022-07-20 22:34:25,449 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) [2022-07-20 22:34:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 9579 transitions. [2022-07-20 22:34:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 22:34:25,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:34:25,451 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] [2022-07-20 22:34:25,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:34:25,451 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:34:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:34:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1399500385, now seen corresponding path program 1 times [2022-07-20 22:34:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:34:25,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997618418] [2022-07-20 22:34:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:34:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:34:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:34:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:34:25,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997618418] [2022-07-20 22:34:25,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997618418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:34:25,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:34:25,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:34:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706898828] [2022-07-20 22:34:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:34:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:34:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:34:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:34:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:34:25,605 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) [2022-07-20 22:34:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:34:25,923 INFO L93 Difference]: Finished difference Result 6521 states and 9703 transitions. [2022-07-20 22:34:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:34:25,923 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 [2022-07-20 22:34:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:34:25,946 INFO L225 Difference]: With dead ends: 6521 [2022-07-20 22:34:25,947 INFO L226 Difference]: Without dead ends: 6490 [2022-07-20 22:34:25,950 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 [2022-07-20 22:34:25,951 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 160 mSDsluCounter, 10441 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 13041 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:34:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 13041 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 22:34:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2022-07-20 22:34:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 6432. [2022-07-20 22:34:26,261 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) [2022-07-20 22:34:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 9582 transitions. [2022-07-20 22:34:26,285 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 9582 transitions. Word has length 45 [2022-07-20 22:34:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:34:26,285 INFO L495 AbstractCegarLoop]: Abstraction has 6432 states and 9582 transitions. [2022-07-20 22:34:26,285 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) [2022-07-20 22:34:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 9582 transitions. [2022-07-20 22:34:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 22:34:26,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:34:26,287 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] [2022-07-20 22:34:26,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:34:26,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:34:26,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:34:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash 388874719, now seen corresponding path program 1 times [2022-07-20 22:34:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:34:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214106591] [2022-07-20 22:34:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:34:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:34:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:34:26,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:34:26,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214106591] [2022-07-20 22:34:26,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214106591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:34:26,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:34:26,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:34:26,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010352948] [2022-07-20 22:34:26,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:34:26,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:34:26,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:34:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:34:26,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:34:26,456 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) [2022-07-20 22:34:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:34:26,747 INFO L93 Difference]: Finished difference Result 6517 states and 9696 transitions. [2022-07-20 22:34:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:34:26,747 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 [2022-07-20 22:34:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:34:26,778 INFO L225 Difference]: With dead ends: 6517 [2022-07-20 22:34:26,778 INFO L226 Difference]: Without dead ends: 6486 [2022-07-20 22:34:26,785 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 [2022-07-20 22:34:26,787 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 [2022-07-20 22:34:26,790 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] [2022-07-20 22:34:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2022-07-20 22:34:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6425. [2022-07-20 22:34:27,187 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) [2022-07-20 22:34:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9572 transitions. [2022-07-20 22:34:27,212 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9572 transitions. Word has length 45 [2022-07-20 22:34:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:34:27,213 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 9572 transitions. [2022-07-20 22:34:27,213 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) [2022-07-20 22:34:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9572 transitions. [2022-07-20 22:34:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-20 22:34:27,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:34:27,215 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] [2022-07-20 22:34:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:34:27,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:34:27,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:34:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash 195220579, now seen corresponding path program 1 times [2022-07-20 22:34:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:34:27,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644624418] [2022-07-20 22:34:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:34:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:34:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 22:34:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:34:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:34:27,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:34:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644624418] [2022-07-20 22:34:27,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644624418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:34:27,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:34:27,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:34:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257227080] [2022-07-20 22:34:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:34:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:34:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:34:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:34:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:34:27,441 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) [2022-07-20 22:34:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:34:34,326 INFO L93 Difference]: Finished difference Result 7285 states and 10963 transitions. [2022-07-20 22:34:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 22:34:34,327 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 [2022-07-20 22:34:34,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:34:34,358 INFO L225 Difference]: With dead ends: 7285 [2022-07-20 22:34:34,359 INFO L226 Difference]: Without dead ends: 7255 [2022-07-20 22:34:34,364 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 [2022-07-20 22:34:34,365 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 [2022-07-20 22:34:34,365 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] [2022-07-20 22:34:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7255 states. [2022-07-20 22:34:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7255 to 6423. [2022-07-20 22:34:34,715 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) [2022-07-20 22:34:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9568 transitions. [2022-07-20 22:34:34,740 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9568 transitions. Word has length 47 [2022-07-20 22:34:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:34:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9568 transitions. [2022-07-20 22:34:34,741 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) [2022-07-20 22:34:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9568 transitions. [2022-07-20 22:34:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-20 22:34:34,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:34:34,743 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] [2022-07-20 22:34:34,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:34:34,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:34:34,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:34:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash 479588916, now seen corresponding path program 1 times [2022-07-20 22:34:34,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:34:34,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402417299] [2022-07-20 22:34:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:34:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:34:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 22:34:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:34:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:34:35,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:34:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402417299] [2022-07-20 22:34:35,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402417299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:34:35,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:34:35,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:34:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987640312] [2022-07-20 22:34:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:34:35,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:34:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:34:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:34:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:34:35,034 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) [2022-07-20 22:34:38,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:42,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:46,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:34:51,007 INFO L93 Difference]: Finished difference Result 8481 states and 12866 transitions. [2022-07-20 22:34:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:34:51,008 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 [2022-07-20 22:34:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:34:51,039 INFO L225 Difference]: With dead ends: 8481 [2022-07-20 22:34:51,040 INFO L226 Difference]: Without dead ends: 8441 [2022-07-20 22:34:51,044 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 [2022-07-20 22:34:51,045 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 1077 mSDsluCounter, 11218 mSDsCounter, 0 mSdLazyCounter, 9627 mSolverCounterSat, 511 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 14028 SdHoareTripleChecker+Invalid, 10140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 9627 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:34:51,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 14028 Invalid, 10140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 9627 Invalid, 2 Unknown, 0 Unchecked, 15.5s Time] [2022-07-20 22:34:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2022-07-20 22:34:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 6423. [2022-07-20 22:34:51,411 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) [2022-07-20 22:34:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 9567 transitions. [2022-07-20 22:34:51,436 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 9567 transitions. Word has length 50 [2022-07-20 22:34:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:34:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 9567 transitions. [2022-07-20 22:34:51,437 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) [2022-07-20 22:34:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 9567 transitions. [2022-07-20 22:34:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 22:34:51,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:34:51,439 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] [2022-07-20 22:34:51,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:34:51,439 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:34:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:34:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1998052607, now seen corresponding path program 1 times [2022-07-20 22:34:51,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:34:51,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227010210] [2022-07-20 22:34:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:34:51,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:34:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-20 22:34:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:34:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:34:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:34:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:34:51,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227010210] [2022-07-20 22:34:51,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227010210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:34:51,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:34:51,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:34:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084648969] [2022-07-20 22:34:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:34:51,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:34:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:34:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:34:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:34:51,642 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) [2022-07-20 22:34:53,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:34:55,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:03,821 INFO L93 Difference]: Finished difference Result 7282 states and 10957 transitions. [2022-07-20 22:35:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:35:03,822 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 [2022-07-20 22:35:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:03,857 INFO L225 Difference]: With dead ends: 7282 [2022-07-20 22:35:03,857 INFO L226 Difference]: Without dead ends: 7252 [2022-07-20 22:35:03,864 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 [2022-07-20 22:35:03,865 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 1000 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 6266 mSolverCounterSat, 548 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 7014 SdHoareTripleChecker+Invalid, 6815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 6266 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:03,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 7014 Invalid, 6815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 6266 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-07-20 22:35:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2022-07-20 22:35:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 6420. [2022-07-20 22:35:04,263 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) [2022-07-20 22:35:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 9562 transitions. [2022-07-20 22:35:04,287 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 9562 transitions. Word has length 53 [2022-07-20 22:35:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:04,288 INFO L495 AbstractCegarLoop]: Abstraction has 6420 states and 9562 transitions. [2022-07-20 22:35:04,288 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) [2022-07-20 22:35:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 9562 transitions. [2022-07-20 22:35:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-20 22:35:04,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:04,290 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] [2022-07-20 22:35:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:35:04,290 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1566112443, now seen corresponding path program 1 times [2022-07-20 22:35:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:04,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780636797] [2022-07-20 22:35:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:35:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-20 22:35:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:04,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780636797] [2022-07-20 22:35:04,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780636797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:04,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:04,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:35:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691880014] [2022-07-20 22:35:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:35:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:35:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:35:04,506 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) [2022-07-20 22:35:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:10,045 INFO L93 Difference]: Finished difference Result 7279 states and 10952 transitions. [2022-07-20 22:35:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:35:10,046 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 [2022-07-20 22:35:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:10,064 INFO L225 Difference]: With dead ends: 7279 [2022-07-20 22:35:10,064 INFO L226 Difference]: Without dead ends: 7243 [2022-07-20 22:35:10,067 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 [2022-07-20 22:35:10,067 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, 5.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:10,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 6284 Invalid, 7086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-20 22:35:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7243 states. [2022-07-20 22:35:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7243 to 6411. [2022-07-20 22:35:10,414 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) [2022-07-20 22:35:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 9550 transitions. [2022-07-20 22:35:10,439 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 9550 transitions. Word has length 50 [2022-07-20 22:35:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:10,439 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 9550 transitions. [2022-07-20 22:35:10,439 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) [2022-07-20 22:35:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 9550 transitions. [2022-07-20 22:35:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-20 22:35:10,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:10,441 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] [2022-07-20 22:35:10,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:35:10,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2113042750, now seen corresponding path program 1 times [2022-07-20 22:35:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90706215] [2022-07-20 22:35:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 22:35:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:35:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:10,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:10,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90706215] [2022-07-20 22:35:10,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90706215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:10,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:10,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:35:10,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439277322] [2022-07-20 22:35:10,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:10,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:35:10,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:35:10,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:35:10,667 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) [2022-07-20 22:35:13,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:15,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:19,723 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 [] [2022-07-20 22:35:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:25,593 INFO L93 Difference]: Finished difference Result 7402 states and 11115 transitions. [2022-07-20 22:35:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:35:25,593 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 [2022-07-20 22:35:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:25,614 INFO L225 Difference]: With dead ends: 7402 [2022-07-20 22:35:25,614 INFO L226 Difference]: Without dead ends: 7308 [2022-07-20 22:35:25,619 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 [2022-07-20 22:35:25,619 INFO L413 NwaCegarLoop]: 2565 mSDtfsCounter, 835 mSDsluCounter, 9908 mSDsCounter, 0 mSdLazyCounter, 9489 mSolverCounterSat, 508 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 12473 SdHoareTripleChecker+Invalid, 10000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 9489 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:25,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 12473 Invalid, 10000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 9489 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2022-07-20 22:35:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2022-07-20 22:35:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 6419. [2022-07-20 22:35:26,004 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) [2022-07-20 22:35:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 9561 transitions. [2022-07-20 22:35:26,028 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 9561 transitions. Word has length 54 [2022-07-20 22:35:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:26,029 INFO L495 AbstractCegarLoop]: Abstraction has 6419 states and 9561 transitions. [2022-07-20 22:35:26,029 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) [2022-07-20 22:35:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 9561 transitions. [2022-07-20 22:35:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:35:26,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:26,031 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] [2022-07-20 22:35:26,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 22:35:26,031 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1879920607, now seen corresponding path program 1 times [2022-07-20 22:35:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:26,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606510730] [2022-07-20 22:35:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:26,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 22:35:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:35:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 22:35:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:35:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:26,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:26,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606510730] [2022-07-20 22:35:26,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606510730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:26,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:26,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:35:26,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751351910] [2022-07-20 22:35:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:35:26,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:26,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:35:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:35:26,302 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) [2022-07-20 22:35:28,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:30,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:36,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:40,436 INFO L93 Difference]: Finished difference Result 12075 states and 18069 transitions. [2022-07-20 22:35:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:35:40,437 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 [2022-07-20 22:35:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:40,460 INFO L225 Difference]: With dead ends: 12075 [2022-07-20 22:35:40,461 INFO L226 Difference]: Without dead ends: 7123 [2022-07-20 22:35:40,480 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 [2022-07-20 22:35:40,481 INFO L413 NwaCegarLoop]: 2208 mSDtfsCounter, 1011 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 7829 mSolverCounterSat, 542 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 8009 SdHoareTripleChecker+Invalid, 8373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 7829 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:40,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 8009 Invalid, 8373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 7829 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2022-07-20 22:35:40,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2022-07-20 22:35:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6265. [2022-07-20 22:35:40,775 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) [2022-07-20 22:35:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 9315 transitions. [2022-07-20 22:35:40,798 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 9315 transitions. Word has length 58 [2022-07-20 22:35:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:40,799 INFO L495 AbstractCegarLoop]: Abstraction has 6265 states and 9315 transitions. [2022-07-20 22:35:40,799 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) [2022-07-20 22:35:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 9315 transitions. [2022-07-20 22:35:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-20 22:35:40,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:40,801 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] [2022-07-20 22:35:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 22:35:40,801 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1760545175, now seen corresponding path program 1 times [2022-07-20 22:35:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:40,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492329174] [2022-07-20 22:35:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 22:35:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:35:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:41,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:41,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492329174] [2022-07-20 22:35:41,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492329174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:41,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:41,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:35:41,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049182050] [2022-07-20 22:35:41,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:35:41,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:35:41,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:35:41,074 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) [2022-07-20 22:35:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:48,352 INFO L93 Difference]: Finished difference Result 7124 states and 10703 transitions. [2022-07-20 22:35:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 22:35:48,352 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 [2022-07-20 22:35:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:48,368 INFO L225 Difference]: With dead ends: 7124 [2022-07-20 22:35:48,368 INFO L226 Difference]: Without dead ends: 7094 [2022-07-20 22:35:48,370 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 [2022-07-20 22:35:48,370 INFO L413 NwaCegarLoop]: 2189 mSDtfsCounter, 1643 mSDsluCounter, 6117 mSDsCounter, 0 mSdLazyCounter, 9019 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 8306 SdHoareTripleChecker+Invalid, 10260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 9019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:48,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 8306 Invalid, 10260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 9019 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-20 22:35:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-07-20 22:35:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 6263. [2022-07-20 22:35:48,672 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) [2022-07-20 22:35:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 9311 transitions. [2022-07-20 22:35:48,689 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 9311 transitions. Word has length 55 [2022-07-20 22:35:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:48,689 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 9311 transitions. [2022-07-20 22:35:48,689 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) [2022-07-20 22:35:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 9311 transitions. [2022-07-20 22:35:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:35:48,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:48,692 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] [2022-07-20 22:35:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 22:35:48,692 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:48,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 460730707, now seen corresponding path program 1 times [2022-07-20 22:35:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:48,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810879829] [2022-07-20 22:35:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:48,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:35:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:35:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-20 22:35:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:48,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810879829] [2022-07-20 22:35:48,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810879829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:48,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:48,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:35:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545177039] [2022-07-20 22:35:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:35:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:35:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:35:48,883 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) [2022-07-20 22:35:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:54,557 INFO L93 Difference]: Finished difference Result 6408 states and 9506 transitions. [2022-07-20 22:35:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 22:35:54,557 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 [2022-07-20 22:35:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:54,576 INFO L225 Difference]: With dead ends: 6408 [2022-07-20 22:35:54,576 INFO L226 Difference]: Without dead ends: 6367 [2022-07-20 22:35:54,580 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 [2022-07-20 22:35:54,580 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, 5.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:54,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 8910 Invalid, 8207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 7763 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-20 22:35:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-07-20 22:35:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6268. [2022-07-20 22:35:54,828 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) [2022-07-20 22:35:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 9316 transitions. [2022-07-20 22:35:54,897 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 9316 transitions. Word has length 56 [2022-07-20 22:35:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:54,897 INFO L495 AbstractCegarLoop]: Abstraction has 6268 states and 9316 transitions. [2022-07-20 22:35:54,897 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) [2022-07-20 22:35:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 9316 transitions. [2022-07-20 22:35:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-20 22:35:54,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:54,900 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] [2022-07-20 22:35:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 22:35:54,900 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1153832404, now seen corresponding path program 1 times [2022-07-20 22:35:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:54,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654945734] [2022-07-20 22:35:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-20 22:35:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:35:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-20 22:35:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:55,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:55,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654945734] [2022-07-20 22:35:55,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654945734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:55,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:55,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 22:35:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061380457] [2022-07-20 22:35:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 22:35:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 22:35:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:35:55,096 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) [2022-07-20 22:35:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:59,124 INFO L93 Difference]: Finished difference Result 6296 states and 9350 transitions. [2022-07-20 22:35:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:35:59,125 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 [2022-07-20 22:35:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:59,144 INFO L225 Difference]: With dead ends: 6296 [2022-07-20 22:35:59,145 INFO L226 Difference]: Without dead ends: 6266 [2022-07-20 22:35:59,149 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 [2022-07-20 22:35:59,150 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, 3.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:59,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 6498 Invalid, 5261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-20 22:35:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2022-07-20 22:35:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6261. [2022-07-20 22:35:59,443 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) [2022-07-20 22:35:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9307 transitions. [2022-07-20 22:35:59,460 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9307 transitions. Word has length 56 [2022-07-20 22:35:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:59,460 INFO L495 AbstractCegarLoop]: Abstraction has 6261 states and 9307 transitions. [2022-07-20 22:35:59,460 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) [2022-07-20 22:35:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9307 transitions. [2022-07-20 22:35:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-20 22:35:59,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:59,462 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] [2022-07-20 22:35:59,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 22:35:59,462 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1964601087, now seen corresponding path program 1 times [2022-07-20 22:35:59,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:59,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665064496] [2022-07-20 22:35:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:59,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-20 22:35:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:35:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:59,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665064496] [2022-07-20 22:35:59,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665064496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:59,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:59,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 22:35:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156470543] [2022-07-20 22:35:59,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 22:35:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 22:35:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:35:59,702 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) [2022-07-20 22:36:02,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:04,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:09,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:14,263 INFO L93 Difference]: Finished difference Result 7021 states and 10475 transitions. [2022-07-20 22:36:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 22:36:14,264 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 [2022-07-20 22:36:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:14,282 INFO L225 Difference]: With dead ends: 7021 [2022-07-20 22:36:14,282 INFO L226 Difference]: Without dead ends: 6934 [2022-07-20 22:36:14,286 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 [2022-07-20 22:36:14,287 INFO L413 NwaCegarLoop]: 2231 mSDtfsCounter, 3663 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 8474 mSolverCounterSat, 2271 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 10747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2271 IncrementalHoareTripleChecker+Valid, 8474 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:14,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3819 Valid, 6467 Invalid, 10747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2271 Valid, 8474 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-07-20 22:36:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2022-07-20 22:36:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6307. [2022-07-20 22:36:14,605 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) [2022-07-20 22:36:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 9362 transitions. [2022-07-20 22:36:14,622 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 9362 transitions. Word has length 55 [2022-07-20 22:36:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:14,623 INFO L495 AbstractCegarLoop]: Abstraction has 6307 states and 9362 transitions. [2022-07-20 22:36:14,623 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) [2022-07-20 22:36:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 9362 transitions. [2022-07-20 22:36:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-20 22:36:14,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:14,625 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] [2022-07-20 22:36:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 22:36:14,625 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash 565116710, now seen corresponding path program 1 times [2022-07-20 22:36:14,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:14,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280200308] [2022-07-20 22:36:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-20 22:36:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:36:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 22:36:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:36:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-20 22:36:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:36:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280200308] [2022-07-20 22:36:14,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280200308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:14,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:14,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 22:36:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385542637] [2022-07-20 22:36:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 22:36:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 22:36:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-20 22:36:14,875 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) [2022-07-20 22:36:17,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:19,088 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 [] [2022-07-20 22:36:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:24,825 INFO L93 Difference]: Finished difference Result 7174 states and 10698 transitions. [2022-07-20 22:36:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 22:36:24,826 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 [2022-07-20 22:36:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:24,842 INFO L225 Difference]: With dead ends: 7174 [2022-07-20 22:36:24,843 INFO L226 Difference]: Without dead ends: 6181 [2022-07-20 22:36:24,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-20 22:36:24,848 INFO L413 NwaCegarLoop]: 2201 mSDtfsCounter, 1652 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 7403 mSolverCounterSat, 1274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 7332 SdHoareTripleChecker+Invalid, 8678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1274 IncrementalHoareTripleChecker+Valid, 7403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:24,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 7332 Invalid, 8678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1274 Valid, 7403 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-07-20 22:36:24,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-07-20 22:36:25,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 5431. [2022-07-20 22:36:25,135 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) [2022-07-20 22:36:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 8040 transitions. [2022-07-20 22:36:25,147 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 8040 transitions. Word has length 69 [2022-07-20 22:36:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:25,148 INFO L495 AbstractCegarLoop]: Abstraction has 5431 states and 8040 transitions. [2022-07-20 22:36:25,148 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) [2022-07-20 22:36:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 8040 transitions. [2022-07-20 22:36:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-20 22:36:25,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:25,150 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] [2022-07-20 22:36:25,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 22:36:25,150 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash -823060444, now seen corresponding path program 1 times [2022-07-20 22:36:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:25,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900736182] [2022-07-20 22:36:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-20 22:36:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:36:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:25,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900736182] [2022-07-20 22:36:25,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900736182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:25,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:25,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487676959] [2022-07-20 22:36:25,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:25,309 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) [2022-07-20 22:36:27,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:29,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:33,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:36,960 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 [] [2022-07-20 22:36:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:42,059 INFO L93 Difference]: Finished difference Result 7296 states and 10890 transitions. [2022-07-20 22:36:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:36:42,059 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 [2022-07-20 22:36:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:42,080 INFO L225 Difference]: With dead ends: 7296 [2022-07-20 22:36:42,080 INFO L226 Difference]: Without dead ends: 7283 [2022-07-20 22:36:42,083 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 [2022-07-20 22:36:42,083 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 1993 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 1126 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 5838 SdHoareTripleChecker+Invalid, 4575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:42,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 5838 Invalid, 4575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 3446 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2022-07-20 22:36:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7283 states. [2022-07-20 22:36:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7283 to 5516. [2022-07-20 22:36:42,399 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) [2022-07-20 22:36:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 8143 transitions. [2022-07-20 22:36:42,412 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 8143 transitions. Word has length 57 [2022-07-20 22:36:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:42,412 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 8143 transitions. [2022-07-20 22:36:42,412 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) [2022-07-20 22:36:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 8143 transitions. [2022-07-20 22:36:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-20 22:36:42,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:42,414 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] [2022-07-20 22:36:42,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 22:36:42,415 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -966339802, now seen corresponding path program 1 times [2022-07-20 22:36:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:42,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603486436] [2022-07-20 22:36:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:42,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-20 22:36:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:36:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:42,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603486436] [2022-07-20 22:36:42,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603486436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:42,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:42,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 22:36:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070317200] [2022-07-20 22:36:42,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:42,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 22:36:42,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:42,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 22:36:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:36:42,617 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) [2022-07-20 22:36:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:48,000 INFO L93 Difference]: Finished difference Result 6087 states and 9038 transitions. [2022-07-20 22:36:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 22:36:48,000 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 [2022-07-20 22:36:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:48,012 INFO L225 Difference]: With dead ends: 6087 [2022-07-20 22:36:48,012 INFO L226 Difference]: Without dead ends: 5932 [2022-07-20 22:36:48,013 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 [2022-07-20 22:36:48,014 INFO L413 NwaCegarLoop]: 2154 mSDtfsCounter, 3483 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 4505 mSolverCounterSat, 2194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 6699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 4505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:48,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 4792 Invalid, 6699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 4505 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-20 22:36:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2022-07-20 22:36:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5419. [2022-07-20 22:36:48,280 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) [2022-07-20 22:36:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 8016 transitions. [2022-07-20 22:36:48,293 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 8016 transitions. Word has length 57 [2022-07-20 22:36:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:48,294 INFO L495 AbstractCegarLoop]: Abstraction has 5419 states and 8016 transitions. [2022-07-20 22:36:48,294 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) [2022-07-20 22:36:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 8016 transitions. [2022-07-20 22:36:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 22:36:48,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:48,296 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] [2022-07-20 22:36:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 22:36:48,296 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1271877099, now seen corresponding path program 1 times [2022-07-20 22:36:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:48,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388993737] [2022-07-20 22:36:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-20 22:36:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:36:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 22:36:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 22:36:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-20 22:36:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 22:36:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:36:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:48,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388993737] [2022-07-20 22:36:48,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388993737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:48,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:48,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:36:48,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121787797] [2022-07-20 22:36:48,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:48,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:36:48,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:48,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:36:48,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:36:48,626 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) [2022-07-20 22:36:51,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:52,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:54,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:37:01,098 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 [] [2022-07-20 22:37:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:37:06,141 INFO L93 Difference]: Finished difference Result 6203 states and 9254 transitions. [2022-07-20 22:37:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 22:37:06,141 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 [2022-07-20 22:37:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:37:06,162 INFO L225 Difference]: With dead ends: 6203 [2022-07-20 22:37:06,162 INFO L226 Difference]: Without dead ends: 6150 [2022-07-20 22:37:06,165 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 [2022-07-20 22:37:06,166 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 1046 mSDsluCounter, 6365 mSDsCounter, 0 mSdLazyCounter, 8797 mSolverCounterSat, 547 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 8580 SdHoareTripleChecker+Invalid, 9346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 8797 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:37:06,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 8580 Invalid, 9346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 8797 Invalid, 2 Unknown, 0 Unchecked, 17.0s Time] [2022-07-20 22:37:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2022-07-20 22:37:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 5406. [2022-07-20 22:37:06,431 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) [2022-07-20 22:37:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 8000 transitions. [2022-07-20 22:37:06,445 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 8000 transitions. Word has length 63 [2022-07-20 22:37:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:37:06,445 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 8000 transitions. [2022-07-20 22:37:06,446 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) [2022-07-20 22:37:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 8000 transitions. [2022-07-20 22:37:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:37:06,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:37:06,448 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] [2022-07-20 22:37:06,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-20 22:37:06,448 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:37:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:37:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash 707742519, now seen corresponding path program 1 times [2022-07-20 22:37:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:37:06,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546140813] [2022-07-20 22:37:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:37:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:37:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-20 22:37:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:37:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:37:06,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:37:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546140813] [2022-07-20 22:37:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546140813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:37:06,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:37:06,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 22:37:06,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083425254] [2022-07-20 22:37:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:37:06,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 22:37:06,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:37:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 22:37:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 22:37:06,631 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)