./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 14:29:53,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:29:53,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:29:53,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:29:53,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:29:53,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:29:53,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:29:53,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:29:53,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:29:53,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:29:53,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:29:53,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:29:53,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:29:53,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:29:53,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:29:53,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:29:53,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:29:53,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:29:53,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:29:53,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:29:53,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:29:53,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:29:53,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:29:53,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:29:53,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:29:53,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:29:53,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:29:53,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:29:53,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:29:53,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:29:53,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:29:53,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:29:53,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:29:53,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:29:53,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:29:53,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:29:53,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:29:53,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:29:53,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:29:53,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:29:53,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:29:53,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 14:29:53,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:29:53,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:29:53,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:29:53,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:29:53,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:29:53,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:29:53,563 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:29:53,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:29:53,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 14:29:53,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:29:53,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:29:53,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:29:53,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:29:53,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:29:53,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:29:53,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:29:53,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:29:53,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:29:53,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:29:53,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:29:53,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:29:53,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:29:53,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:29:53,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 14:29:53,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 14:29:53,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:29:53,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:29:53,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:29:53,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:29:53,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-11-02 14:29:53,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:29:53,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:29:53,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:29:53,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:29:53,781 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:29:53,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-02 14:29:53,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053ea6735/64ff70b7834f4e03b357808869f8ba35/FLAG60f89c5ac [2021-11-02 14:29:54,369 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:29:54,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-02 14:29:54,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053ea6735/64ff70b7834f4e03b357808869f8ba35/FLAG60f89c5ac [2021-11-02 14:29:54,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053ea6735/64ff70b7834f4e03b357808869f8ba35 [2021-11-02 14:29:54,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:29:54,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:29:54,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:29:54,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:29:54,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:29:54,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:29:54" (1/1) ... [2021-11-02 14:29:54,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1633263a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:54, skipping insertion in model container [2021-11-02 14:29:54,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:29:54" (1/1) ... [2021-11-02 14:29:54,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:29:54,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:29:55,576 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-02 14:29:55,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:29:55,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:29:55,765 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-11-02 14:29:55,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:29:55,823 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:29:55,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55 WrapperNode [2021-11-02 14:29:55,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:29:55,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:29:55,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:29:55,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:29:55,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:55,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:55,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:29:55,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:29:55,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:29:55,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:29:55,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:55,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:55,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:55,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:56,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:56,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:56,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:56,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:29:56,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:29:56,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:29:56,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:29:56,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (1/1) ... [2021-11-02 14:29:56,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:29:56,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:29:56,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 14:29:56,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 14:29:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 14:29:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 14:29:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 14:29:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 14:29:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:29:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 14:29:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 14:29:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 14:29:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:29:56,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:29:56,545 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:56,555 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:56,556 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:56,562 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:56,566 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:56,566 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:56,573 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:29:57,530 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##254: assume false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##255: assume !false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume !false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##447: assume !false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##446: assume false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-11-02 14:29:57,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-11-02 14:29:57,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2021-11-02 14:29:57,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2021-11-02 14:29:57,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume !false; [2021-11-02 14:29:57,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume false; [2021-11-02 14:29:57,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##115: assume false; [2021-11-02 14:29:57,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##116: assume !false; [2021-11-02 14:29:57,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:29:57,542 INFO L299 CfgBuilder]: Removed 509 assume(true) statements. [2021-11-02 14:29:57,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:29:57 BoogieIcfgContainer [2021-11-02 14:29:57,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:29:57,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:29:57,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:29:57,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:29:57,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:29:54" (1/3) ... [2021-11-02 14:29:57,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d9fc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:29:57, skipping insertion in model container [2021-11-02 14:29:57,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:29:55" (2/3) ... [2021-11-02 14:29:57,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d9fc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:29:57, skipping insertion in model container [2021-11-02 14:29:57,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:29:57" (3/3) ... [2021-11-02 14:29:57,551 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-02 14:29:57,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:29:57,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-02 14:29:57,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:29:57,600 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 14:29:57,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-02 14:29:57,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 562 states, 553 states have (on average 1.4990958408679929) internal successors, (829), 561 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:29:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 14:29:57,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:29:57,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:29:57,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:29:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:29:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1571270776, now seen corresponding path program 1 times [2021-11-02 14:29:57,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:29:57,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469419944] [2021-11-02 14:29:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:29:57,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:29:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:29:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:29:58,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:29:58,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469419944] [2021-11-02 14:29:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469419944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:29:58,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:29:58,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:29:58,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830136907] [2021-11-02 14:29:58,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:29:58,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:29:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:29:58,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:29:58,025 INFO L87 Difference]: Start difference. First operand has 562 states, 553 states have (on average 1.4990958408679929) internal successors, (829), 561 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:00,033 INFO L93 Difference]: Finished difference Result 1644 states and 2443 transitions. [2021-11-02 14:30:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:30:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-02 14:30:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:00,049 INFO L225 Difference]: With dead ends: 1644 [2021-11-02 14:30:00,050 INFO L226 Difference]: Without dead ends: 1073 [2021-11-02 14:30:00,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:00,056 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 713 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1544.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.22ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1893.32ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:00,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 12 Invalid, 1447 Unknown, 0 Unchecked, 8.22ms Time], IncrementalHoareTripleChecker [6 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1893.32ms Time] [2021-11-02 14:30:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-02 14:30:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1061. [2021-11-02 14:30:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1053 states have (on average 1.3371320037986705) internal successors, (1408), 1060 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1408 transitions. [2021-11-02 14:30:00,118 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1408 transitions. Word has length 9 [2021-11-02 14:30:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:00,119 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1408 transitions. [2021-11-02 14:30:00,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1408 transitions. [2021-11-02 14:30:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 14:30:00,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:00,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:00,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 14:30:00,121 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:00,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:00,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1464753323, now seen corresponding path program 1 times [2021-11-02 14:30:00,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:00,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082041423] [2021-11-02 14:30:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:00,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:00,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:00,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082041423] [2021-11-02 14:30:00,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082041423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:00,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:00,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:30:00,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334027337] [2021-11-02 14:30:00,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:30:00,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:30:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:00,202 INFO L87 Difference]: Start difference. First operand 1061 states and 1408 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:01,884 INFO L93 Difference]: Finished difference Result 3165 states and 4205 transitions. [2021-11-02 14:30:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:30:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-02 14:30:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:01,890 INFO L225 Difference]: With dead ends: 3165 [2021-11-02 14:30:01,890 INFO L226 Difference]: Without dead ends: 2108 [2021-11-02 14:30:01,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:01,893 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 705 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1313.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1597.36ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:01,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 0 Invalid, 1429 Unknown, 0 Unchecked, 4.13ms Time], IncrementalHoareTripleChecker [1 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1597.36ms Time] [2021-11-02 14:30:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-11-02 14:30:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2088. [2021-11-02 14:30:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2080 states have (on average 1.3365384615384615) internal successors, (2780), 2087 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2780 transitions. [2021-11-02 14:30:01,950 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2780 transitions. Word has length 10 [2021-11-02 14:30:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:01,951 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2780 transitions. [2021-11-02 14:30:01,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2780 transitions. [2021-11-02 14:30:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 14:30:01,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:01,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:01,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 14:30:01,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash 843509326, now seen corresponding path program 1 times [2021-11-02 14:30:01,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:01,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525681083] [2021-11-02 14:30:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:01,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:02,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:02,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525681083] [2021-11-02 14:30:02,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525681083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:02,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:02,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:30:02,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085715392] [2021-11-02 14:30:02,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:30:02,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:30:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:02,034 INFO L87 Difference]: Start difference. First operand 2088 states and 2780 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:03,634 INFO L93 Difference]: Finished difference Result 5166 states and 6898 transitions. [2021-11-02 14:30:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:30:03,634 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-02 14:30:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:03,643 INFO L225 Difference]: With dead ends: 5166 [2021-11-02 14:30:03,643 INFO L226 Difference]: Without dead ends: 3085 [2021-11-02 14:30:03,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:03,651 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 369 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1231.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1496.06ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:03,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 0 Invalid, 1407 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [7 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1496.06ms Time] [2021-11-02 14:30:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2021-11-02 14:30:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3068. [2021-11-02 14:30:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3060 states have (on average 1.3369281045751633) internal successors, (4091), 3067 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4091 transitions. [2021-11-02 14:30:03,712 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4091 transitions. Word has length 35 [2021-11-02 14:30:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:03,712 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4091 transitions. [2021-11-02 14:30:03,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4091 transitions. [2021-11-02 14:30:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 14:30:03,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:03,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:03,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 14:30:03,718 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1573275523, now seen corresponding path program 1 times [2021-11-02 14:30:03,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:03,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632986552] [2021-11-02 14:30:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:03,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:03,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:03,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632986552] [2021-11-02 14:30:03,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632986552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:03,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:03,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:30:03,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620642534] [2021-11-02 14:30:03,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:30:03,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:03,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:30:03,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:03,826 INFO L87 Difference]: Start difference. First operand 3068 states and 4091 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:06,052 INFO L93 Difference]: Finished difference Result 8160 states and 10969 transitions. [2021-11-02 14:30:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:30:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-02 14:30:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:06,071 INFO L225 Difference]: With dead ends: 8160 [2021-11-02 14:30:06,072 INFO L226 Difference]: Without dead ends: 5097 [2021-11-02 14:30:06,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:30:06,078 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 659 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1866.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2124.41ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:06,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 0 Invalid, 1304 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [5 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 2124.41ms Time] [2021-11-02 14:30:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-11-02 14:30:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 5074. [2021-11-02 14:30:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5066 states have (on average 1.3509672325305961) internal successors, (6844), 5073 states have internal predecessors, (6844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6844 transitions. [2021-11-02 14:30:06,185 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6844 transitions. Word has length 43 [2021-11-02 14:30:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:06,186 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 6844 transitions. [2021-11-02 14:30:06,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6844 transitions. [2021-11-02 14:30:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 14:30:06,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:06,189 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:06,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 14:30:06,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 250462999, now seen corresponding path program 1 times [2021-11-02 14:30:06,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:06,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316561367] [2021-11-02 14:30:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:06,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:06,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:06,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316561367] [2021-11-02 14:30:06,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316561367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:06,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:06,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:30:06,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167676517] [2021-11-02 14:30:06,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:30:06,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:06,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:30:06,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:30:06,331 INFO L87 Difference]: Start difference. First operand 5074 states and 6844 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:08,563 INFO L93 Difference]: Finished difference Result 13775 states and 18604 transitions. [2021-11-02 14:30:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:30:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 14:30:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:08,588 INFO L225 Difference]: With dead ends: 13775 [2021-11-02 14:30:08,588 INFO L226 Difference]: Without dead ends: 8708 [2021-11-02 14:30:08,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:30:08,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 460 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1706.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2055.74ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:08,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 0 Invalid, 2158 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [8 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 2055.74ms Time] [2021-11-02 14:30:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8708 states. [2021-11-02 14:30:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8708 to 8346. [2021-11-02 14:30:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8346 states, 8338 states have (on average 1.3644758934996402) internal successors, (11377), 8345 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8346 states to 8346 states and 11377 transitions. [2021-11-02 14:30:08,788 INFO L78 Accepts]: Start accepts. Automaton has 8346 states and 11377 transitions. Word has length 54 [2021-11-02 14:30:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:08,789 INFO L470 AbstractCegarLoop]: Abstraction has 8346 states and 11377 transitions. [2021-11-02 14:30:08,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8346 states and 11377 transitions. [2021-11-02 14:30:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 14:30:08,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:08,790 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:08,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 14:30:08,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:08,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1594904167, now seen corresponding path program 1 times [2021-11-02 14:30:08,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:08,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954890267] [2021-11-02 14:30:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:08,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:08,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:08,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954890267] [2021-11-02 14:30:08,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954890267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:08,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:08,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:30:08,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096813554] [2021-11-02 14:30:08,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:30:08,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:30:08,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:30:08,876 INFO L87 Difference]: Start difference. First operand 8346 states and 11377 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:10,948 INFO L93 Difference]: Finished difference Result 16728 states and 22801 transitions. [2021-11-02 14:30:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:30:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 14:30:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:10,982 INFO L225 Difference]: With dead ends: 16728 [2021-11-02 14:30:10,982 INFO L226 Difference]: Without dead ends: 8369 [2021-11-02 14:30:10,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:30:10,994 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1576.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1912.59ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:10,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 2156 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [1 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1912.59ms Time] [2021-11-02 14:30:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2021-11-02 14:30:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 8313. [2021-11-02 14:30:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8313 states, 8305 states have (on average 1.3649608669476219) internal successors, (11336), 8312 states have internal predecessors, (11336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 11336 transitions. [2021-11-02 14:30:11,187 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 11336 transitions. Word has length 54 [2021-11-02 14:30:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:11,188 INFO L470 AbstractCegarLoop]: Abstraction has 8313 states and 11336 transitions. [2021-11-02 14:30:11,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 11336 transitions. [2021-11-02 14:30:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:30:11,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:11,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:11,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 14:30:11,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash -133909066, now seen corresponding path program 1 times [2021-11-02 14:30:11,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:11,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816230330] [2021-11-02 14:30:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:11,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 14:30:11,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816230330] [2021-11-02 14:30:11,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816230330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:11,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:11,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 14:30:11,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783523231] [2021-11-02 14:30:11,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 14:30:11,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 14:30:11,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:30:11,385 INFO L87 Difference]: Start difference. First operand 8313 states and 11336 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:20,604 INFO L93 Difference]: Finished difference Result 40305 states and 54708 transitions. [2021-11-02 14:30:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 14:30:20,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 14:30:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:20,662 INFO L225 Difference]: With dead ends: 40305 [2021-11-02 14:30:20,663 INFO L226 Difference]: Without dead ends: 31999 [2021-11-02 14:30:20,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 178.49ms TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-02 14:30:20,679 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5266 mSDsluCounter, 6465 mSDsCounter, 0 mSdLazyCounter, 9309 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7067.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.78ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 9309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8382.36ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:20,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5266 Valid, 0 Invalid, 9428 Unknown, 0 Unchecked, 30.78ms Time], IncrementalHoareTripleChecker [119 Valid, 9309 Invalid, 0 Unknown, 0 Unchecked, 8382.36ms Time] [2021-11-02 14:30:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31999 states. [2021-11-02 14:30:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31999 to 8313. [2021-11-02 14:30:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8313 states, 8305 states have (on average 1.3630343166767007) internal successors, (11320), 8312 states have internal predecessors, (11320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 11320 transitions. [2021-11-02 14:30:21,017 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 11320 transitions. Word has length 65 [2021-11-02 14:30:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:21,017 INFO L470 AbstractCegarLoop]: Abstraction has 8313 states and 11320 transitions. [2021-11-02 14:30:21,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 11320 transitions. [2021-11-02 14:30:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:30:21,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:21,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:21,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 14:30:21,020 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -943255692, now seen corresponding path program 1 times [2021-11-02 14:30:21,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:21,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986795119] [2021-11-02 14:30:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:21,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:21,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:21,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986795119] [2021-11-02 14:30:21,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986795119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:21,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:21,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:30:21,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088156730] [2021-11-02 14:30:21,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:30:21,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:30:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:30:21,142 INFO L87 Difference]: Start difference. First operand 8313 states and 11320 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:23,927 INFO L93 Difference]: Finished difference Result 15053 states and 20457 transitions. [2021-11-02 14:30:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:30:23,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 14:30:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:23,938 INFO L225 Difference]: With dead ends: 15053 [2021-11-02 14:30:23,939 INFO L226 Difference]: Without dead ends: 6733 [2021-11-02 14:30:23,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.90ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:30:23,948 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2172.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2618.91ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:23,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 0 Invalid, 2764 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [1 Valid, 2763 Invalid, 0 Unknown, 0 Unchecked, 2618.91ms Time] [2021-11-02 14:30:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2021-11-02 14:30:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6588. [2021-11-02 14:30:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6588 states, 6580 states have (on average 1.3595744680851063) internal successors, (8946), 6587 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 8946 transitions. [2021-11-02 14:30:24,110 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 8946 transitions. Word has length 65 [2021-11-02 14:30:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:24,110 INFO L470 AbstractCegarLoop]: Abstraction has 6588 states and 8946 transitions. [2021-11-02 14:30:24,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 8946 transitions. [2021-11-02 14:30:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:30:24,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:24,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:24,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 14:30:24,112 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 164963298, now seen corresponding path program 1 times [2021-11-02 14:30:24,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:24,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743310202] [2021-11-02 14:30:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:24,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:24,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:24,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743310202] [2021-11-02 14:30:24,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743310202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:24,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:24,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:30:24,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758608364] [2021-11-02 14:30:24,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:30:24,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:24,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:30:24,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:30:24,203 INFO L87 Difference]: Start difference. First operand 6588 states and 8946 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:28,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:28,573 INFO L93 Difference]: Finished difference Result 19648 states and 26596 transitions. [2021-11-02 14:30:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:30:28,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 14:30:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:28,593 INFO L225 Difference]: With dead ends: 19648 [2021-11-02 14:30:28,594 INFO L226 Difference]: Without dead ends: 13058 [2021-11-02 14:30:28,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.63ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:30:28,604 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 707 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3470.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4034.14ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:28,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 0 Invalid, 3119 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [11 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 4034.14ms Time] [2021-11-02 14:30:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13058 states. [2021-11-02 14:30:28,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13058 to 6597. [2021-11-02 14:30:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6597 states, 6589 states have (on average 1.3586280163909545) internal successors, (8952), 6596 states have internal predecessors, (8952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6597 states to 6597 states and 8952 transitions. [2021-11-02 14:30:28,814 INFO L78 Accepts]: Start accepts. Automaton has 6597 states and 8952 transitions. Word has length 65 [2021-11-02 14:30:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:28,814 INFO L470 AbstractCegarLoop]: Abstraction has 6597 states and 8952 transitions. [2021-11-02 14:30:28,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6597 states and 8952 transitions. [2021-11-02 14:30:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:30:28,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:28,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:28,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 14:30:28,816 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2093236000, now seen corresponding path program 1 times [2021-11-02 14:30:28,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:28,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147094444] [2021-11-02 14:30:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:28,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:28,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:28,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147094444] [2021-11-02 14:30:28,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147094444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:28,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:28,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:30:28,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447959898] [2021-11-02 14:30:28,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:30:28,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:28,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:30:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:30:28,909 INFO L87 Difference]: Start difference. First operand 6597 states and 8952 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:36,158 INFO L93 Difference]: Finished difference Result 28953 states and 39167 transitions. [2021-11-02 14:30:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 14:30:36,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 14:30:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:36,183 INFO L225 Difference]: With dead ends: 28953 [2021-11-02 14:30:36,183 INFO L226 Difference]: Without dead ends: 22351 [2021-11-02 14:30:36,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 73.47ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:30:36,193 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3367 mSDsluCounter, 4902 mSDsCounter, 0 mSdLazyCounter, 6708 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5646.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.43ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6628.26ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:36,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3367 Valid, 0 Invalid, 6725 Unknown, 0 Unchecked, 13.43ms Time], IncrementalHoareTripleChecker [17 Valid, 6708 Invalid, 0 Unknown, 0 Unchecked, 6628.26ms Time] [2021-11-02 14:30:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22351 states. [2021-11-02 14:30:36,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22351 to 6609. [2021-11-02 14:30:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6609 states, 6601 states have (on average 1.3575215876382367) internal successors, (8961), 6608 states have internal predecessors, (8961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 8961 transitions. [2021-11-02 14:30:36,500 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 8961 transitions. Word has length 65 [2021-11-02 14:30:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:36,500 INFO L470 AbstractCegarLoop]: Abstraction has 6609 states and 8961 transitions. [2021-11-02 14:30:36,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 8961 transitions. [2021-11-02 14:30:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:30:36,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:36,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:36,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 14:30:36,502 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1778084574, now seen corresponding path program 1 times [2021-11-02 14:30:36,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:36,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570513462] [2021-11-02 14:30:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:36,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:36,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:36,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570513462] [2021-11-02 14:30:36,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570513462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:30:36,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774999428] [2021-11-02 14:30:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:36,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:30:36,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:30:36,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:30:36,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 14:30:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:36,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 14:30:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:30:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:37,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:30:37,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774999428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:37,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 14:30:37,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-02 14:30:37,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72034864] [2021-11-02 14:30:37,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:30:37,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:30:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:30:37,160 INFO L87 Difference]: Start difference. First operand 6609 states and 8961 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:39,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:30:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:42,602 INFO L93 Difference]: Finished difference Result 13293 states and 18004 transitions. [2021-11-02 14:30:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:30:42,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 14:30:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:42,609 INFO L225 Difference]: With dead ends: 13293 [2021-11-02 14:30:42,609 INFO L226 Difference]: Without dead ends: 6676 [2021-11-02 14:30:42,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.38ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:30:42,616 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4486.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5155.58ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:42,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 2887 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [2 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 5155.58ms Time] [2021-11-02 14:30:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-11-02 14:30:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6618. [2021-11-02 14:30:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6618 states, 6610 states have (on average 1.3565809379727685) internal successors, (8967), 6617 states have internal predecessors, (8967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 8967 transitions. [2021-11-02 14:30:42,868 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 8967 transitions. Word has length 65 [2021-11-02 14:30:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 6618 states and 8967 transitions. [2021-11-02 14:30:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 8967 transitions. [2021-11-02 14:30:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 14:30:42,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:42,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:42,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 14:30:43,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 14:30:43,078 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1983187107, now seen corresponding path program 1 times [2021-11-02 14:30:43,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:43,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520958242] [2021-11-02 14:30:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:43,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:43,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:43,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520958242] [2021-11-02 14:30:43,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520958242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:30:43,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371708695] [2021-11-02 14:30:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:43,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:30:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:30:43,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:30:43,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 14:30:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:43,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 14:30:43,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:30:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:43,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:30:43,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371708695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:43,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 14:30:43,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-02 14:30:43,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686293773] [2021-11-02 14:30:43,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:30:43,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:30:43,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:30:43,641 INFO L87 Difference]: Start difference. First operand 6618 states and 8967 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:46,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:46,734 INFO L93 Difference]: Finished difference Result 11954 states and 16114 transitions. [2021-11-02 14:30:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:30:46,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 14:30:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:46,740 INFO L225 Difference]: With dead ends: 11954 [2021-11-02 14:30:46,740 INFO L226 Difference]: Without dead ends: 5328 [2021-11-02 14:30:46,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.68ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:30:46,747 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2305.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2858.05ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:46,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 2887 Unknown, 0 Unchecked, 3.54ms Time], IncrementalHoareTripleChecker [3 Valid, 2884 Invalid, 0 Unknown, 0 Unchecked, 2858.05ms Time] [2021-11-02 14:30:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-11-02 14:30:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5252. [2021-11-02 14:30:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5244 states have (on average 1.345537757437071) internal successors, (7056), 5251 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 7056 transitions. [2021-11-02 14:30:46,907 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 7056 transitions. Word has length 67 [2021-11-02 14:30:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:46,907 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 7056 transitions. [2021-11-02 14:30:46,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 7056 transitions. [2021-11-02 14:30:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 14:30:46,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:46,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:46,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 14:30:47,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 14:30:47,109 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:47,110 INFO L85 PathProgramCache]: Analyzing trace with hash 877143517, now seen corresponding path program 1 times [2021-11-02 14:30:47,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:47,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296161520] [2021-11-02 14:30:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:47,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:47,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:47,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296161520] [2021-11-02 14:30:47,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296161520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:30:47,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383915945] [2021-11-02 14:30:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:47,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:30:47,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:30:47,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:30:47,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 14:30:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:47,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:30:47,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:30:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:47,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:30:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:47,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383915945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:30:47,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 14:30:47,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-02 14:30:47,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034783453] [2021-11-02 14:30:47,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:30:47,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:30:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:30:47,792 INFO L87 Difference]: Start difference. First operand 5252 states and 7056 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:52,547 INFO L93 Difference]: Finished difference Result 15027 states and 20303 transitions. [2021-11-02 14:30:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:30:52,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 14:30:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:52,559 INFO L225 Difference]: With dead ends: 15027 [2021-11-02 14:30:52,559 INFO L226 Difference]: Without dead ends: 9884 [2021-11-02 14:30:52,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.90ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:30:52,564 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2082 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3730.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4426.23ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:52,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 0 Invalid, 3316 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [15 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 4426.23ms Time] [2021-11-02 14:30:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-11-02 14:30:52,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 9596. [2021-11-02 14:30:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9596 states, 9588 states have (on average 1.359511889862328) internal successors, (13035), 9595 states have internal predecessors, (13035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9596 states to 9596 states and 13035 transitions. [2021-11-02 14:30:52,849 INFO L78 Accepts]: Start accepts. Automaton has 9596 states and 13035 transitions. Word has length 67 [2021-11-02 14:30:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:52,849 INFO L470 AbstractCegarLoop]: Abstraction has 9596 states and 13035 transitions. [2021-11-02 14:30:52,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9596 states and 13035 transitions. [2021-11-02 14:30:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 14:30:52,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:52,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:52,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 14:30:53,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:30:53,063 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash -612371812, now seen corresponding path program 1 times [2021-11-02 14:30:53,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:53,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582606334] [2021-11-02 14:30:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:53,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:53,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:53,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582606334] [2021-11-02 14:30:53,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582606334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:53,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:53,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 14:30:53,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953800727] [2021-11-02 14:30:53,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 14:30:53,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 14:30:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:30:53,271 INFO L87 Difference]: Start difference. First operand 9596 states and 13035 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:30:57,660 INFO L93 Difference]: Finished difference Result 9969 states and 13477 transitions. [2021-11-02 14:30:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 14:30:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 14:30:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:30:57,674 INFO L225 Difference]: With dead ends: 9969 [2021-11-02 14:30:57,674 INFO L226 Difference]: Without dead ends: 9945 [2021-11-02 14:30:57,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 221.92ms TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-02 14:30:57,678 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1872 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3015.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.44ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3932.91ms IncrementalHoareTripleChecker+Time [2021-11-02 14:30:57,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 0 Invalid, 3611 Unknown, 0 Unchecked, 7.44ms Time], IncrementalHoareTripleChecker [128 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 3932.91ms Time] [2021-11-02 14:30:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2021-11-02 14:30:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 9672. [2021-11-02 14:30:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9672 states, 9664 states have (on average 1.3585471854304636) internal successors, (13129), 9671 states have internal predecessors, (13129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9672 states to 9672 states and 13129 transitions. [2021-11-02 14:30:58,037 INFO L78 Accepts]: Start accepts. Automaton has 9672 states and 13129 transitions. Word has length 68 [2021-11-02 14:30:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:30:58,038 INFO L470 AbstractCegarLoop]: Abstraction has 9672 states and 13129 transitions. [2021-11-02 14:30:58,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:30:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9672 states and 13129 transitions. [2021-11-02 14:30:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 14:30:58,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:30:58,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:30:58,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 14:30:58,040 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:30:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:30:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1421718438, now seen corresponding path program 1 times [2021-11-02 14:30:58,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:30:58,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402043057] [2021-11-02 14:30:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:30:58,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:30:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:30:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:30:58,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:30:58,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402043057] [2021-11-02 14:30:58,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402043057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:30:58,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:30:58,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:30:58,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491917734] [2021-11-02 14:30:58,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:30:58,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:30:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:30:58,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:30:58,188 INFO L87 Difference]: Start difference. First operand 9672 states and 13129 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:00,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:31:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:31:09,306 INFO L93 Difference]: Finished difference Result 54830 states and 74792 transitions. [2021-11-02 14:31:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 14:31:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 14:31:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:31:09,382 INFO L225 Difference]: With dead ends: 54830 [2021-11-02 14:31:09,382 INFO L226 Difference]: Without dead ends: 45245 [2021-11-02 14:31:09,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 117.93ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-02 14:31:09,404 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5864 mSDsluCounter, 7225 mSDsCounter, 0 mSdLazyCounter, 8935 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7967.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5864 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.93ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 8935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9561.59ms IncrementalHoareTripleChecker+Time [2021-11-02 14:31:09,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5864 Valid, 0 Invalid, 8962 Unknown, 0 Unchecked, 24.93ms Time], IncrementalHoareTripleChecker [27 Valid, 8935 Invalid, 0 Unknown, 0 Unchecked, 9561.59ms Time] [2021-11-02 14:31:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45245 states. [2021-11-02 14:31:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45245 to 9611. [2021-11-02 14:31:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9611 states, 9603 states have (on average 1.3584296573987296) internal successors, (13045), 9610 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9611 states to 9611 states and 13045 transitions. [2021-11-02 14:31:10,091 INFO L78 Accepts]: Start accepts. Automaton has 9611 states and 13045 transitions. Word has length 68 [2021-11-02 14:31:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:31:10,091 INFO L470 AbstractCegarLoop]: Abstraction has 9611 states and 13045 transitions. [2021-11-02 14:31:10,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9611 states and 13045 transitions. [2021-11-02 14:31:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 14:31:10,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:31:10,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:31:10,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 14:31:10,094 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:31:10,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:31:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash -965460194, now seen corresponding path program 1 times [2021-11-02 14:31:10,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:31:10,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633022399] [2021-11-02 14:31:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:31:10,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:31:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:31:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:31:10,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:31:10,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633022399] [2021-11-02 14:31:10,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633022399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:31:10,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:31:10,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 14:31:10,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094486663] [2021-11-02 14:31:10,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 14:31:10,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:31:10,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 14:31:10,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:31:10,367 INFO L87 Difference]: Start difference. First operand 9611 states and 13045 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:31:17,200 INFO L93 Difference]: Finished difference Result 9963 states and 13465 transitions. [2021-11-02 14:31:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 14:31:17,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 14:31:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:31:17,211 INFO L225 Difference]: With dead ends: 9963 [2021-11-02 14:31:17,212 INFO L226 Difference]: Without dead ends: 9939 [2021-11-02 14:31:17,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 237.20ms TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-02 14:31:17,214 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1430 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 5255 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4979.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 5255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6225.03ms IncrementalHoareTripleChecker+Time [2021-11-02 14:31:17,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 0 Invalid, 5338 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [83 Valid, 5255 Invalid, 0 Unknown, 0 Unchecked, 6225.03ms Time] [2021-11-02 14:31:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9939 states. [2021-11-02 14:31:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9939 to 9687. [2021-11-02 14:31:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9687 states, 9679 states have (on average 1.3573716293005476) internal successors, (13138), 9686 states have internal predecessors, (13138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9687 states to 9687 states and 13138 transitions. [2021-11-02 14:31:17,627 INFO L78 Accepts]: Start accepts. Automaton has 9687 states and 13138 transitions. Word has length 68 [2021-11-02 14:31:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:31:17,627 INFO L470 AbstractCegarLoop]: Abstraction has 9687 states and 13138 transitions. [2021-11-02 14:31:17,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9687 states and 13138 transitions. [2021-11-02 14:31:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 14:31:17,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:31:17,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:31:17,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 14:31:17,629 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:31:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:31:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1774806820, now seen corresponding path program 1 times [2021-11-02 14:31:17,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:31:17,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457147451] [2021-11-02 14:31:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:31:17,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:31:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:31:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:31:18,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:31:18,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457147451] [2021-11-02 14:31:18,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457147451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:31:18,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:31:18,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 14:31:18,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678798429] [2021-11-02 14:31:18,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 14:31:18,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:31:18,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 14:31:18,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:31:18,055 INFO L87 Difference]: Start difference. First operand 9687 states and 13138 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:31:40,815 INFO L93 Difference]: Finished difference Result 38480 states and 52687 transitions. [2021-11-02 14:31:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 14:31:40,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 14:31:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:31:40,865 INFO L225 Difference]: With dead ends: 38480 [2021-11-02 14:31:40,865 INFO L226 Difference]: Without dead ends: 38389 [2021-11-02 14:31:40,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 712.72ms TimeCoverageRelationStatistics Valid=993, Invalid=3563, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 14:31:40,877 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6738 mSDsluCounter, 15323 mSDsCounter, 0 mSdLazyCounter, 20146 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16700.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6738 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.78ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 20146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20005.53ms IncrementalHoareTripleChecker+Time [2021-11-02 14:31:40,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6738 Valid, 0 Invalid, 20223 Unknown, 0 Unchecked, 57.78ms Time], IncrementalHoareTripleChecker [77 Valid, 20146 Invalid, 0 Unknown, 0 Unchecked, 20005.53ms Time] [2021-11-02 14:31:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38389 states. [2021-11-02 14:31:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38389 to 9707. [2021-11-02 14:31:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9707 states, 9699 states have (on average 1.3555005670687699) internal successors, (13147), 9706 states have internal predecessors, (13147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9707 states to 9707 states and 13147 transitions. [2021-11-02 14:31:41,551 INFO L78 Accepts]: Start accepts. Automaton has 9707 states and 13147 transitions. Word has length 68 [2021-11-02 14:31:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:31:41,551 INFO L470 AbstractCegarLoop]: Abstraction has 9707 states and 13147 transitions. [2021-11-02 14:31:41,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 9707 states and 13147 transitions. [2021-11-02 14:31:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 14:31:41,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:31:41,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:31:41,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 14:31:41,552 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:31:41,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:31:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1509043226, now seen corresponding path program 1 times [2021-11-02 14:31:41,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:31:41,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101335618] [2021-11-02 14:31:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:31:41,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:31:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:31:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:31:41,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:31:41,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101335618] [2021-11-02 14:31:41,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101335618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:31:41,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:31:41,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:31:41,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598989938] [2021-11-02 14:31:41,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:31:41,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:31:41,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:31:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:31:41,637 INFO L87 Difference]: Start difference. First operand 9707 states and 13147 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:31:52,009 INFO L93 Difference]: Finished difference Result 57325 states and 78071 transitions. [2021-11-02 14:31:52,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:31:52,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 14:31:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:31:52,113 INFO L225 Difference]: With dead ends: 57325 [2021-11-02 14:31:52,113 INFO L226 Difference]: Without dead ends: 52488 [2021-11-02 14:31:52,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.52ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:31:52,134 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5127 mSDsluCounter, 4762 mSDsCounter, 0 mSdLazyCounter, 6451 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5896.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.83ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7236.01ms IncrementalHoareTripleChecker+Time [2021-11-02 14:31:52,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5127 Valid, 0 Invalid, 6475 Unknown, 0 Unchecked, 17.83ms Time], IncrementalHoareTripleChecker [24 Valid, 6451 Invalid, 0 Unknown, 0 Unchecked, 7236.01ms Time] [2021-11-02 14:31:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52488 states. [2021-11-02 14:31:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52488 to 9794. [2021-11-02 14:31:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9794 states, 9786 states have (on average 1.352340077661966) internal successors, (13234), 9793 states have internal predecessors, (13234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9794 states to 9794 states and 13234 transitions. [2021-11-02 14:31:53,052 INFO L78 Accepts]: Start accepts. Automaton has 9794 states and 13234 transitions. Word has length 68 [2021-11-02 14:31:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:31:53,052 INFO L470 AbstractCegarLoop]: Abstraction has 9794 states and 13234 transitions. [2021-11-02 14:31:53,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9794 states and 13234 transitions. [2021-11-02 14:31:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 14:31:53,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:31:53,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:31:53,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 14:31:53,054 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:31:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:31:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -79304676, now seen corresponding path program 1 times [2021-11-02 14:31:53,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:31:53,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859800750] [2021-11-02 14:31:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:31:53,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:31:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:31:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:31:53,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:31:53,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859800750] [2021-11-02 14:31:53,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859800750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:31:53,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:31:53,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:31:53,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815177543] [2021-11-02 14:31:53,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:31:53,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:31:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:31:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:31:53,141 INFO L87 Difference]: Start difference. First operand 9794 states and 13234 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:31:55,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:32:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:12,200 INFO L93 Difference]: Finished difference Result 58298 states and 79454 transitions. [2021-11-02 14:32:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 14:32:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 14:32:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:12,284 INFO L225 Difference]: With dead ends: 58298 [2021-11-02 14:32:12,284 INFO L226 Difference]: Without dead ends: 48677 [2021-11-02 14:32:12,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 54.58ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:32:12,307 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4980 mSDsluCounter, 9059 mSDsCounter, 0 mSdLazyCounter, 11347 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12863.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.10ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 11347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15328.02ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:12,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4980 Valid, 0 Invalid, 11366 Unknown, 0 Unchecked, 30.10ms Time], IncrementalHoareTripleChecker [19 Valid, 11347 Invalid, 0 Unknown, 0 Unchecked, 15328.02ms Time] [2021-11-02 14:32:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48677 states. [2021-11-02 14:32:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48677 to 9732. [2021-11-02 14:32:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9732 states, 9724 states have (on average 1.3504730563554093) internal successors, (13132), 9731 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9732 states to 9732 states and 13132 transitions. [2021-11-02 14:32:13,425 INFO L78 Accepts]: Start accepts. Automaton has 9732 states and 13132 transitions. Word has length 68 [2021-11-02 14:32:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:13,426 INFO L470 AbstractCegarLoop]: Abstraction has 9732 states and 13132 transitions. [2021-11-02 14:32:13,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9732 states and 13132 transitions. [2021-11-02 14:32:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 14:32:13,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:13,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:32:13,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 14:32:13,428 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:32:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash 870669115, now seen corresponding path program 1 times [2021-11-02 14:32:13,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:13,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696201868] [2021-11-02 14:32:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:13,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:13,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:13,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696201868] [2021-11-02 14:32:13,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696201868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:13,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:13,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:32:13,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265184822] [2021-11-02 14:32:13,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:32:13,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:32:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:32:13,499 INFO L87 Difference]: Start difference. First operand 9732 states and 13132 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:18,671 INFO L93 Difference]: Finished difference Result 22095 states and 29863 transitions. [2021-11-02 14:32:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:32:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 14:32:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:18,691 INFO L225 Difference]: With dead ends: 22095 [2021-11-02 14:32:18,691 INFO L226 Difference]: Without dead ends: 12437 [2021-11-02 14:32:18,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.54ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:32:18,703 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 629 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3155.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4014.52ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:18,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 0 Invalid, 3251 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [1 Valid, 3250 Invalid, 0 Unknown, 0 Unchecked, 4014.52ms Time] [2021-11-02 14:32:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12437 states. [2021-11-02 14:32:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12437 to 6781. [2021-11-02 14:32:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6773 states have (on average 1.3584822087701167) internal successors, (9201), 6780 states have internal predecessors, (9201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9201 transitions. [2021-11-02 14:32:19,285 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9201 transitions. Word has length 73 [2021-11-02 14:32:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:19,285 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 9201 transitions. [2021-11-02 14:32:19,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9201 transitions. [2021-11-02 14:32:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 14:32:19,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:19,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:32:19,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 14:32:19,287 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:32:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash -599419909, now seen corresponding path program 1 times [2021-11-02 14:32:19,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:19,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399702095] [2021-11-02 14:32:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:19,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:19,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:19,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399702095] [2021-11-02 14:32:19,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399702095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:19,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:19,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:32:19,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453348218] [2021-11-02 14:32:19,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:32:19,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:32:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:32:19,362 INFO L87 Difference]: Start difference. First operand 6781 states and 9201 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:21,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:32:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:26,123 INFO L93 Difference]: Finished difference Result 12040 states and 16243 transitions. [2021-11-02 14:32:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:32:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 14:32:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:26,142 INFO L225 Difference]: With dead ends: 12040 [2021-11-02 14:32:26,142 INFO L226 Difference]: Without dead ends: 12027 [2021-11-02 14:32:26,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.42ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:32:26,149 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1221 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4819.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5633.17ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:26,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 0 Invalid, 2750 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [14 Valid, 2735 Invalid, 1 Unknown, 0 Unchecked, 5633.17ms Time] [2021-11-02 14:32:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12027 states. [2021-11-02 14:32:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12027 to 11489. [2021-11-02 14:32:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11489 states, 11481 states have (on average 1.35693754899399) internal successors, (15579), 11488 states have internal predecessors, (15579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11489 states to 11489 states and 15579 transitions. [2021-11-02 14:32:27,145 INFO L78 Accepts]: Start accepts. Automaton has 11489 states and 15579 transitions. Word has length 73 [2021-11-02 14:32:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:27,145 INFO L470 AbstractCegarLoop]: Abstraction has 11489 states and 15579 transitions. [2021-11-02 14:32:27,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 11489 states and 15579 transitions. [2021-11-02 14:32:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 14:32:27,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:27,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:32:27,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 14:32:27,147 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:32:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash -949414679, now seen corresponding path program 1 times [2021-11-02 14:32:27,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:27,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755692020] [2021-11-02 14:32:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:27,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:27,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:27,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755692020] [2021-11-02 14:32:27,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755692020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:27,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:27,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:32:27,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546812936] [2021-11-02 14:32:27,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:32:27,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:32:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:32:27,231 INFO L87 Difference]: Start difference. First operand 11489 states and 15579 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:31,849 INFO L93 Difference]: Finished difference Result 19662 states and 26650 transitions. [2021-11-02 14:32:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:32:31,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 14:32:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:31,859 INFO L225 Difference]: With dead ends: 19662 [2021-11-02 14:32:31,860 INFO L226 Difference]: Without dead ends: 8347 [2021-11-02 14:32:31,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:32:31,871 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 687 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2886.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3668.25ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:31,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 0 Invalid, 2043 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [8 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 3668.25ms Time] [2021-11-02 14:32:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2021-11-02 14:32:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 8305. [2021-11-02 14:32:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8297 states have (on average 1.3491623478365675) internal successors, (11194), 8304 states have internal predecessors, (11194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 11194 transitions. [2021-11-02 14:32:32,641 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 11194 transitions. Word has length 79 [2021-11-02 14:32:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:32,641 INFO L470 AbstractCegarLoop]: Abstraction has 8305 states and 11194 transitions. [2021-11-02 14:32:32,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 11194 transitions. [2021-11-02 14:32:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 14:32:32,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:32,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:32:32,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 14:32:32,644 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:32:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash -786465020, now seen corresponding path program 1 times [2021-11-02 14:32:32,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:32,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521271503] [2021-11-02 14:32:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:32,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:32,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:32,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521271503] [2021-11-02 14:32:32,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521271503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:32,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:32,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:32:32,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127006250] [2021-11-02 14:32:32,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:32:32,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:32:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:32:32,845 INFO L87 Difference]: Start difference. First operand 8305 states and 11194 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:38,409 INFO L93 Difference]: Finished difference Result 24829 states and 33470 transitions. [2021-11-02 14:32:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:32:38,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 14:32:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:38,439 INFO L225 Difference]: With dead ends: 24829 [2021-11-02 14:32:38,440 INFO L226 Difference]: Without dead ends: 19957 [2021-11-02 14:32:38,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.97ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:32:38,455 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1237 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2796.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3505.05ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:38,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 0 Invalid, 2751 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [16 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 3505.05ms Time] [2021-11-02 14:32:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19957 states. [2021-11-02 14:32:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19957 to 18449. [2021-11-02 14:32:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18441 states have (on average 1.3564340328615585) internal successors, (25014), 18448 states have internal predecessors, (25014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 25014 transitions. [2021-11-02 14:32:40,328 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 25014 transitions. Word has length 81 [2021-11-02 14:32:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:40,329 INFO L470 AbstractCegarLoop]: Abstraction has 18449 states and 25014 transitions. [2021-11-02 14:32:40,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 25014 transitions. [2021-11-02 14:32:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 14:32:40,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:40,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:32:40,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 14:32:40,331 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:32:40,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2028113370, now seen corresponding path program 1 times [2021-11-02 14:32:40,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:40,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996851178] [2021-11-02 14:32:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:40,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:40,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:40,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996851178] [2021-11-02 14:32:40,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996851178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:40,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:40,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:32:40,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362636251] [2021-11-02 14:32:40,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:32:40,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:32:40,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:32:40,450 INFO L87 Difference]: Start difference. First operand 18449 states and 25014 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:42,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:32:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:54,604 INFO L93 Difference]: Finished difference Result 69562 states and 94775 transitions. [2021-11-02 14:32:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:32:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 14:32:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:54,706 INFO L225 Difference]: With dead ends: 69562 [2021-11-02 14:32:54,706 INFO L226 Difference]: Without dead ends: 52275 [2021-11-02 14:32:54,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.76ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:32:54,738 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2632 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 5773 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7053.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.03ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8668.47ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:54,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2632 Valid, 0 Invalid, 5796 Unknown, 0 Unchecked, 15.03ms Time], IncrementalHoareTripleChecker [23 Valid, 5773 Invalid, 0 Unknown, 0 Unchecked, 8668.47ms Time] [2021-11-02 14:32:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52275 states. [2021-11-02 14:32:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52275 to 18465. [2021-11-02 14:32:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18465 states, 18457 states have (on average 1.3555832475483556) internal successors, (25020), 18464 states have internal predecessors, (25020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18465 states to 18465 states and 25020 transitions. [2021-11-02 14:32:57,017 INFO L78 Accepts]: Start accepts. Automaton has 18465 states and 25020 transitions. Word has length 87 [2021-11-02 14:32:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:57,017 INFO L470 AbstractCegarLoop]: Abstraction has 18465 states and 25020 transitions. [2021-11-02 14:32:57,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:32:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18465 states and 25020 transitions. [2021-11-02 14:32:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 14:32:57,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:57,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:32:57,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 14:32:57,020 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:32:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2005481116, now seen corresponding path program 1 times [2021-11-02 14:32:57,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:57,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778985586] [2021-11-02 14:32:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:57,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:57,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:57,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778985586] [2021-11-02 14:32:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778985586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:57,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:57,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:32:57,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629499428] [2021-11-02 14:32:57,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:32:57,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:32:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:32:57,118 INFO L87 Difference]: Start difference. First operand 18465 states and 25020 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:02,008 INFO L93 Difference]: Finished difference Result 35733 states and 48493 transitions. [2021-11-02 14:33:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:33:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 14:33:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:02,038 INFO L225 Difference]: With dead ends: 35733 [2021-11-02 14:33:02,038 INFO L226 Difference]: Without dead ends: 18525 [2021-11-02 14:33:02,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:33:02,059 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2199.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2814.67ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:02,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1418 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [2 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 2814.67ms Time] [2021-11-02 14:33:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18525 states. [2021-11-02 14:33:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18525 to 18525. [2021-11-02 14:33:04,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18517 states have (on average 1.3544310633471945) internal successors, (25080), 18524 states have internal predecessors, (25080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 25080 transitions. [2021-11-02 14:33:04,296 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 25080 transitions. Word has length 87 [2021-11-02 14:33:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:04,296 INFO L470 AbstractCegarLoop]: Abstraction has 18525 states and 25080 transitions. [2021-11-02 14:33:04,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:04,296 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 25080 transitions. [2021-11-02 14:33:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 14:33:04,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:04,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:33:04,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 14:33:04,298 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:33:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1472640899, now seen corresponding path program 1 times [2021-11-02 14:33:04,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:04,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94686652] [2021-11-02 14:33:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:04,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:04,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:04,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94686652] [2021-11-02 14:33:04,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94686652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:33:04,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933518574] [2021-11-02 14:33:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:04,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:33:04,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:33:04,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:33:04,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 14:33:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:04,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 14:33:04,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:33:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:04,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:33:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:05,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933518574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:33:05,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 14:33:05,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 14:33:05,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929084958] [2021-11-02 14:33:05,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:33:05,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:33:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:33:05,086 INFO L87 Difference]: Start difference. First operand 18525 states and 25080 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:11,335 INFO L93 Difference]: Finished difference Result 37461 states and 51052 transitions. [2021-11-02 14:33:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:33:11,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 14:33:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:11,368 INFO L225 Difference]: With dead ends: 37461 [2021-11-02 14:33:11,368 INFO L226 Difference]: Without dead ends: 19045 [2021-11-02 14:33:11,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.27ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:33:11,390 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3006.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3962.31ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:11,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2155 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [24 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 3962.31ms Time] [2021-11-02 14:33:11,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19045 states. [2021-11-02 14:33:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19045 to 19045. [2021-11-02 14:33:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19045 states, 19037 states have (on average 1.3447496979566107) internal successors, (25600), 19044 states have internal predecessors, (25600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19045 states to 19045 states and 25600 transitions. [2021-11-02 14:33:13,548 INFO L78 Accepts]: Start accepts. Automaton has 19045 states and 25600 transitions. Word has length 88 [2021-11-02 14:33:13,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:13,548 INFO L470 AbstractCegarLoop]: Abstraction has 19045 states and 25600 transitions. [2021-11-02 14:33:13,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 19045 states and 25600 transitions. [2021-11-02 14:33:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 14:33:13,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:13,551 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:33:13,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 14:33:13,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 14:33:13,766 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:33:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1532344412, now seen corresponding path program 2 times [2021-11-02 14:33:13,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:13,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288017370] [2021-11-02 14:33:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:13,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:13,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:13,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288017370] [2021-11-02 14:33:13,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288017370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:33:13,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349184426] [2021-11-02 14:33:13,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 14:33:13,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:33:13,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:33:13,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:33:13,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 14:33:14,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 14:33:14,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 14:33:14,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 14:33:14,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:33:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 14:33:14,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:33:14,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349184426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:33:14,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 14:33:14,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-02 14:33:14,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297115015] [2021-11-02 14:33:14,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:33:14,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:33:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:33:14,423 INFO L87 Difference]: Start difference. First operand 19045 states and 25600 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:21,714 INFO L93 Difference]: Finished difference Result 31929 states and 43292 transitions. [2021-11-02 14:33:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:33:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 14:33:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:21,765 INFO L225 Difference]: With dead ends: 31929 [2021-11-02 14:33:21,765 INFO L226 Difference]: Without dead ends: 31920 [2021-11-02 14:33:21,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 41.52ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:33:21,779 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1326 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2675.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3405.16ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:21,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 0 Invalid, 1957 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [3 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 3405.16ms Time] [2021-11-02 14:33:21,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31920 states. [2021-11-02 14:33:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31920 to 19065. [2021-11-02 14:33:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19065 states, 19057 states have (on average 1.343338405835126) internal successors, (25600), 19064 states have internal predecessors, (25600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19065 states to 19065 states and 25600 transitions. [2021-11-02 14:33:23,929 INFO L78 Accepts]: Start accepts. Automaton has 19065 states and 25600 transitions. Word has length 91 [2021-11-02 14:33:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:23,929 INFO L470 AbstractCegarLoop]: Abstraction has 19065 states and 25600 transitions. [2021-11-02 14:33:23,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 19065 states and 25600 transitions. [2021-11-02 14:33:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 14:33:23,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:23,931 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:33:23,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 14:33:24,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 14:33:24,132 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:33:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1795713238, now seen corresponding path program 1 times [2021-11-02 14:33:24,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:24,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800230986] [2021-11-02 14:33:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:24,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 14:33:24,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:24,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800230986] [2021-11-02 14:33:24,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800230986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:33:24,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:33:24,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:33:24,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781209130] [2021-11-02 14:33:24,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:33:24,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:33:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:33:24,196 INFO L87 Difference]: Start difference. First operand 19065 states and 25600 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:29,891 INFO L93 Difference]: Finished difference Result 38066 states and 51110 transitions. [2021-11-02 14:33:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:33:29,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 14:33:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:29,922 INFO L225 Difference]: With dead ends: 38066 [2021-11-02 14:33:29,922 INFO L226 Difference]: Without dead ends: 19104 [2021-11-02 14:33:29,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:33:29,946 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2573.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3392.29ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:29,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 2132 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [4 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 3392.29ms Time] [2021-11-02 14:33:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19104 states. [2021-11-02 14:33:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19104 to 19071. [2021-11-02 14:33:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19071 states, 19063 states have (on average 1.3424434768924094) internal successors, (25591), 19070 states have internal predecessors, (25591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19071 states to 19071 states and 25591 transitions. [2021-11-02 14:33:32,065 INFO L78 Accepts]: Start accepts. Automaton has 19071 states and 25591 transitions. Word has length 91 [2021-11-02 14:33:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:32,065 INFO L470 AbstractCegarLoop]: Abstraction has 19071 states and 25591 transitions. [2021-11-02 14:33:32,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19071 states and 25591 transitions. [2021-11-02 14:33:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 14:33:32,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:32,067 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:33:32,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 14:33:32,067 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:33:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:32,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1963927494, now seen corresponding path program 1 times [2021-11-02 14:33:32,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:32,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573210007] [2021-11-02 14:33:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:32,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 14:33:32,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:32,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573210007] [2021-11-02 14:33:32,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573210007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:33:32,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069410016] [2021-11-02 14:33:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:32,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:33:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:33:32,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:33:32,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 14:33:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:32,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 14:33:32,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:33:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:32,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:33:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:32,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069410016] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:33:32,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 14:33:32,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-11-02 14:33:32,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484036515] [2021-11-02 14:33:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 14:33:32,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 14:33:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:33:32,964 INFO L87 Difference]: Start difference. First operand 19071 states and 25591 transitions. Second operand has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:34,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:36,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:37,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:38,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:47,087 INFO L93 Difference]: Finished difference Result 38918 states and 52668 transitions. [2021-11-02 14:33:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 14:33:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-02 14:33:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:47,111 INFO L225 Difference]: With dead ends: 38918 [2021-11-02 14:33:47,112 INFO L226 Difference]: Without dead ends: 19956 [2021-11-02 14:33:47,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 330.73ms TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2021-11-02 14:33:47,129 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1155 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9511.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.54ms SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11394.43ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:47,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 0 Invalid, 5131 Unknown, 0 Unchecked, 8.54ms Time], IncrementalHoareTripleChecker [121 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 11394.43ms Time] [2021-11-02 14:33:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19956 states. [2021-11-02 14:33:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19956 to 19796. [2021-11-02 14:33:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 19788 states have (on average 1.3275217303416211) internal successors, (26269), 19795 states have internal predecessors, (26269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 26269 transitions. [2021-11-02 14:33:49,475 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 26269 transitions. Word has length 96 [2021-11-02 14:33:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:49,475 INFO L470 AbstractCegarLoop]: Abstraction has 19796 states and 26269 transitions. [2021-11-02 14:33:49,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 26269 transitions. [2021-11-02 14:33:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 14:33:49,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:49,478 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:33:49,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-02 14:33:49,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 14:33:49,678 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:33:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:49,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1609962652, now seen corresponding path program 1 times [2021-11-02 14:33:49,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:49,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326917944] [2021-11-02 14:33:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:49,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 14:33:49,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:49,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326917944] [2021-11-02 14:33:49,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326917944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:33:49,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:33:49,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:33:49,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179139803] [2021-11-02 14:33:49,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:33:49,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:33:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:33:49,748 INFO L87 Difference]: Start difference. First operand 19796 states and 26269 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:55,312 INFO L93 Difference]: Finished difference Result 39528 states and 52448 transitions. [2021-11-02 14:33:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:33:55,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-02 14:33:55,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:55,338 INFO L225 Difference]: With dead ends: 39528 [2021-11-02 14:33:55,338 INFO L226 Difference]: Without dead ends: 19835 [2021-11-02 14:33:55,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:33:55,358 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2475.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3259.90ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:55,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 2132 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [6 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 3259.90ms Time] [2021-11-02 14:33:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19835 states. [2021-11-02 14:33:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19835 to 19796. [2021-11-02 14:33:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 19788 states have (on average 1.3272185162724883) internal successors, (26263), 19795 states have internal predecessors, (26263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 26263 transitions. [2021-11-02 14:33:57,476 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 26263 transitions. Word has length 107 [2021-11-02 14:33:57,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:57,477 INFO L470 AbstractCegarLoop]: Abstraction has 19796 states and 26263 transitions. [2021-11-02 14:33:57,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:33:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 26263 transitions. [2021-11-02 14:33:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 14:33:57,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:57,479 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:33:57,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 14:33:57,479 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:33:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash 99175275, now seen corresponding path program 1 times [2021-11-02 14:33:57,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:57,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752607109] [2021-11-02 14:33:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:57,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 14:33:57,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:57,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752607109] [2021-11-02 14:33:57,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752607109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:33:57,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:33:57,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:33:57,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385442522] [2021-11-02 14:33:57,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:33:57,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:33:57,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:33:57,546 INFO L87 Difference]: Start difference. First operand 19796 states and 26263 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:34:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:34:04,111 INFO L93 Difference]: Finished difference Result 39551 states and 52473 transitions. [2021-11-02 14:34:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:34:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-02 14:34:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:34:04,136 INFO L225 Difference]: With dead ends: 39551 [2021-11-02 14:34:04,136 INFO L226 Difference]: Without dead ends: 19855 [2021-11-02 14:34:04,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.86ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:34:04,151 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3202.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4244.87ms IncrementalHoareTripleChecker+Time [2021-11-02 14:34:04,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 2859 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [1 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 4244.87ms Time] [2021-11-02 14:34:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19855 states. [2021-11-02 14:34:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19855 to 19805. [2021-11-02 14:34:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19805 states, 19797 states have (on average 1.3270697580441482) internal successors, (26272), 19804 states have internal predecessors, (26272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:34:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19805 states to 19805 states and 26272 transitions. [2021-11-02 14:34:06,390 INFO L78 Accepts]: Start accepts. Automaton has 19805 states and 26272 transitions. Word has length 112 [2021-11-02 14:34:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:34:06,390 INFO L470 AbstractCegarLoop]: Abstraction has 19805 states and 26272 transitions. [2021-11-02 14:34:06,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:34:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 19805 states and 26272 transitions. [2021-11-02 14:34:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 14:34:06,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:34:06,393 INFO L514 BasicCegarLoop]: trace histogram [9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:34:06,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 14:34:06,393 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:34:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:34:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1419328376, now seen corresponding path program 1 times [2021-11-02 14:34:06,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:34:06,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547848899] [2021-11-02 14:34:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:34:06,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:34:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:34:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-02 14:34:06,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:34:06,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547848899] [2021-11-02 14:34:06,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547848899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:34:06,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:34:06,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:34:06,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876475786] [2021-11-02 14:34:06,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:34:06,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:34:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:34:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:34:06,537 INFO L87 Difference]: Start difference. First operand 19805 states and 26272 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:34:08,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:34:10,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:34:12,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:34:14,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:34:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:34:25,764 INFO L93 Difference]: Finished difference Result 71984 states and 96555 transitions. [2021-11-02 14:34:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:34:25,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-02 14:34:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:34:25,842 INFO L225 Difference]: With dead ends: 71984 [2021-11-02 14:34:25,843 INFO L226 Difference]: Without dead ends: 53436 [2021-11-02 14:34:25,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.80ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:34:25,868 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2504 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11295.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.92ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13330.83ms IncrementalHoareTripleChecker+Time [2021-11-02 14:34:25,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 0 Invalid, 6003 Unknown, 0 Unchecked, 11.92ms Time], IncrementalHoareTripleChecker [20 Valid, 5982 Invalid, 1 Unknown, 0 Unchecked, 13330.83ms Time] [2021-11-02 14:34:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53436 states. [2021-11-02 14:34:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53436 to 19821. [2021-11-02 14:34:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19821 states, 19813 states have (on average 1.3263009135416142) internal successors, (26278), 19820 states have internal predecessors, (26278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:34:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19821 states to 19821 states and 26278 transitions. [2021-11-02 14:34:28,411 INFO L78 Accepts]: Start accepts. Automaton has 19821 states and 26278 transitions. Word has length 115 [2021-11-02 14:34:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:34:28,411 INFO L470 AbstractCegarLoop]: Abstraction has 19821 states and 26278 transitions. [2021-11-02 14:34:28,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:34:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 19821 states and 26278 transitions. [2021-11-02 14:34:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 14:34:28,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:34:28,413 INFO L514 BasicCegarLoop]: trace histogram [9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:34:28,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 14:34:28,413 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-02 14:34:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:34:28,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1403809658, now seen corresponding path program 1 times [2021-11-02 14:34:28,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:34:28,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248129666] [2021-11-02 14:34:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:34:28,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:34:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:34:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-02 14:34:29,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:34:29,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248129666] [2021-11-02 14:34:29,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248129666] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:34:29,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183224798] [2021-11-02 14:34:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:34:29,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:34:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:34:29,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:34:29,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 14:34:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:34:29,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-02 14:34:29,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:34:29,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:29,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-02 14:34:30,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:30,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-02 14:34:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:30,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-02 14:34:30,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:30,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-02 14:34:30,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:30,337 INFO L354 Elim1Store]: treesize reduction 590, result has 21.0 percent of original size [2021-11-02 14:34:30,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 386 treesize of output 414 [2021-11-02 14:34:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:31,946 INFO L354 Elim1Store]: treesize reduction 34, result has 46.0 percent of original size [2021-11-02 14:34:31,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 103 [2021-11-02 14:34:32,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,335 INFO L354 Elim1Store]: treesize reduction 49, result has 22.2 percent of original size [2021-11-02 14:34:32,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 72 treesize of output 52 [2021-11-02 14:34:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 29 [2021-11-02 14:34:32,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 14:34:32,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:32,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 75 [2021-11-02 14:34:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 14:34:33,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2021-11-02 14:34:33,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-11-02 14:34:33,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:33,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-11-02 14:34:42,681 WARN L210 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-02 14:34:42,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2021-11-02 14:34:42,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:34:42,906 INFO L354 Elim1Store]: treesize reduction 244, result has 26.7 percent of original size [2021-11-02 14:34:42,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 75 treesize of output 122 [2021-11-02 14:34:42,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2021-11-02 14:35:00,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:00,284 INFO L354 Elim1Store]: treesize reduction 318, result has 20.1 percent of original size [2021-11-02 14:35:00,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 163 treesize of output 158 [2021-11-02 14:35:07,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-02 14:35:07,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,380 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-02 14:35:07,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2021-11-02 14:35:07,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-02 14:35:07,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-02 14:35:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,705 INFO L354 Elim1Store]: treesize reduction 207, result has 21.3 percent of original size [2021-11-02 14:35:07,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 115 [2021-11-02 14:35:07,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,764 INFO L354 Elim1Store]: treesize reduction 97, result has 28.1 percent of original size [2021-11-02 14:35:07,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 104 [2021-11-02 14:35:07,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:07,796 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-02 14:35:07,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 89 [2021-11-02 14:35:08,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:08,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:08,365 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-02 14:35:08,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 101 [2021-11-02 14:35:08,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:08,846 INFO L354 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2021-11-02 14:35:08,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 115 [2021-11-02 14:35:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:12,238 INFO L354 Elim1Store]: treesize reduction 92, result has 24.0 percent of original size [2021-11-02 14:35:12,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 129 [2021-11-02 14:35:12,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:12,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:13,029 INFO L354 Elim1Store]: treesize reduction 512, result has 24.8 percent of original size [2021-11-02 14:35:13,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 236 [2021-11-02 14:35:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:14,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:14,611 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:35:14,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:35:31,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:31,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:32,300 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:35:32,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:35:49,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:49,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:35:49,854 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:35:49,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:36:13,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:36:13,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:36:13,424 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:36:13,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:36:32,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:36:32,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:36:33,111 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:36:33,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:36:57,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:36:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:36:58,360 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:36:58,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:37:17,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:37:17,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:37:17,372 INFO L354 Elim1Store]: treesize reduction 538, result has 36.3 percent of original size [2021-11-02 14:37:17,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:37:40,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:37:41,396 INFO L354 Elim1Store]: treesize reduction 580, result has 35.1 percent of original size [2021-11-02 14:37:41,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 47 case distinctions, treesize of input 226 treesize of output 464 [2021-11-02 14:37:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:37:59,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-02 14:37:59,416 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-02 14:37:59,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2021-11-02 14:38:03,064 INFO L354 Elim1Store]: treesize reduction 58, result has 33.3 percent of original size [2021-11-02 14:38:03,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 46 [2021-11-02 14:38:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-02 14:38:03,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:41:57,397 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381| Int) (ULTIMATE.start_iowarrior_probe_~interface.base Int) (ULTIMATE.start_iowarrior_probe_~interface.offset Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_41| Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_43| Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_45| Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_39| Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (+ |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_45| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_43| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_41| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (+ |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr381_39| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store .cse0 c_ULTIMATE.start_iowarrior_probe_~dev~8.base (let ((.cse1 (store (select .cse0 c_ULTIMATE.start_iowarrior_probe_~dev~8.base) (+ c_ULTIMATE.start_iowarrior_probe_~dev~8.offset 450) 1))) (store .cse1 (+ c_ULTIMATE.start_iowarrior_probe_~dev~8.offset 168) (select (select (store .cse0 c_ULTIMATE.start_iowarrior_probe_~dev~8.base .cse1) ULTIMATE.start_iowarrior_probe_~interface.base) (+ 28 ULTIMATE.start_iowarrior_probe_~interface.offset)))))) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false Killed by 15