./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 173e3943 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-dev-173e394 [2021-11-06 12:01:53,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 12:01:53,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 12:01:53,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 12:01:53,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 12:01:53,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 12:01:53,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 12:01:53,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 12:01:53,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 12:01:53,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 12:01:53,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 12:01:53,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 12:01:53,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 12:01:53,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 12:01:53,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 12:01:53,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 12:01:53,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 12:01:53,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 12:01:53,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 12:01:53,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 12:01:53,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 12:01:53,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 12:01:53,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 12:01:53,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 12:01:53,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 12:01:53,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 12:01:53,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 12:01:53,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 12:01:53,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 12:01:53,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 12:01:53,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 12:01:53,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 12:01:53,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 12:01:53,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 12:01:53,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 12:01:53,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 12:01:53,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 12:01:53,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 12:01:53,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 12:01:53,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 12:01:53,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 12:01:53,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 12:01:54,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 12:01:54,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 12:01:54,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 12:01:54,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 12:01:54,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 12:01:54,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 12:01:54,016 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 12:01:54,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 12:01:54,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 12:01:54,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 12:01:54,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 12:01:54,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 12:01:54,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 12:01:54,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 12:01:54,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 12:01:54,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 12:01:54,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 12:01:54,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 12:01:54,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 12:01:54,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:01:54,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 12:01:54,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 12:01:54,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 12:01:54,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 12:01:54,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 12:01:54,039 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 12:01:54,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 12:01:54,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 12:01:54,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 12:01:54,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-11-06 12:01:54,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 12:01:54,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 12:01:54,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 12:01:54,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 12:01:54,281 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 12:01:54,282 INFO L432 ainManager$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 [2021-11-06 12:01:54,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0134c487d/50ce87d84b7e4a8dae1e84e11d0ceef3/FLAGd515b508e [2021-11-06 12:01:54,900 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 12:01:54,901 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 [2021-11-06 12:01:54,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0134c487d/50ce87d84b7e4a8dae1e84e11d0ceef3/FLAGd515b508e [2021-11-06 12:01:55,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0134c487d/50ce87d84b7e4a8dae1e84e11d0ceef3 [2021-11-06 12:01:55,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 12:01:55,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 12:01:55,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 12:01:55,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 12:01:55,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 12:01:55,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:01:55" (1/1) ... [2021-11-06 12:01:55,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f317d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:55, skipping insertion in model container [2021-11-06 12:01:55,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:01:55" (1/1) ... [2021-11-06 12:01:55,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 12:01:55,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 12:01:55,762 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] [2021-11-06 12:01:55,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:01:55,811 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 12:01:55,968 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] [2021-11-06 12:01:55,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:01:56,015 INFO L208 MainTranslator]: Completed translation [2021-11-06 12:01:56,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56 WrapperNode [2021-11-06 12:01:56,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 12:01:56,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 12:01:56,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 12:01:56,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 12:01:56,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 12:01:56,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 12:01:56,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 12:01:56,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 12:01:56,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 12:01:56,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 12:01:56,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 12:01:56,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 12:01:56,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (1/1) ... [2021-11-06 12:01:56,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:01:56,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:01:56,346 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) [2021-11-06 12:01:56,352 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 [2021-11-06 12:01:56,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 12:01:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 12:01:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 12:01:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 12:01:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 12:01:56,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 12:01:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 12:01:56,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 12:01:56,803 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:56,809 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:56,811 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:56,816 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:56,820 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:56,821 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:56,845 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##254: assume false; [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##255: assume !false; [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume !false; [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume false; [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##447: assume !false; [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##446: assume false; [2021-11-06 12:01:59,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume !false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##115: assume false; [2021-11-06 12:01:59,259 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##116: assume !false; [2021-11-06 12:01:59,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 12:01:59,265 INFO L299 CfgBuilder]: Removed 509 assume(true) statements. [2021-11-06 12:01:59,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:01:59 BoogieIcfgContainer [2021-11-06 12:01:59,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 12:01:59,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 12:01:59,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 12:01:59,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 12:01:59,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:01:55" (1/3) ... [2021-11-06 12:01:59,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17131d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:01:59, skipping insertion in model container [2021-11-06 12:01:59,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:56" (2/3) ... [2021-11-06 12:01:59,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17131d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:01:59, skipping insertion in model container [2021-11-06 12:01:59,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:01:59" (3/3) ... [2021-11-06 12:01:59,272 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-06 12:01:59,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 12:01:59,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 12:01:59,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 12:01:59,326 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 [2021-11-06 12:01:59,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 12:01:59,340 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) [2021-11-06 12:01:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 12:01:59,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:01:59,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:01:59,344 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)] === [2021-11-06 12:01:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:01:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1571270776, now seen corresponding path program 1 times [2021-11-06 12:01:59,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:01:59,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259678824] [2021-11-06 12:01:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:01:59,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:01:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:01:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:01:59,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:01:59,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259678824] [2021-11-06 12:01:59,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259678824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:01:59,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:01:59,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 12:01:59,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346344098] [2021-11-06 12:01:59,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:01:59,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:01:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:01:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:01:59,677 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) [2021-11-06 12:01:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:01:59,788 INFO L93 Difference]: Finished difference Result 1644 states and 2443 transitions. [2021-11-06 12:01:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:01:59,789 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 [2021-11-06 12:01:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:01:59,815 INFO L225 Difference]: With dead ends: 1644 [2021-11-06 12:01:59,815 INFO L226 Difference]: Without dead ends: 1073 [2021-11-06 12:01:59,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:01:59,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-06 12:01:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1061. [2021-11-06 12:01:59,890 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) [2021-11-06 12:01:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1408 transitions. [2021-11-06 12:01:59,892 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1408 transitions. Word has length 9 [2021-11-06 12:01:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:01:59,893 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1408 transitions. [2021-11-06 12:01:59,893 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) [2021-11-06 12:01:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1408 transitions. [2021-11-06 12:01:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 12:01:59,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:01:59,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:01:59,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 12:01:59,895 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)] === [2021-11-06 12:01:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:01:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1464753323, now seen corresponding path program 1 times [2021-11-06 12:01:59,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:01:59,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672937561] [2021-11-06 12:01:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:01:59,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:01:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:00,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:00,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672937561] [2021-11-06 12:02:00,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672937561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:00,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:00,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 12:02:00,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299212533] [2021-11-06 12:02:00,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:02:00,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:02:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:02:00,039 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) [2021-11-06 12:02:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:00,082 INFO L93 Difference]: Finished difference Result 3165 states and 4205 transitions. [2021-11-06 12:02:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:02:00,083 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 [2021-11-06 12:02:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:00,088 INFO L225 Difference]: With dead ends: 3165 [2021-11-06 12:02:00,088 INFO L226 Difference]: Without dead ends: 2108 [2021-11-06 12:02:00,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:02:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-11-06 12:02:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2088. [2021-11-06 12:02:00,131 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) [2021-11-06 12:02:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2780 transitions. [2021-11-06 12:02:00,134 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2780 transitions. Word has length 10 [2021-11-06 12:02:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:00,135 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2780 transitions. [2021-11-06 12:02:00,135 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) [2021-11-06 12:02:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2780 transitions. [2021-11-06 12:02:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 12:02:00,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:00,137 INFO L513 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] [2021-11-06 12:02:00,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 12:02:00,137 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)] === [2021-11-06 12:02:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash 843509326, now seen corresponding path program 1 times [2021-11-06 12:02:00,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:00,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311826114] [2021-11-06 12:02:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:00,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:00,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:00,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311826114] [2021-11-06 12:02:00,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311826114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:00,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:00,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:02:00,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777569407] [2021-11-06 12:02:00,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:02:00,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:02:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:02:00,211 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) [2021-11-06 12:02:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:00,327 INFO L93 Difference]: Finished difference Result 5166 states and 6898 transitions. [2021-11-06 12:02:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:02:00,328 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 [2021-11-06 12:02:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:00,336 INFO L225 Difference]: With dead ends: 5166 [2021-11-06 12:02:00,336 INFO L226 Difference]: Without dead ends: 3085 [2021-11-06 12:02:00,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:02:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2021-11-06 12:02:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3068. [2021-11-06 12:02:00,383 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) [2021-11-06 12:02:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4091 transitions. [2021-11-06 12:02:00,388 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4091 transitions. Word has length 35 [2021-11-06 12:02:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:00,389 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4091 transitions. [2021-11-06 12:02:00,389 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) [2021-11-06 12:02:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4091 transitions. [2021-11-06 12:02:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 12:02:00,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:00,391 INFO L513 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] [2021-11-06 12:02:00,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 12:02:00,391 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)] === [2021-11-06 12:02:00,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1573275523, now seen corresponding path program 1 times [2021-11-06 12:02:00,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:00,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292169324] [2021-11-06 12:02:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:00,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:00,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:00,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292169324] [2021-11-06 12:02:00,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292169324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:00,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:00,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:02:00,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943662559] [2021-11-06 12:02:00,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:02:00,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:02:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:02:00,460 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) [2021-11-06 12:02:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:00,561 INFO L93 Difference]: Finished difference Result 8160 states and 10969 transitions. [2021-11-06 12:02:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:02:00,561 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 [2021-11-06 12:02:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:00,575 INFO L225 Difference]: With dead ends: 8160 [2021-11-06 12:02:00,575 INFO L226 Difference]: Without dead ends: 5097 [2021-11-06 12:02:00,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:02:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-11-06 12:02:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 5074. [2021-11-06 12:02:00,657 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) [2021-11-06 12:02:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6844 transitions. [2021-11-06 12:02:00,667 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6844 transitions. Word has length 43 [2021-11-06 12:02:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:00,668 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 6844 transitions. [2021-11-06 12:02:00,668 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) [2021-11-06 12:02:00,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6844 transitions. [2021-11-06 12:02:00,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 12:02:00,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:00,670 INFO L513 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] [2021-11-06 12:02:00,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 12:02:00,670 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)] === [2021-11-06 12:02:00,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash 250462999, now seen corresponding path program 1 times [2021-11-06 12:02:00,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:00,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538365346] [2021-11-06 12:02:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:00,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:00,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:00,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538365346] [2021-11-06 12:02:00,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538365346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:00,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:00,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:02:00,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981171649] [2021-11-06 12:02:00,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:02:00,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:00,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:02:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:02:00,784 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) [2021-11-06 12:02:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:01,602 INFO L93 Difference]: Finished difference Result 13775 states and 18604 transitions. [2021-11-06 12:02:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:02:01,603 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 [2021-11-06 12:02:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:01,625 INFO L225 Difference]: With dead ends: 13775 [2021-11-06 12:02:01,625 INFO L226 Difference]: Without dead ends: 8708 [2021-11-06 12:02:01,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8708 states. [2021-11-06 12:02:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8708 to 8346. [2021-11-06 12:02:01,825 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) [2021-11-06 12:02:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8346 states to 8346 states and 11377 transitions. [2021-11-06 12:02:01,844 INFO L78 Accepts]: Start accepts. Automaton has 8346 states and 11377 transitions. Word has length 54 [2021-11-06 12:02:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:01,844 INFO L470 AbstractCegarLoop]: Abstraction has 8346 states and 11377 transitions. [2021-11-06 12:02:01,845 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) [2021-11-06 12:02:01,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8346 states and 11377 transitions. [2021-11-06 12:02:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 12:02:01,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:01,850 INFO L513 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] [2021-11-06 12:02:01,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 12:02:01,851 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)] === [2021-11-06 12:02:01,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1594904167, now seen corresponding path program 1 times [2021-11-06 12:02:01,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:01,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053395734] [2021-11-06 12:02:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:01,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:01,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:01,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053395734] [2021-11-06 12:02:01,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053395734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:01,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:01,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 12:02:01,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872912036] [2021-11-06 12:02:01,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:02:01,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:02:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:02:01,937 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) [2021-11-06 12:02:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:03,324 INFO L93 Difference]: Finished difference Result 16728 states and 22801 transitions. [2021-11-06 12:02:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:02:03,325 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 [2021-11-06 12:02:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:03,357 INFO L225 Difference]: With dead ends: 16728 [2021-11-06 12:02:03,357 INFO L226 Difference]: Without dead ends: 8369 [2021-11-06 12:02:03,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2021-11-06 12:02:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 8313. [2021-11-06 12:02:03,604 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) [2021-11-06 12:02:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 11336 transitions. [2021-11-06 12:02:03,617 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 11336 transitions. Word has length 54 [2021-11-06 12:02:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:03,618 INFO L470 AbstractCegarLoop]: Abstraction has 8313 states and 11336 transitions. [2021-11-06 12:02:03,619 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) [2021-11-06 12:02:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 11336 transitions. [2021-11-06 12:02:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 12:02:03,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:03,621 INFO L513 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] [2021-11-06 12:02:03,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 12:02:03,621 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)] === [2021-11-06 12:02:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash -133909066, now seen corresponding path program 1 times [2021-11-06 12:02:03,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:03,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361298711] [2021-11-06 12:02:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:03,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 12:02:03,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:03,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361298711] [2021-11-06 12:02:03,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361298711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:03,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:03,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 12:02:03,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769289892] [2021-11-06 12:02:03,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 12:02:03,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:03,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 12:02:03,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-06 12:02:03,821 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) [2021-11-06 12:02:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:10,957 INFO L93 Difference]: Finished difference Result 40305 states and 54708 transitions. [2021-11-06 12:02:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 12:02:10,957 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 [2021-11-06 12:02:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:11,015 INFO L225 Difference]: With dead ends: 40305 [2021-11-06 12:02:11,015 INFO L226 Difference]: Without dead ends: 31999 [2021-11-06 12:02:11,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-11-06 12:02:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31999 states. [2021-11-06 12:02:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31999 to 8313. [2021-11-06 12:02:11,410 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) [2021-11-06 12:02:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 11320 transitions. [2021-11-06 12:02:11,426 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 11320 transitions. Word has length 65 [2021-11-06 12:02:11,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:11,427 INFO L470 AbstractCegarLoop]: Abstraction has 8313 states and 11320 transitions. [2021-11-06 12:02:11,428 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) [2021-11-06 12:02:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 11320 transitions. [2021-11-06 12:02:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 12:02:11,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:11,430 INFO L513 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] [2021-11-06 12:02:11,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 12:02:11,430 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)] === [2021-11-06 12:02:11,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash -943255692, now seen corresponding path program 1 times [2021-11-06 12:02:11,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:11,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637781726] [2021-11-06 12:02:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:11,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:11,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:11,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637781726] [2021-11-06 12:02:11,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637781726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:11,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:11,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 12:02:11,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850898103] [2021-11-06 12:02:11,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:02:11,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:02:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:11,547 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) [2021-11-06 12:02:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:13,007 INFO L93 Difference]: Finished difference Result 15053 states and 20457 transitions. [2021-11-06 12:02:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 12:02:13,008 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 [2021-11-06 12:02:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:13,017 INFO L225 Difference]: With dead ends: 15053 [2021-11-06 12:02:13,017 INFO L226 Difference]: Without dead ends: 6733 [2021-11-06 12:02:13,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:02:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2021-11-06 12:02:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6588. [2021-11-06 12:02:13,150 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) [2021-11-06 12:02:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 8946 transitions. [2021-11-06 12:02:13,161 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 8946 transitions. Word has length 65 [2021-11-06 12:02:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:13,161 INFO L470 AbstractCegarLoop]: Abstraction has 6588 states and 8946 transitions. [2021-11-06 12:02:13,162 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) [2021-11-06 12:02:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 8946 transitions. [2021-11-06 12:02:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 12:02:13,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:13,163 INFO L513 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] [2021-11-06 12:02:13,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 12:02:13,164 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)] === [2021-11-06 12:02:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash 164963298, now seen corresponding path program 1 times [2021-11-06 12:02:13,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:13,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289949662] [2021-11-06 12:02:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:13,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:13,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:13,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289949662] [2021-11-06 12:02:13,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289949662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:13,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:13,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 12:02:13,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990944339] [2021-11-06 12:02:13,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:02:13,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:02:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:13,255 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) [2021-11-06 12:02:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:13,632 INFO L93 Difference]: Finished difference Result 19648 states and 26596 transitions. [2021-11-06 12:02:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 12:02:13,633 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 [2021-11-06 12:02:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:13,660 INFO L225 Difference]: With dead ends: 19648 [2021-11-06 12:02:13,660 INFO L226 Difference]: Without dead ends: 13058 [2021-11-06 12:02:13,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:02:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13058 states. [2021-11-06 12:02:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13058 to 6597. [2021-11-06 12:02:13,842 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) [2021-11-06 12:02:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6597 states to 6597 states and 8952 transitions. [2021-11-06 12:02:13,851 INFO L78 Accepts]: Start accepts. Automaton has 6597 states and 8952 transitions. Word has length 65 [2021-11-06 12:02:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:13,851 INFO L470 AbstractCegarLoop]: Abstraction has 6597 states and 8952 transitions. [2021-11-06 12:02:13,851 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) [2021-11-06 12:02:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6597 states and 8952 transitions. [2021-11-06 12:02:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 12:02:13,852 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:13,852 INFO L513 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] [2021-11-06 12:02:13,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 12:02:13,854 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)] === [2021-11-06 12:02:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:13,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2093236000, now seen corresponding path program 1 times [2021-11-06 12:02:13,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:13,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072957656] [2021-11-06 12:02:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:13,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:13,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:13,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072957656] [2021-11-06 12:02:13,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072957656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:13,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:13,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 12:02:13,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221694960] [2021-11-06 12:02:13,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:02:13,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:13,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:02:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:02:13,947 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) [2021-11-06 12:02:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:14,626 INFO L93 Difference]: Finished difference Result 28953 states and 39167 transitions. [2021-11-06 12:02:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 12:02:14,627 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 [2021-11-06 12:02:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:14,662 INFO L225 Difference]: With dead ends: 28953 [2021-11-06 12:02:14,662 INFO L226 Difference]: Without dead ends: 22351 [2021-11-06 12:02:14,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-06 12:02:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22351 states. [2021-11-06 12:02:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22351 to 6609. [2021-11-06 12:02:15,044 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) [2021-11-06 12:02:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 8961 transitions. [2021-11-06 12:02:15,055 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 8961 transitions. Word has length 65 [2021-11-06 12:02:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:15,055 INFO L470 AbstractCegarLoop]: Abstraction has 6609 states and 8961 transitions. [2021-11-06 12:02:15,056 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) [2021-11-06 12:02:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 8961 transitions. [2021-11-06 12:02:15,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 12:02:15,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:15,057 INFO L513 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] [2021-11-06 12:02:15,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 12:02:15,058 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)] === [2021-11-06 12:02:15,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1778084574, now seen corresponding path program 1 times [2021-11-06 12:02:15,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:15,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277156188] [2021-11-06 12:02:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:15,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:15,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:15,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277156188] [2021-11-06 12:02:15,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277156188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:02:15,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412840448] [2021-11-06 12:02:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:15,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:02:15,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:02:15,156 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) [2021-11-06 12:02:15,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 12:02:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:15,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 12:02:15,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:02:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:15,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412840448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:15,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 12:02:15,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 12:02:15,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791599177] [2021-11-06 12:02:15,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:02:15,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:02:15,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:02:15,706 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) [2021-11-06 12:02:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:17,303 INFO L93 Difference]: Finished difference Result 13293 states and 18004 transitions. [2021-11-06 12:02:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 12:02:17,303 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 [2021-11-06 12:02:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:17,311 INFO L225 Difference]: With dead ends: 13293 [2021-11-06 12:02:17,311 INFO L226 Difference]: Without dead ends: 6676 [2021-11-06 12:02:17,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:02:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-11-06 12:02:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6618. [2021-11-06 12:02:17,581 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) [2021-11-06 12:02:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 8967 transitions. [2021-11-06 12:02:17,590 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 8967 transitions. Word has length 65 [2021-11-06 12:02:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:17,590 INFO L470 AbstractCegarLoop]: Abstraction has 6618 states and 8967 transitions. [2021-11-06 12:02:17,590 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) [2021-11-06 12:02:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 8967 transitions. [2021-11-06 12:02:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 12:02:17,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:17,595 INFO L513 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] [2021-11-06 12:02:17,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 12:02:17,814 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 [2021-11-06 12:02:17,814 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)] === [2021-11-06 12:02:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1983187107, now seen corresponding path program 1 times [2021-11-06 12:02:17,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:17,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136148019] [2021-11-06 12:02:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:17,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:17,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:17,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136148019] [2021-11-06 12:02:17,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136148019] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:02:17,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911829518] [2021-11-06 12:02:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:17,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:02:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:02:17,945 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) [2021-11-06 12:02:17,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 12:02:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 12:02:18,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:02:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:18,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911829518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:18,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 12:02:18,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 12:02:18,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789125216] [2021-11-06 12:02:18,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:02:18,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:02:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:02:18,467 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) [2021-11-06 12:02:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:19,256 INFO L93 Difference]: Finished difference Result 11954 states and 16114 transitions. [2021-11-06 12:02:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 12:02:19,257 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 [2021-11-06 12:02:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:19,262 INFO L225 Difference]: With dead ends: 11954 [2021-11-06 12:02:19,263 INFO L226 Difference]: Without dead ends: 5328 [2021-11-06 12:02:19,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:02:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-11-06 12:02:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5252. [2021-11-06 12:02:19,407 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) [2021-11-06 12:02:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 7056 transitions. [2021-11-06 12:02:19,412 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 7056 transitions. Word has length 67 [2021-11-06 12:02:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:19,413 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 7056 transitions. [2021-11-06 12:02:19,413 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) [2021-11-06 12:02:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 7056 transitions. [2021-11-06 12:02:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 12:02:19,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:19,414 INFO L513 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] [2021-11-06 12:02:19,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 12:02:19,631 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 [2021-11-06 12:02:19,632 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)] === [2021-11-06 12:02:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash 877143517, now seen corresponding path program 1 times [2021-11-06 12:02:19,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:19,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229205263] [2021-11-06 12:02:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:19,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:19,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229205263] [2021-11-06 12:02:19,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229205263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:02:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268040815] [2021-11-06 12:02:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:19,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:02:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:02:19,756 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) [2021-11-06 12:02:19,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 12:02:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:20,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 12:02:20,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:02:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268040815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:02:20,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 12:02:20,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 12:02:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277387093] [2021-11-06 12:02:20,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:02:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:02:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:20,338 INFO L87 Difference]: Start difference. First operand 5252 states and 7056 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2021-11-06 12:02:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:20,594 INFO L93 Difference]: Finished difference Result 13507 states and 18216 transitions. [2021-11-06 12:02:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 12:02:20,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 [2021-11-06 12:02:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:20,603 INFO L225 Difference]: With dead ends: 13507 [2021-11-06 12:02:20,603 INFO L226 Difference]: Without dead ends: 8364 [2021-11-06 12:02:20,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2021-11-06 12:02:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 8148. [2021-11-06 12:02:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8148 states, 8140 states have (on average 1.3555282555282555) internal successors, (11034), 8147 states have internal predecessors, (11034), 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) [2021-11-06 12:02:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8148 states to 8148 states and 11034 transitions. [2021-11-06 12:02:20,822 INFO L78 Accepts]: Start accepts. Automaton has 8148 states and 11034 transitions. Word has length 67 [2021-11-06 12:02:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:20,823 INFO L470 AbstractCegarLoop]: Abstraction has 8148 states and 11034 transitions. [2021-11-06 12:02:20,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2021-11-06 12:02:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 8148 states and 11034 transitions. [2021-11-06 12:02:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:02:20,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:20,824 INFO L513 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] [2021-11-06 12:02:20,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 12:02:21,054 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 [2021-11-06 12:02:21,054 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)] === [2021-11-06 12:02:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -612371812, now seen corresponding path program 1 times [2021-11-06 12:02:21,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:21,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482565702] [2021-11-06 12:02:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:21,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:21,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:21,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482565702] [2021-11-06 12:02:21,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482565702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:21,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:21,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 12:02:21,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544308636] [2021-11-06 12:02:21,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 12:02:21,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 12:02:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:02:21,351 INFO L87 Difference]: Start difference. First operand 8148 states and 11034 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) [2021-11-06 12:02:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:28,869 INFO L93 Difference]: Finished difference Result 8521 states and 11476 transitions. [2021-11-06 12:02:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 12:02:28,870 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 [2021-11-06 12:02:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:28,878 INFO L225 Difference]: With dead ends: 8521 [2021-11-06 12:02:28,878 INFO L226 Difference]: Without dead ends: 8497 [2021-11-06 12:02:28,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-11-06 12:02:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8497 states. [2021-11-06 12:02:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8497 to 8224. [2021-11-06 12:02:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8224 states, 8216 states have (on average 1.3544303797468353) internal successors, (11128), 8223 states have internal predecessors, (11128), 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) [2021-11-06 12:02:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8224 states to 8224 states and 11128 transitions. [2021-11-06 12:02:29,123 INFO L78 Accepts]: Start accepts. Automaton has 8224 states and 11128 transitions. Word has length 68 [2021-11-06 12:02:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:29,123 INFO L470 AbstractCegarLoop]: Abstraction has 8224 states and 11128 transitions. [2021-11-06 12:02:29,124 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) [2021-11-06 12:02:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8224 states and 11128 transitions. [2021-11-06 12:02:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:02:29,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:29,126 INFO L513 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] [2021-11-06 12:02:29,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 12:02:29,126 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)] === [2021-11-06 12:02:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1421718438, now seen corresponding path program 1 times [2021-11-06 12:02:29,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:29,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917256501] [2021-11-06 12:02:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:29,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:29,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:29,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917256501] [2021-11-06 12:02:29,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917256501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:29,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:29,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 12:02:29,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502962771] [2021-11-06 12:02:29,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 12:02:29,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 12:02:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:02:29,329 INFO L87 Difference]: Start difference. First operand 8224 states and 11128 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) [2021-11-06 12:02:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:30,865 INFO L93 Difference]: Finished difference Result 46822 states and 63443 transitions. [2021-11-06 12:02:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 12:02:30,865 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 [2021-11-06 12:02:30,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:30,918 INFO L225 Difference]: With dead ends: 46822 [2021-11-06 12:02:30,918 INFO L226 Difference]: Without dead ends: 38690 [2021-11-06 12:02:30,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-06 12:02:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38690 states. [2021-11-06 12:02:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38690 to 8163. [2021-11-06 12:02:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8163 states, 8155 states have (on average 1.3543838136112814) internal successors, (11045), 8162 states have internal predecessors, (11045), 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) [2021-11-06 12:02:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8163 states to 8163 states and 11045 transitions. [2021-11-06 12:02:31,449 INFO L78 Accepts]: Start accepts. Automaton has 8163 states and 11045 transitions. Word has length 68 [2021-11-06 12:02:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:31,450 INFO L470 AbstractCegarLoop]: Abstraction has 8163 states and 11045 transitions. [2021-11-06 12:02:31,450 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) [2021-11-06 12:02:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8163 states and 11045 transitions. [2021-11-06 12:02:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:02:31,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:31,455 INFO L513 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] [2021-11-06 12:02:31,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 12:02:31,456 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)] === [2021-11-06 12:02:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -965460194, now seen corresponding path program 1 times [2021-11-06 12:02:31,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:31,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034518789] [2021-11-06 12:02:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:31,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:31,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:31,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034518789] [2021-11-06 12:02:31,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034518789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:31,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:31,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 12:02:31,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97025310] [2021-11-06 12:02:31,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 12:02:31,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:31,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 12:02:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:02:31,685 INFO L87 Difference]: Start difference. First operand 8163 states and 11045 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) [2021-11-06 12:02:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:41,133 INFO L93 Difference]: Finished difference Result 8515 states and 11465 transitions. [2021-11-06 12:02:41,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 12:02:41,133 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 [2021-11-06 12:02:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:41,142 INFO L225 Difference]: With dead ends: 8515 [2021-11-06 12:02:41,142 INFO L226 Difference]: Without dead ends: 8491 [2021-11-06 12:02:41,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-06 12:02:41,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8491 states. [2021-11-06 12:02:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8491 to 8239. [2021-11-06 12:02:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8239 states, 8231 states have (on average 1.353177013728587) internal successors, (11138), 8238 states have internal predecessors, (11138), 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) [2021-11-06 12:02:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 11138 transitions. [2021-11-06 12:02:41,484 INFO L78 Accepts]: Start accepts. Automaton has 8239 states and 11138 transitions. Word has length 68 [2021-11-06 12:02:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:41,484 INFO L470 AbstractCegarLoop]: Abstraction has 8239 states and 11138 transitions. [2021-11-06 12:02:41,484 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) [2021-11-06 12:02:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8239 states and 11138 transitions. [2021-11-06 12:02:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:02:41,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:41,486 INFO L513 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] [2021-11-06 12:02:41,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 12:02:41,486 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)] === [2021-11-06 12:02:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1774806820, now seen corresponding path program 1 times [2021-11-06 12:02:41,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:41,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840060986] [2021-11-06 12:02:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:41,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:41,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:41,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840060986] [2021-11-06 12:02:41,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840060986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:41,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:41,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 12:02:41,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593360638] [2021-11-06 12:02:41,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 12:02:41,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 12:02:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-06 12:02:41,908 INFO L87 Difference]: Start difference. First operand 8239 states and 11138 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) [2021-11-06 12:02:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:49,134 INFO L93 Difference]: Finished difference Result 33218 states and 45261 transitions. [2021-11-06 12:02:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-06 12:02:49,135 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 [2021-11-06 12:02:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:49,179 INFO L225 Difference]: With dead ends: 33218 [2021-11-06 12:02:49,179 INFO L226 Difference]: Without dead ends: 33127 [2021-11-06 12:02:49,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1438 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=993, Invalid=3563, Unknown=0, NotChecked=0, Total=4556 [2021-11-06 12:02:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33127 states. [2021-11-06 12:02:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33127 to 8255. [2021-11-06 12:02:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8255 states, 8247 states have (on average 1.3514005092761003) internal successors, (11145), 8254 states have internal predecessors, (11145), 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) [2021-11-06 12:02:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8255 states to 8255 states and 11145 transitions. [2021-11-06 12:02:49,745 INFO L78 Accepts]: Start accepts. Automaton has 8255 states and 11145 transitions. Word has length 68 [2021-11-06 12:02:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:49,746 INFO L470 AbstractCegarLoop]: Abstraction has 8255 states and 11145 transitions. [2021-11-06 12:02:49,746 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) [2021-11-06 12:02:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 8255 states and 11145 transitions. [2021-11-06 12:02:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:02:49,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:49,747 INFO L513 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] [2021-11-06 12:02:49,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 12:02:49,748 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)] === [2021-11-06 12:02:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:49,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1509043226, now seen corresponding path program 1 times [2021-11-06 12:02:49,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:49,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622242802] [2021-11-06 12:02:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:49,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:49,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:49,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622242802] [2021-11-06 12:02:49,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622242802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:49,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:49,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 12:02:49,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800871800] [2021-11-06 12:02:49,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:02:49,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:02:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:49,839 INFO L87 Difference]: Start difference. First operand 8255 states and 11145 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) [2021-11-06 12:02:52,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:52,146 INFO L93 Difference]: Finished difference Result 48532 states and 65862 transitions. [2021-11-06 12:02:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 12:02:52,147 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 [2021-11-06 12:02:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:52,209 INFO L225 Difference]: With dead ends: 48532 [2021-11-06 12:02:52,210 INFO L226 Difference]: Without dead ends: 44427 [2021-11-06 12:02:52,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 12:02:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44427 states. [2021-11-06 12:02:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44427 to 8330. [2021-11-06 12:02:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 8322 states have (on average 1.3482335976928623) internal successors, (11220), 8329 states have internal predecessors, (11220), 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) [2021-11-06 12:02:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 11220 transitions. [2021-11-06 12:02:52,911 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 11220 transitions. Word has length 68 [2021-11-06 12:02:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:52,911 INFO L470 AbstractCegarLoop]: Abstraction has 8330 states and 11220 transitions. [2021-11-06 12:02:52,911 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) [2021-11-06 12:02:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 11220 transitions. [2021-11-06 12:02:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:02:52,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:52,913 INFO L513 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] [2021-11-06 12:02:52,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 12:02:52,913 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)] === [2021-11-06 12:02:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash -79304676, now seen corresponding path program 1 times [2021-11-06 12:02:52,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:52,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602606929] [2021-11-06 12:02:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:52,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:52,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:52,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602606929] [2021-11-06 12:02:52,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602606929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:52,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:52,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 12:02:52,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276430692] [2021-11-06 12:02:52,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 12:02:52,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 12:02:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:02:52,992 INFO L87 Difference]: Start difference. First operand 8330 states and 11220 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) [2021-11-06 12:02:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:55,887 INFO L93 Difference]: Finished difference Result 49422 states and 67112 transitions. [2021-11-06 12:02:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 12:02:55,887 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 [2021-11-06 12:02:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:55,948 INFO L225 Difference]: With dead ends: 49422 [2021-11-06 12:02:55,948 INFO L226 Difference]: Without dead ends: 41265 [2021-11-06 12:02:55,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-06 12:02:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41265 states. [2021-11-06 12:02:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41265 to 8278. [2021-11-06 12:02:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8278 states, 8270 states have (on average 1.3463119709794438) internal successors, (11134), 8277 states have internal predecessors, (11134), 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) [2021-11-06 12:02:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8278 states to 8278 states and 11134 transitions. [2021-11-06 12:02:56,764 INFO L78 Accepts]: Start accepts. Automaton has 8278 states and 11134 transitions. Word has length 68 [2021-11-06 12:02:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:56,764 INFO L470 AbstractCegarLoop]: Abstraction has 8278 states and 11134 transitions. [2021-11-06 12:02:56,764 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) [2021-11-06 12:02:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand 8278 states and 11134 transitions. [2021-11-06 12:02:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 12:02:56,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:56,766 INFO L513 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] [2021-11-06 12:02:56,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 12:02:56,766 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)] === [2021-11-06 12:02:56,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash 870669115, now seen corresponding path program 1 times [2021-11-06 12:02:56,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:56,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138866483] [2021-11-06 12:02:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:56,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:56,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:56,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138866483] [2021-11-06 12:02:56,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138866483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:56,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:56,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 12:02:56,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786753892] [2021-11-06 12:02:56,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:02:56,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:02:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:02:56,834 INFO L87 Difference]: Start difference. First operand 8278 states and 11134 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) [2021-11-06 12:02:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:02:57,665 INFO L93 Difference]: Finished difference Result 18777 states and 25296 transitions. [2021-11-06 12:02:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:02:57,666 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 [2021-11-06 12:02:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:02:57,676 INFO L225 Difference]: With dead ends: 18777 [2021-11-06 12:02:57,676 INFO L226 Difference]: Without dead ends: 10593 [2021-11-06 12:02:57,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:02:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2021-11-06 12:02:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 5805. [2021-11-06 12:02:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 5797 states have (on average 1.3534586855269968) internal successors, (7846), 5804 states have internal predecessors, (7846), 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) [2021-11-06 12:02:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 7846 transitions. [2021-11-06 12:02:58,149 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 7846 transitions. Word has length 73 [2021-11-06 12:02:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:02:58,149 INFO L470 AbstractCegarLoop]: Abstraction has 5805 states and 7846 transitions. [2021-11-06 12:02:58,149 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) [2021-11-06 12:02:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 7846 transitions. [2021-11-06 12:02:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 12:02:58,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:02:58,151 INFO L513 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] [2021-11-06 12:02:58,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 12:02:58,151 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)] === [2021-11-06 12:02:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:02:58,152 INFO L85 PathProgramCache]: Analyzing trace with hash -599419909, now seen corresponding path program 1 times [2021-11-06 12:02:58,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:02:58,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787995031] [2021-11-06 12:02:58,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:02:58,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:02:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:02:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:02:58,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:02:58,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787995031] [2021-11-06 12:02:58,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787995031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:02:58,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:02:58,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:02:58,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842294451] [2021-11-06 12:02:58,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:02:58,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:02:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:02:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:02:58,222 INFO L87 Difference]: Start difference. First operand 5805 states and 7846 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) [2021-11-06 12:03:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:01,280 INFO L93 Difference]: Finished difference Result 10248 states and 13780 transitions. [2021-11-06 12:03:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:01,280 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 [2021-11-06 12:03:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:01,293 INFO L225 Difference]: With dead ends: 10248 [2021-11-06 12:03:01,293 INFO L226 Difference]: Without dead ends: 10235 [2021-11-06 12:03:01,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2021-11-06 12:03:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 9789. [2021-11-06 12:03:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9781 states have (on average 1.352622431244249) internal successors, (13230), 9788 states have internal predecessors, (13230), 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) [2021-11-06 12:03:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 13230 transitions. [2021-11-06 12:03:02,222 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 13230 transitions. Word has length 73 [2021-11-06 12:03:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:02,222 INFO L470 AbstractCegarLoop]: Abstraction has 9789 states and 13230 transitions. [2021-11-06 12:03:02,223 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) [2021-11-06 12:03:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 13230 transitions. [2021-11-06 12:03:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 12:03:02,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:02,225 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:03:02,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 12:03:02,225 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:03:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash -526132679, now seen corresponding path program 1 times [2021-11-06 12:03:02,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:02,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199720088] [2021-11-06 12:03:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:02,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 12:03:02,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:02,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199720088] [2021-11-06 12:03:02,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199720088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:02,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:02,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 12:03:02,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401330686] [2021-11-06 12:03:02,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:03:02,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:03:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:02,291 INFO L87 Difference]: Start difference. First operand 9789 states and 13230 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) [2021-11-06 12:03:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:04,794 INFO L93 Difference]: Finished difference Result 19435 states and 26275 transitions. [2021-11-06 12:03:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:04,796 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 77 [2021-11-06 12:03:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:04,809 INFO L225 Difference]: With dead ends: 19435 [2021-11-06 12:03:04,809 INFO L226 Difference]: Without dead ends: 9818 [2021-11-06 12:03:04,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:03:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2021-11-06 12:03:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 9795. [2021-11-06 12:03:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9795 states, 9787 states have (on average 1.3518953714110555) internal successors, (13231), 9794 states have internal predecessors, (13231), 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) [2021-11-06 12:03:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 13231 transitions. [2021-11-06 12:03:05,647 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 13231 transitions. Word has length 77 [2021-11-06 12:03:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:05,648 INFO L470 AbstractCegarLoop]: Abstraction has 9795 states and 13231 transitions. [2021-11-06 12:03:05,648 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) [2021-11-06 12:03:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 13231 transitions. [2021-11-06 12:03:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 12:03:05,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:05,650 INFO L513 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] [2021-11-06 12:03:05,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 12:03:05,650 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)] === [2021-11-06 12:03:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash -949414679, now seen corresponding path program 1 times [2021-11-06 12:03:05,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:05,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814218968] [2021-11-06 12:03:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:05,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:03:05,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:05,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814218968] [2021-11-06 12:03:05,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814218968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:05,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:05,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:03:05,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504042661] [2021-11-06 12:03:05,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:03:05,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:03:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:03:05,751 INFO L87 Difference]: Start difference. First operand 9795 states and 13231 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) [2021-11-06 12:03:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:06,585 INFO L93 Difference]: Finished difference Result 16765 states and 22634 transitions. [2021-11-06 12:03:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:03:06,586 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 [2021-11-06 12:03:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:06,594 INFO L225 Difference]: With dead ends: 16765 [2021-11-06 12:03:06,594 INFO L226 Difference]: Without dead ends: 7144 [2021-11-06 12:03:06,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:03:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7144 states. [2021-11-06 12:03:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7144 to 7100. [2021-11-06 12:03:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7100 states, 7092 states have (on average 1.3437676254935138) internal successors, (9530), 7099 states have internal predecessors, (9530), 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) [2021-11-06 12:03:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7100 states to 7100 states and 9530 transitions. [2021-11-06 12:03:07,221 INFO L78 Accepts]: Start accepts. Automaton has 7100 states and 9530 transitions. Word has length 79 [2021-11-06 12:03:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:07,221 INFO L470 AbstractCegarLoop]: Abstraction has 7100 states and 9530 transitions. [2021-11-06 12:03:07,222 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) [2021-11-06 12:03:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7100 states and 9530 transitions. [2021-11-06 12:03:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 12:03:07,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:07,223 INFO L513 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] [2021-11-06 12:03:07,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 12:03:07,224 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)] === [2021-11-06 12:03:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash -786465020, now seen corresponding path program 1 times [2021-11-06 12:03:07,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:07,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414473492] [2021-11-06 12:03:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:07,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:03:07,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:07,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414473492] [2021-11-06 12:03:07,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414473492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:07,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:07,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:03:07,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321856880] [2021-11-06 12:03:07,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:03:07,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:03:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:07,469 INFO L87 Difference]: Start difference. First operand 7100 states and 9530 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) [2021-11-06 12:03:10,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:10,459 INFO L93 Difference]: Finished difference Result 21149 states and 28405 transitions. [2021-11-06 12:03:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:10,460 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 [2021-11-06 12:03:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:10,481 INFO L225 Difference]: With dead ends: 21149 [2021-11-06 12:03:10,481 INFO L226 Difference]: Without dead ends: 16999 [2021-11-06 12:03:10,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16999 states. [2021-11-06 12:03:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 15679. [2021-11-06 12:03:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15679 states, 15671 states have (on average 1.3507753174653818) internal successors, (21168), 15678 states have internal predecessors, (21168), 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) [2021-11-06 12:03:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15679 states to 15679 states and 21168 transitions. [2021-11-06 12:03:11,942 INFO L78 Accepts]: Start accepts. Automaton has 15679 states and 21168 transitions. Word has length 81 [2021-11-06 12:03:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:11,943 INFO L470 AbstractCegarLoop]: Abstraction has 15679 states and 21168 transitions. [2021-11-06 12:03:11,943 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) [2021-11-06 12:03:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15679 states and 21168 transitions. [2021-11-06 12:03:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 12:03:11,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:11,945 INFO L513 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] [2021-11-06 12:03:11,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 12:03:11,945 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)] === [2021-11-06 12:03:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2028113370, now seen corresponding path program 1 times [2021-11-06 12:03:11,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:11,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436488318] [2021-11-06 12:03:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:11,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:03:12,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:12,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436488318] [2021-11-06 12:03:12,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436488318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:12,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:12,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 12:03:12,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386197798] [2021-11-06 12:03:12,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:03:12,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:03:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:03:12,033 INFO L87 Difference]: Start difference. First operand 15679 states and 21168 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) [2021-11-06 12:03:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:16,353 INFO L93 Difference]: Finished difference Result 58864 states and 79629 transitions. [2021-11-06 12:03:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 12:03:16,354 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 [2021-11-06 12:03:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:16,412 INFO L225 Difference]: With dead ends: 58864 [2021-11-06 12:03:16,412 INFO L226 Difference]: Without dead ends: 44178 [2021-11-06 12:03:16,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:03:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44178 states. [2021-11-06 12:03:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44178 to 15695. [2021-11-06 12:03:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15695 states, 15687 states have (on average 1.3499075667750366) internal successors, (21176), 15694 states have internal predecessors, (21176), 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) [2021-11-06 12:03:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15695 states to 15695 states and 21176 transitions. [2021-11-06 12:03:18,118 INFO L78 Accepts]: Start accepts. Automaton has 15695 states and 21176 transitions. Word has length 87 [2021-11-06 12:03:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:18,118 INFO L470 AbstractCegarLoop]: Abstraction has 15695 states and 21176 transitions. [2021-11-06 12:03:18,118 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) [2021-11-06 12:03:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 15695 states and 21176 transitions. [2021-11-06 12:03:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 12:03:18,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:18,120 INFO L513 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] [2021-11-06 12:03:18,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 12:03:18,120 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)] === [2021-11-06 12:03:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2005481116, now seen corresponding path program 1 times [2021-11-06 12:03:18,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:18,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145138178] [2021-11-06 12:03:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:18,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:03:18,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:18,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145138178] [2021-11-06 12:03:18,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145138178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:18,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:18,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 12:03:18,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707960842] [2021-11-06 12:03:18,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:03:18,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:03:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:03:18,230 INFO L87 Difference]: Start difference. First operand 15695 states and 21176 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) [2021-11-06 12:03:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:22,809 INFO L93 Difference]: Finished difference Result 58052 states and 78601 transitions. [2021-11-06 12:03:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 12:03:22,810 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 [2021-11-06 12:03:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:22,883 INFO L225 Difference]: With dead ends: 58052 [2021-11-06 12:03:22,883 INFO L226 Difference]: Without dead ends: 43390 [2021-11-06 12:03:22,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:03:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43390 states. [2021-11-06 12:03:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43390 to 15711. [2021-11-06 12:03:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15711 states, 15703 states have (on average 1.3490415844106223) internal successors, (21184), 15710 states have internal predecessors, (21184), 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) [2021-11-06 12:03:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 21184 transitions. [2021-11-06 12:03:24,817 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 21184 transitions. Word has length 87 [2021-11-06 12:03:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:24,818 INFO L470 AbstractCegarLoop]: Abstraction has 15711 states and 21184 transitions. [2021-11-06 12:03:24,818 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) [2021-11-06 12:03:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 21184 transitions. [2021-11-06 12:03:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 12:03:24,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:24,834 INFO L513 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] [2021-11-06 12:03:24,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 12:03:24,834 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)] === [2021-11-06 12:03:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1582779290, now seen corresponding path program 1 times [2021-11-06 12:03:24,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:24,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134599975] [2021-11-06 12:03:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:24,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:03:24,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:24,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134599975] [2021-11-06 12:03:24,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134599975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:24,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:24,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 12:03:24,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119417490] [2021-11-06 12:03:24,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:03:24,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:03:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:03:24,958 INFO L87 Difference]: Start difference. First operand 15711 states and 21184 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) [2021-11-06 12:03:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:26,623 INFO L93 Difference]: Finished difference Result 30401 states and 41058 transitions. [2021-11-06 12:03:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:03:26,623 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 [2021-11-06 12:03:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:26,649 INFO L225 Difference]: With dead ends: 30401 [2021-11-06 12:03:26,650 INFO L226 Difference]: Without dead ends: 15759 [2021-11-06 12:03:26,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:03:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2021-11-06 12:03:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 15759. [2021-11-06 12:03:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15759 states, 15751 states have (on average 1.347977906164688) internal successors, (21232), 15758 states have internal predecessors, (21232), 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) [2021-11-06 12:03:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15759 states to 15759 states and 21232 transitions. [2021-11-06 12:03:28,304 INFO L78 Accepts]: Start accepts. Automaton has 15759 states and 21232 transitions. Word has length 87 [2021-11-06 12:03:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:28,305 INFO L470 AbstractCegarLoop]: Abstraction has 15759 states and 21232 transitions. [2021-11-06 12:03:28,305 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) [2021-11-06 12:03:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 15759 states and 21232 transitions. [2021-11-06 12:03:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 12:03:28,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:28,307 INFO L513 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] [2021-11-06 12:03:28,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 12:03:28,307 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:03:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1253786181, now seen corresponding path program 1 times [2021-11-06 12:03:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:28,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113013787] [2021-11-06 12:03:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:28,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:03:28,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113013787] [2021-11-06 12:03:28,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113013787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:03:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109737215] [2021-11-06 12:03:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:28,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:03:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:03:28,428 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) [2021-11-06 12:03:28,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 12:03:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:28,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 12:03:28,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:03:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 12:03:29,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109737215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:29,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 12:03:29,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 12:03:29,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595637718] [2021-11-06 12:03:29,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:03:29,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:03:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:03:29,067 INFO L87 Difference]: Start difference. First operand 15759 states and 21232 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) [2021-11-06 12:03:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:31,880 INFO L93 Difference]: Finished difference Result 26585 states and 36097 transitions. [2021-11-06 12:03:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:31,881 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 88 [2021-11-06 12:03:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:31,912 INFO L225 Difference]: With dead ends: 26585 [2021-11-06 12:03:31,913 INFO L226 Difference]: Without dead ends: 26576 [2021-11-06 12:03:31,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:03:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26576 states. [2021-11-06 12:03:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26576 to 15775. [2021-11-06 12:03:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15767 states have (on average 1.3466100082450687) internal successors, (21232), 15774 states have internal predecessors, (21232), 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) [2021-11-06 12:03:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 21232 transitions. [2021-11-06 12:03:33,654 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 21232 transitions. Word has length 88 [2021-11-06 12:03:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:33,655 INFO L470 AbstractCegarLoop]: Abstraction has 15775 states and 21232 transitions. [2021-11-06 12:03:33,655 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) [2021-11-06 12:03:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 21232 transitions. [2021-11-06 12:03:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 12:03:33,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:33,657 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 12:03:33,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 12:03:33,875 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,SelfDestructingSolverStorable27 [2021-11-06 12:03:33,876 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)] === [2021-11-06 12:03:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 936241167, now seen corresponding path program 1 times [2021-11-06 12:03:33,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:33,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710353709] [2021-11-06 12:03:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:33,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 12:03:33,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:33,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710353709] [2021-11-06 12:03:33,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710353709] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:03:33,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882252885] [2021-11-06 12:03:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:33,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:03:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:03:33,958 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) [2021-11-06 12:03:33,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 12:03:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:34,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 12:03:34,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:03:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 12:03:34,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882252885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:34,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 12:03:34,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 12:03:34,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007305088] [2021-11-06 12:03:34,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:03:34,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:34,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:03:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:03:34,628 INFO L87 Difference]: Start difference. First operand 15775 states and 21232 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-11-06 12:03:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:36,541 INFO L93 Difference]: Finished difference Result 29161 states and 39193 transitions. [2021-11-06 12:03:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 93 [2021-11-06 12:03:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:36,561 INFO L225 Difference]: With dead ends: 29161 [2021-11-06 12:03:36,562 INFO L226 Difference]: Without dead ends: 15935 [2021-11-06 12:03:36,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:03:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15935 states. [2021-11-06 12:03:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15935 to 15775. [2021-11-06 12:03:38,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15767 states have (on average 1.344136487600685) internal successors, (21193), 15774 states have internal predecessors, (21193), 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) [2021-11-06 12:03:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 21193 transitions. [2021-11-06 12:03:38,340 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 21193 transitions. Word has length 93 [2021-11-06 12:03:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:38,340 INFO L470 AbstractCegarLoop]: Abstraction has 15775 states and 21193 transitions. [2021-11-06 12:03:38,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-11-06 12:03:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 21193 transitions. [2021-11-06 12:03:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 12:03:38,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:38,342 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:03:38,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 12:03:38,561 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,SelfDestructingSolverStorable28 [2021-11-06 12:03:38,561 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)] === [2021-11-06 12:03:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash 811530367, now seen corresponding path program 1 times [2021-11-06 12:03:38,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:38,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223530280] [2021-11-06 12:03:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:38,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 12:03:38,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:38,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223530280] [2021-11-06 12:03:38,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223530280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:38,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:38,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 12:03:38,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390117276] [2021-11-06 12:03:38,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:03:38,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:03:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:38,654 INFO L87 Difference]: Start difference. First operand 15775 states and 21193 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-06 12:03:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:42,388 INFO L93 Difference]: Finished difference Result 31486 states and 42296 transitions. [2021-11-06 12:03:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:42,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 93 [2021-11-06 12:03:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:42,411 INFO L225 Difference]: With dead ends: 31486 [2021-11-06 12:03:42,411 INFO L226 Difference]: Without dead ends: 15814 [2021-11-06 12:03:42,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:03:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15814 states. [2021-11-06 12:03:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15814 to 15775. [2021-11-06 12:03:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15767 states have (on average 1.3437559459630875) internal successors, (21187), 15774 states have internal predecessors, (21187), 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) [2021-11-06 12:03:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 21187 transitions. [2021-11-06 12:03:44,167 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 21187 transitions. Word has length 93 [2021-11-06 12:03:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:44,167 INFO L470 AbstractCegarLoop]: Abstraction has 15775 states and 21187 transitions. [2021-11-06 12:03:44,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-06 12:03:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 21187 transitions. [2021-11-06 12:03:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 12:03:44,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:44,170 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:03:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 12:03:44,171 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)] === [2021-11-06 12:03:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash 260421006, now seen corresponding path program 1 times [2021-11-06 12:03:44,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:44,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887694516] [2021-11-06 12:03:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 12:03:44,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:44,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887694516] [2021-11-06 12:03:44,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887694516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:44,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:44,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 12:03:44,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870404280] [2021-11-06 12:03:44,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:03:44,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:44,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:03:44,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:03:44,254 INFO L87 Difference]: Start difference. First operand 15775 states and 21187 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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) [2021-11-06 12:03:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:49,825 INFO L93 Difference]: Finished difference Result 31509 states and 42321 transitions. [2021-11-06 12:03:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 12:03:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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 98 [2021-11-06 12:03:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:49,843 INFO L225 Difference]: With dead ends: 31509 [2021-11-06 12:03:49,843 INFO L226 Difference]: Without dead ends: 15834 [2021-11-06 12:03:49,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:03:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15834 states. [2021-11-06 12:03:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15834 to 15784. [2021-11-06 12:03:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15784 states, 15776 states have (on average 1.3435598377281948) internal successors, (21196), 15783 states have internal predecessors, (21196), 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) [2021-11-06 12:03:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15784 states to 15784 states and 21196 transitions. [2021-11-06 12:03:51,514 INFO L78 Accepts]: Start accepts. Automaton has 15784 states and 21196 transitions. Word has length 98 [2021-11-06 12:03:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:51,514 INFO L470 AbstractCegarLoop]: Abstraction has 15784 states and 21196 transitions. [2021-11-06 12:03:51,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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) [2021-11-06 12:03:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15784 states and 21196 transitions. [2021-11-06 12:03:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 12:03:51,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:51,521 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:03:51,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 12:03:51,522 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:03:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash 574331311, now seen corresponding path program 1 times [2021-11-06 12:03:51,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:51,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412160150] [2021-11-06 12:03:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:51,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:51,550 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 12:03:51,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655457048] [2021-11-06 12:03:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:51,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:03:51,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:03:51,566 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) [2021-11-06 12:03:51,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 12:03:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 12:03:52,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:03:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 12:03:52,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:52,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412160150] [2021-11-06 12:03:52,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 12:03:52,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655457048] [2021-11-06 12:03:52,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655457048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 12:03:52,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:03:52,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 12:03:52,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260586285] [2021-11-06 12:03:52,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:03:52,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:03:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:03:52,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:52,266 INFO L87 Difference]: Start difference. First operand 15784 states and 21196 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-11-06 12:03:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:03:55,297 INFO L93 Difference]: Finished difference Result 42885 states and 57841 transitions. [2021-11-06 12:03:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:03:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 103 [2021-11-06 12:03:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:03:55,342 INFO L225 Difference]: With dead ends: 42885 [2021-11-06 12:03:55,342 INFO L226 Difference]: Without dead ends: 27210 [2021-11-06 12:03:55,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:03:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27210 states. [2021-11-06 12:03:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27210 to 21368. [2021-11-06 12:03:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21368 states, 21360 states have (on average 1.3507958801498128) internal successors, (28853), 21367 states have internal predecessors, (28853), 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) [2021-11-06 12:03:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21368 states to 21368 states and 28853 transitions. [2021-11-06 12:03:57,795 INFO L78 Accepts]: Start accepts. Automaton has 21368 states and 28853 transitions. Word has length 103 [2021-11-06 12:03:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:03:57,796 INFO L470 AbstractCegarLoop]: Abstraction has 21368 states and 28853 transitions. [2021-11-06 12:03:57,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-11-06 12:03:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 21368 states and 28853 transitions. [2021-11-06 12:03:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 12:03:57,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:03:57,798 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:03:57,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-06 12:03:58,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:03:58,006 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)] === [2021-11-06 12:03:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:03:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1259932422, now seen corresponding path program 1 times [2021-11-06 12:03:58,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 12:03:58,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571410926] [2021-11-06 12:03:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:58,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 12:03:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 12:03:58,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 12:03:58,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571410926] [2021-11-06 12:03:58,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571410926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:03:58,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809721749] [2021-11-06 12:03:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:03:58,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:03:58,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:03:58,486 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) [2021-11-06 12:03:58,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 12:03:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:03:59,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-06 12:03:59,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:03:59,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,434 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 [2021-11-06 12:03:59,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,455 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 [2021-11-06 12:03:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,524 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 [2021-11-06 12:03:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,563 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 [2021-11-06 12:03:59,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,769 INFO L354 Elim1Store]: treesize reduction 590, result has 21.0 percent of original size [2021-11-06 12:03:59,769 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 184 treesize of output 298 [2021-11-06 12:03:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,882 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 60 treesize of output 36 [2021-11-06 12:03:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,898 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 60 treesize of output 36 [2021-11-06 12:03:59,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,945 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 72 treesize of output 38 [2021-11-06 12:03:59,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:03:59,952 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-06 12:03:59,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 29 [2021-11-06 12:04:00,008 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 41 treesize of output 35 [2021-11-06 12:04:00,011 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 35 treesize of output 29 [2021-11-06 12:04:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:00,040 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-11-06 12:04:00,040 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 29 treesize of output 41 [2021-11-06 12:04:00,377 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 [2021-11-06 12:04:00,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:00,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:00,384 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 0 case distinctions, treesize of input 45 treesize of output 26 [2021-11-06 12:04:00,512 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-06 12:04:00,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-06 12:04:00,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:00,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:00,519 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 0 case distinctions, treesize of input 45 treesize of output 26 [2021-11-06 12:04:00,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:00,940 INFO L354 Elim1Store]: treesize reduction 294, result has 23.6 percent of original size [2021-11-06 12:04:00,940 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 4 case distinctions, treesize of input 98 treesize of output 143 [2021-11-06 12:04:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:01,018 INFO L354 Elim1Store]: treesize reduction 148, result has 30.2 percent of original size [2021-11-06 12:04:01,019 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 3 case distinctions, treesize of input 122 treesize of output 151 [2021-11-06 12:04:01,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:01,063 INFO L354 Elim1Store]: treesize reduction 54, result has 40.7 percent of original size [2021-11-06 12:04:01,063 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 142 treesize of output 149 [2021-11-06 12:04:01,307 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 [2021-11-06 12:04:01,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:01,440 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 12:04:01,440 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 [2021-11-06 12:04:01,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:01,706 INFO L354 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2021-11-06 12:04:01,707 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 [2021-11-06 12:04:03,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:03,330 INFO L354 Elim1Store]: treesize reduction 92, result has 24.0 percent of original size [2021-11-06 12:04:03,330 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 [2021-11-06 12:04:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:04,135 INFO L354 Elim1Store]: treesize reduction 480, result has 22.2 percent of original size [2021-11-06 12:04:04,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 204 [2021-11-06 12:04:04,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:04:04,641 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 [2021-11-06 12:04:04,810 INFO L354 Elim1Store]: treesize reduction 132, result has 16.5 percent of original size [2021-11-06 12:04:04,811 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 [2021-11-06 12:04:07,260 INFO L354 Elim1Store]: treesize reduction 58, result has 33.3 percent of original size [2021-11-06 12:04:07,260 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 [2021-11-06 12:04:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:04:07,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809721749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 12:04:07,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 12:04:07,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 36 [2021-11-06 12:04:07,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130964642] [2021-11-06 12:04:07,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-06 12:04:07,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 12:04:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-06 12:04:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1157, Unknown=1, NotChecked=0, Total=1332 [2021-11-06 12:04:07,290 INFO L87 Difference]: Start difference. First operand 21368 states and 28853 transitions. Second operand has 37 states, 37 states have (on average 4.837837837837838) internal successors, (179), 36 states have internal predecessors, (179), 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) [2021-11-06 12:13:34,513 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-06 12:13:34,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-06 12:13:34,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 12:13:34,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 12:13:34,715 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-11-06 12:13:34,718 INFO L168 Benchmark]: Toolchain (without parser) took 699662.01 ms. Allocated memory was 111.1 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 84.2 MB in the beginning and 3.7 GB in the end (delta: -3.6 GB). Peak memory consumption was 353.6 MB. Max. memory is 16.1 GB. [2021-11-06 12:13:34,718 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 12:13:34,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 959.25 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 56.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-11-06 12:13:34,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.51 ms. Allocated memory is still 111.1 MB. Free memory was 56.2 MB in the beginning and 38.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-06 12:13:34,719 INFO L168 Benchmark]: Boogie Preprocessor took 161.71 ms. Allocated memory is still 111.1 MB. Free memory was 38.5 MB in the beginning and 51.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-06 12:13:34,720 INFO L168 Benchmark]: RCFGBuilder took 2941.96 ms. Allocated memory was 111.1 MB in the beginning and 209.7 MB in the end (delta: 98.6 MB). Free memory was 51.4 MB in the beginning and 70.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 16.1 GB. [2021-11-06 12:13:34,720 INFO L168 Benchmark]: TraceAbstraction took 695448.98 ms. Allocated memory was 209.7 MB in the beginning and 4.1 GB in the end (delta: 3.9 GB). Free memory was 70.0 MB in the beginning and 3.7 GB in the end (delta: -3.6 GB). Peak memory consumption was 237.8 MB. Max. memory is 16.1 GB. [2021-11-06 12:13:34,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 959.25 ms. Allocated memory is still 111.1 MB. Free memory was 84.1 MB in the beginning and 56.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 144.51 ms. Allocated memory is still 111.1 MB. Free memory was 56.2 MB in the beginning and 38.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 161.71 ms. Allocated memory is still 111.1 MB. Free memory was 38.5 MB in the beginning and 51.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2941.96 ms. Allocated memory was 111.1 MB in the beginning and 209.7 MB in the end (delta: 98.6 MB). Free memory was 51.4 MB in the beginning and 70.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 695448.98 ms. Allocated memory was 209.7 MB in the beginning and 4.1 GB in the end (delta: 3.9 GB). Free memory was 70.0 MB in the beginning and 3.7 GB in the end (delta: -3.6 GB). Peak memory consumption was 237.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_Bitvector.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-dev-173e394 [2021-11-06 12:13:36,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 12:13:36,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 12:13:36,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 12:13:36,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 12:13:36,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 12:13:36,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 12:13:36,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 12:13:36,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 12:13:36,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 12:13:36,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 12:13:36,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 12:13:36,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 12:13:36,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 12:13:36,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 12:13:36,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 12:13:36,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 12:13:36,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 12:13:36,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 12:13:36,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 12:13:36,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 12:13:36,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 12:13:36,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 12:13:36,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 12:13:36,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 12:13:36,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 12:13:36,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 12:13:36,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 12:13:36,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 12:13:36,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 12:13:36,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 12:13:36,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 12:13:36,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 12:13:36,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 12:13:36,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 12:13:36,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 12:13:36,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 12:13:36,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 12:13:36,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 12:13:36,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 12:13:36,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 12:13:36,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-06 12:13:36,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 12:13:36,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 12:13:36,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 12:13:36,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 12:13:36,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 12:13:36,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 12:13:36,741 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 12:13:36,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 12:13:36,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 12:13:36,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 12:13:36,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 12:13:36,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 12:13:36,742 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 12:13:36,742 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 12:13:36,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 12:13:36,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 12:13:36,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 12:13:36,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 12:13:36,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 12:13:36,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 12:13:36,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:13:36,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 12:13:36,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 12:13:36,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 12:13:36,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 12:13:36,745 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-11-06 12:13:36,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 12:13:37,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 12:13:37,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 12:13:37,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 12:13:37,016 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 12:13:37,016 INFO L432 ainManager$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 [2021-11-06 12:13:37,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e23d500/65181c914d594f298c0bb141d219e828/FLAG34b3945d7 [2021-11-06 12:13:37,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 12:13:37,622 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 [2021-11-06 12:13:37,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e23d500/65181c914d594f298c0bb141d219e828/FLAG34b3945d7 [2021-11-06 12:13:37,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78e23d500/65181c914d594f298c0bb141d219e828 [2021-11-06 12:13:37,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 12:13:37,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 12:13:37,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 12:13:37,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 12:13:37,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 12:13:37,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:13:37" (1/1) ... [2021-11-06 12:13:37,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11720eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:37, skipping insertion in model container [2021-11-06 12:13:37,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:13:37" (1/1) ... [2021-11-06 12:13:37,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 12:13:37,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 12:13:38,612 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] [2021-11-06 12:13:38,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:13:38,682 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 12:13:38,856 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] [2021-11-06 12:13:38,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 12:13:38,928 INFO L208 MainTranslator]: Completed translation [2021-11-06 12:13:38,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38 WrapperNode [2021-11-06 12:13:38,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 12:13:38,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 12:13:38,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 12:13:38,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 12:13:38,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:38,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 12:13:39,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 12:13:39,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 12:13:39,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 12:13:39,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 12:13:39,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 12:13:39,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 12:13:39,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 12:13:39,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (1/1) ... [2021-11-06 12:13:39,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 12:13:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 12:13:39,353 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) [2021-11-06 12:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 12:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-06 12:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-06 12:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 12:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-06 12:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 12:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-06 12:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-06 12:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-06 12:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-06 12:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-06 12:13:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-06 12:13:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 12:13:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 12:13:39,355 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 [2021-11-06 12:13:39,796 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:39,804 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:39,806 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:39,812 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:39,815 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:39,815 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:39,826 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##254: assume false; [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##255: assume !false; [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume !false; [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume false; [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##447: assume !false; [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##446: assume false; [2021-11-06 12:13:50,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume !false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##115: assume false; [2021-11-06 12:13:50,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##116: assume !false; [2021-11-06 12:13:50,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 12:13:50,136 INFO L299 CfgBuilder]: Removed 509 assume(true) statements. [2021-11-06 12:13:50,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:13:50 BoogieIcfgContainer [2021-11-06 12:13:50,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 12:13:50,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 12:13:50,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 12:13:50,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 12:13:50,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:13:37" (1/3) ... [2021-11-06 12:13:50,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee4bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:13:50, skipping insertion in model container [2021-11-06 12:13:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:13:38" (2/3) ... [2021-11-06 12:13:50,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee4bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:13:50, skipping insertion in model container [2021-11-06 12:13:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:13:50" (3/3) ... [2021-11-06 12:13:50,169 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-11-06 12:13:50,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 12:13:50,172 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 12:13:50,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 12:13:50,229 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 [2021-11-06 12:13:50,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 12:13:50,271 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) [2021-11-06 12:13:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 12:13:50,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:13:50,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:13:50,276 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)] === [2021-11-06 12:13:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:13:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1571270776, now seen corresponding path program 1 times [2021-11-06 12:13:50,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:13:50,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943595162] [2021-11-06 12:13:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:13:50,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:13:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:13:50,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:13:50,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-06 12:13:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:13:51,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 12:13:51,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:13:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:51,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:13:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:51,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:13:51,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943595162] [2021-11-06 12:13:51,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943595162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:13:51,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:13:51,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 12:13:51,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826764074] [2021-11-06 12:13:51,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:13:51,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:13:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:13:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:13:51,292 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) [2021-11-06 12:13:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:13:51,463 INFO L93 Difference]: Finished difference Result 1612 states and 2395 transitions. [2021-11-06 12:13:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:13:51,464 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 [2021-11-06 12:13:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:13:51,483 INFO L225 Difference]: With dead ends: 1612 [2021-11-06 12:13:51,483 INFO L226 Difference]: Without dead ends: 1041 [2021-11-06 12:13:51,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:13:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-06 12:13:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1029. [2021-11-06 12:13:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1021 states have (on average 1.3300685602350637) internal successors, (1358), 1028 states have internal predecessors, (1358), 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) [2021-11-06 12:13:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1358 transitions. [2021-11-06 12:13:51,634 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1358 transitions. Word has length 9 [2021-11-06 12:13:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:13:51,635 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1358 transitions. [2021-11-06 12:13:51,636 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) [2021-11-06 12:13:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1358 transitions. [2021-11-06 12:13:51,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 12:13:51,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:13:51,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 12:13:51,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-06 12:13:51,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:13:51,858 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)] === [2021-11-06 12:13:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:13:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1464753323, now seen corresponding path program 1 times [2021-11-06 12:13:51,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:13:51,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508776413] [2021-11-06 12:13:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:13:51,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:13:51,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:13:51,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:13:51,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-06 12:13:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:13:52,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 12:13:52,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:13:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:52,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:13:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:52,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:13:52,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508776413] [2021-11-06 12:13:52,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508776413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:13:52,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:13:52,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 12:13:52,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768875861] [2021-11-06 12:13:52,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 12:13:52,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:13:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 12:13:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:13:52,631 INFO L87 Difference]: Start difference. First operand 1029 states and 1358 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) [2021-11-06 12:13:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:13:52,704 INFO L93 Difference]: Finished difference Result 3069 states and 4055 transitions. [2021-11-06 12:13:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 12:13:52,704 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 [2021-11-06 12:13:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:13:52,710 INFO L225 Difference]: With dead ends: 3069 [2021-11-06 12:13:52,710 INFO L226 Difference]: Without dead ends: 2044 [2021-11-06 12:13:52,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 12:13:52,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2021-11-06 12:13:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2024. [2021-11-06 12:13:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2016 states have (on average 1.3293650793650793) internal successors, (2680), 2023 states have internal predecessors, (2680), 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) [2021-11-06 12:13:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2680 transitions. [2021-11-06 12:13:52,754 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2680 transitions. Word has length 10 [2021-11-06 12:13:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:13:52,754 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 2680 transitions. [2021-11-06 12:13:52,754 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) [2021-11-06 12:13:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2680 transitions. [2021-11-06 12:13:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 12:13:52,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:13:52,756 INFO L513 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] [2021-11-06 12:13:52,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-06 12:13:52,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:13:52,972 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)] === [2021-11-06 12:13:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:13:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 843509326, now seen corresponding path program 1 times [2021-11-06 12:13:52,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:13:52,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217287702] [2021-11-06 12:13:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:13:52,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:13:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:13:52,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:13:52,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-06 12:13:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:13:53,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 12:13:53,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:13:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:53,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:13:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:53,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:13:53,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217287702] [2021-11-06 12:13:53,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217287702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:13:53,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:13:53,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 12:13:53,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134800001] [2021-11-06 12:13:53,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:13:53,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:13:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:13:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:13:53,822 INFO L87 Difference]: Start difference. First operand 2024 states and 2680 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-06 12:13:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:13:53,983 INFO L93 Difference]: Finished difference Result 5907 states and 7843 transitions. [2021-11-06 12:13:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:13:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 [2021-11-06 12:13:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:13:53,994 INFO L225 Difference]: With dead ends: 5907 [2021-11-06 12:13:53,994 INFO L226 Difference]: Without dead ends: 3890 [2021-11-06 12:13:53,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:13:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2021-11-06 12:13:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3856. [2021-11-06 12:13:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3848 states have (on average 1.3300415800415801) internal successors, (5118), 3855 states have internal predecessors, (5118), 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) [2021-11-06 12:13:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5118 transitions. [2021-11-06 12:13:54,112 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5118 transitions. Word has length 35 [2021-11-06 12:13:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:13:54,112 INFO L470 AbstractCegarLoop]: Abstraction has 3856 states and 5118 transitions. [2021-11-06 12:13:54,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-06 12:13:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5118 transitions. [2021-11-06 12:13:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 12:13:54,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:13:54,114 INFO L513 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] [2021-11-06 12:13:54,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-06 12:13:54,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:13:54,329 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)] === [2021-11-06 12:13:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:13:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1573275523, now seen corresponding path program 1 times [2021-11-06 12:13:54,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:13:54,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749117130] [2021-11-06 12:13:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:13:54,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:13:54,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:13:54,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:13:54,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-06 12:13:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:13:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 12:13:55,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:13:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:55,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:13:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:13:55,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:13:55,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749117130] [2021-11-06 12:13:55,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749117130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:13:55,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:13:55,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 12:13:55,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018306532] [2021-11-06 12:13:55,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:13:55,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:13:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:13:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:13:55,373 INFO L87 Difference]: Start difference. First operand 3856 states and 5118 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-06 12:13:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:13:55,624 INFO L93 Difference]: Finished difference Result 12319 states and 16585 transitions. [2021-11-06 12:13:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:13:55,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 [2021-11-06 12:13:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:13:55,650 INFO L225 Difference]: With dead ends: 12319 [2021-11-06 12:13:55,650 INFO L226 Difference]: Without dead ends: 8468 [2021-11-06 12:13:55,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:13:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2021-11-06 12:13:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 8422. [2021-11-06 12:13:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8414 states have (on average 1.354171618730687) internal successors, (11394), 8421 states have internal predecessors, (11394), 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) [2021-11-06 12:13:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 11394 transitions. [2021-11-06 12:13:55,895 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 11394 transitions. Word has length 43 [2021-11-06 12:13:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:13:55,896 INFO L470 AbstractCegarLoop]: Abstraction has 8422 states and 11394 transitions. [2021-11-06 12:13:55,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-06 12:13:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 11394 transitions. [2021-11-06 12:13:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 12:13:55,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:13:55,899 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:13:55,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-06 12:13:56,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:13:56,100 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)] === [2021-11-06 12:13:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:13:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1853470451, now seen corresponding path program 1 times [2021-11-06 12:13:56,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:13:56,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543529393] [2021-11-06 12:13:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:13:56,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:13:56,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:13:56,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:13:56,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-06 12:13:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:13:56,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 12:13:56,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:13:57,110 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 15 treesize of output 7 [2021-11-06 12:13:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:13:57,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:13:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:13:57,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:13:57,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543529393] [2021-11-06 12:13:57,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543529393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:13:57,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:13:57,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 12:13:57,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211849842] [2021-11-06 12:13:57,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 12:13:57,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:13:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 12:13:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 12:13:57,516 INFO L87 Difference]: Start difference. First operand 8422 states and 11394 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-06 12:14:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:14:01,038 INFO L93 Difference]: Finished difference Result 23419 states and 31780 transitions. [2021-11-06 12:14:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 12:14:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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 64 [2021-11-06 12:14:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:14:01,084 INFO L225 Difference]: With dead ends: 23419 [2021-11-06 12:14:01,084 INFO L226 Difference]: Without dead ends: 15004 [2021-11-06 12:14:01,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:14:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2021-11-06 12:14:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 14546. [2021-11-06 12:14:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14546 states, 14538 states have (on average 1.3698583023799698) internal successors, (19915), 14545 states have internal predecessors, (19915), 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) [2021-11-06 12:14:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14546 states to 14546 states and 19915 transitions. [2021-11-06 12:14:01,482 INFO L78 Accepts]: Start accepts. Automaton has 14546 states and 19915 transitions. Word has length 64 [2021-11-06 12:14:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:14:01,483 INFO L470 AbstractCegarLoop]: Abstraction has 14546 states and 19915 transitions. [2021-11-06 12:14:01,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-06 12:14:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14546 states and 19915 transitions. [2021-11-06 12:14:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 12:14:01,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:14:01,486 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:14:01,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-06 12:14:01,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:14:01,699 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)] === [2021-11-06 12:14:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:14:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1837951733, now seen corresponding path program 1 times [2021-11-06 12:14:01,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:14:01,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823360497] [2021-11-06 12:14:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:14:01,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:14:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:14:01,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:14:01,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-06 12:14:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:14:02,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 12:14:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:14:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:14:02,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:14:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:14:02,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:14:02,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823360497] [2021-11-06 12:14:02,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823360497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:14:02,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:14:02,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 12:14:02,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262014910] [2021-11-06 12:14:02,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:14:02,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:14:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:14:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:14:02,842 INFO L87 Difference]: Start difference. First operand 14546 states and 19915 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-11-06 12:14:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:14:07,391 INFO L93 Difference]: Finished difference Result 29155 states and 39909 transitions. [2021-11-06 12:14:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 12:14:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2021-11-06 12:14:07,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:14:07,414 INFO L225 Difference]: With dead ends: 29155 [2021-11-06 12:14:07,415 INFO L226 Difference]: Without dead ends: 14586 [2021-11-06 12:14:07,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:14:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14586 states. [2021-11-06 12:14:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14586 to 14489. [2021-11-06 12:14:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14489 states, 14481 states have (on average 1.3704854637110697) internal successors, (19846), 14488 states have internal predecessors, (19846), 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) [2021-11-06 12:14:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14489 states to 14489 states and 19846 transitions. [2021-11-06 12:14:07,770 INFO L78 Accepts]: Start accepts. Automaton has 14489 states and 19846 transitions. Word has length 64 [2021-11-06 12:14:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:14:07,770 INFO L470 AbstractCegarLoop]: Abstraction has 14489 states and 19846 transitions. [2021-11-06 12:14:07,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-11-06 12:14:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 14489 states and 19846 transitions. [2021-11-06 12:14:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 12:14:07,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:14:07,784 INFO L513 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] [2021-11-06 12:14:07,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-06 12:14:07,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:14:07,998 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)] === [2021-11-06 12:14:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:14:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash -133909066, now seen corresponding path program 1 times [2021-11-06 12:14:07,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:14:07,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667118145] [2021-11-06 12:14:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:14:07,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:14:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:14:08,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:14:08,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-06 12:14:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:14:08,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 12:14:08,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:14:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:08,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:14:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:09,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:14:09,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667118145] [2021-11-06 12:14:09,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667118145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:14:09,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:14:09,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-06 12:14:09,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477347005] [2021-11-06 12:14:09,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 12:14:09,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:14:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 12:14:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 12:14:09,054 INFO L87 Difference]: Start difference. First operand 14489 states and 19846 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-06 12:14:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:14:13,632 INFO L93 Difference]: Finished difference Result 25111 states and 34263 transitions. [2021-11-06 12:14:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 12:14:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 [2021-11-06 12:14:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:14:13,650 INFO L225 Difference]: With dead ends: 25111 [2021-11-06 12:14:13,650 INFO L226 Difference]: Without dead ends: 10593 [2021-11-06 12:14:13,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-06 12:14:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2021-11-06 12:14:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 10160. [2021-11-06 12:14:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10160 states, 10152 states have (on average 1.3646572104018913) internal successors, (13854), 10159 states have internal predecessors, (13854), 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) [2021-11-06 12:14:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10160 states to 10160 states and 13854 transitions. [2021-11-06 12:14:13,919 INFO L78 Accepts]: Start accepts. Automaton has 10160 states and 13854 transitions. Word has length 65 [2021-11-06 12:14:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:14:13,920 INFO L470 AbstractCegarLoop]: Abstraction has 10160 states and 13854 transitions. [2021-11-06 12:14:13,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-06 12:14:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 10160 states and 13854 transitions. [2021-11-06 12:14:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:14:13,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:14:13,926 INFO L513 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] [2021-11-06 12:14:13,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-06 12:14:14,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:14:14,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:14:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:14:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash -612371812, now seen corresponding path program 1 times [2021-11-06 12:14:14,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:14:14,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806762924] [2021-11-06 12:14:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:14:14,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:14:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:14:14,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:14:14,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-06 12:14:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:14:15,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 12:14:15,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:14:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:15,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:14:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:15,567 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:14:15,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806762924] [2021-11-06 12:14:15,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806762924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:14:15,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:14:15,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-06 12:14:15,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042664347] [2021-11-06 12:14:15,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 12:14:15,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:14:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 12:14:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-06 12:14:15,568 INFO L87 Difference]: Start difference. First operand 10160 states and 13854 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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) [2021-11-06 12:14:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:14:20,446 INFO L93 Difference]: Finished difference Result 66204 states and 90648 transitions. [2021-11-06 12:14:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 12:14:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 [2021-11-06 12:14:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:14:20,544 INFO L225 Difference]: With dead ends: 66204 [2021-11-06 12:14:20,544 INFO L226 Difference]: Without dead ends: 57904 [2021-11-06 12:14:20,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-06 12:14:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57904 states. [2021-11-06 12:14:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57904 to 10175. [2021-11-06 12:14:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10175 states, 10167 states have (on average 1.3638241369135438) internal successors, (13866), 10174 states have internal predecessors, (13866), 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) [2021-11-06 12:14:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10175 states to 10175 states and 13866 transitions. [2021-11-06 12:14:21,400 INFO L78 Accepts]: Start accepts. Automaton has 10175 states and 13866 transitions. Word has length 68 [2021-11-06 12:14:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:14:21,408 INFO L470 AbstractCegarLoop]: Abstraction has 10175 states and 13866 transitions. [2021-11-06 12:14:21,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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) [2021-11-06 12:14:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 10175 states and 13866 transitions. [2021-11-06 12:14:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:14:21,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:14:21,414 INFO L513 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] [2021-11-06 12:14:21,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-06 12:14:21,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:14:21,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:14:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:14:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash -965460194, now seen corresponding path program 1 times [2021-11-06 12:14:21,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:14:21,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750202701] [2021-11-06 12:14:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:14:21,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:14:21,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:14:21,618 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:14:21,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-06 12:14:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:14:22,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-06 12:14:22,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:14:22,718 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 13 treesize of output 9 [2021-11-06 12:14:22,729 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 13 treesize of output 9 [2021-11-06 12:14:22,875 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 37 treesize of output 25 [2021-11-06 12:14:22,880 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 22 treesize of output 10 [2021-11-06 12:14:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:22,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:14:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:23,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:14:23,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750202701] [2021-11-06 12:14:23,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750202701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:14:23,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:14:23,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-06 12:14:23,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439012330] [2021-11-06 12:14:23,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 12:14:23,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:14:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 12:14:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 12:14:23,295 INFO L87 Difference]: Start difference. First operand 10175 states and 13866 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 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) [2021-11-06 12:14:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:14:49,600 INFO L93 Difference]: Finished difference Result 29873 states and 40712 transitions. [2021-11-06 12:14:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 12:14:49,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 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 68 [2021-11-06 12:14:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:14:49,654 INFO L225 Difference]: With dead ends: 29873 [2021-11-06 12:14:49,655 INFO L226 Difference]: Without dead ends: 29786 [2021-11-06 12:14:49,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-06 12:14:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29786 states. [2021-11-06 12:14:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29786 to 10217. [2021-11-06 12:14:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 10209 states have (on average 1.3617396414928005) internal successors, (13902), 10216 states have internal predecessors, (13902), 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) [2021-11-06 12:14:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 13902 transitions. [2021-11-06 12:14:50,451 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 13902 transitions. Word has length 68 [2021-11-06 12:14:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:14:50,452 INFO L470 AbstractCegarLoop]: Abstraction has 10217 states and 13902 transitions. [2021-11-06 12:14:50,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 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) [2021-11-06 12:14:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 13902 transitions. [2021-11-06 12:14:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:14:50,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:14:50,454 INFO L513 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] [2021-11-06 12:14:50,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-06 12:14:50,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:14:50,678 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:14:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:14:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1976577444, now seen corresponding path program 1 times [2021-11-06 12:14:50,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:14:50,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312404250] [2021-11-06 12:14:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:14:50,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:14:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:14:50,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:14:50,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-06 12:14:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:14:51,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 12:14:51,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:14:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:51,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:14:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:51,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:14:51,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312404250] [2021-11-06 12:14:51,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312404250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:14:51,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:14:51,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-06 12:14:51,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544890439] [2021-11-06 12:14:51,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:14:51,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:14:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:14:52,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:14:52,000 INFO L87 Difference]: Start difference. First operand 10217 states and 13902 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) [2021-11-06 12:14:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:14:55,641 INFO L93 Difference]: Finished difference Result 62809 states and 85562 transitions. [2021-11-06 12:14:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 12:14:55,641 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 [2021-11-06 12:14:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:14:55,729 INFO L225 Difference]: With dead ends: 62809 [2021-11-06 12:14:55,729 INFO L226 Difference]: Without dead ends: 57637 [2021-11-06 12:14:55,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 12:14:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57637 states. [2021-11-06 12:14:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57637 to 10301. [2021-11-06 12:14:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10301 states, 10293 states have (on average 1.3587875255027688) internal successors, (13986), 10300 states have internal predecessors, (13986), 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) [2021-11-06 12:14:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10301 states to 10301 states and 13986 transitions. [2021-11-06 12:14:56,875 INFO L78 Accepts]: Start accepts. Automaton has 10301 states and 13986 transitions. Word has length 68 [2021-11-06 12:14:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:14:56,876 INFO L470 AbstractCegarLoop]: Abstraction has 10301 states and 13986 transitions. [2021-11-06 12:14:56,876 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) [2021-11-06 12:14:56,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10301 states and 13986 transitions. [2021-11-06 12:14:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 12:14:56,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:14:56,878 INFO L513 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] [2021-11-06 12:14:56,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-06 12:14:57,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:14:57,102 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:14:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:14:57,102 INFO L85 PathProgramCache]: Analyzing trace with hash 730041950, now seen corresponding path program 1 times [2021-11-06 12:14:57,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:14:57,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041591398] [2021-11-06 12:14:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:14:57,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:14:57,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:14:57,106 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:14:57,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-06 12:14:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:14:58,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 12:14:58,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:14:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:58,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:14:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:14:58,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:14:58,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041591398] [2021-11-06 12:14:58,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041591398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:14:58,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:14:58,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-06 12:14:58,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531028076] [2021-11-06 12:14:58,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 12:14:58,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:14:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 12:14:58,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:14:58,470 INFO L87 Difference]: Start difference. First operand 10301 states and 13986 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) [2021-11-06 12:15:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:15:03,488 INFO L93 Difference]: Finished difference Result 64919 states and 88440 transitions. [2021-11-06 12:15:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 12:15:03,489 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 [2021-11-06 12:15:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:15:03,577 INFO L225 Difference]: With dead ends: 64919 [2021-11-06 12:15:03,577 INFO L226 Difference]: Without dead ends: 54625 [2021-11-06 12:15:03,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-06 12:15:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54625 states. [2021-11-06 12:15:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54625 to 10259. [2021-11-06 12:15:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10259 states, 10251 states have (on average 1.3569407862647547) internal successors, (13910), 10258 states have internal predecessors, (13910), 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) [2021-11-06 12:15:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 13910 transitions. [2021-11-06 12:15:04,917 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 13910 transitions. Word has length 68 [2021-11-06 12:15:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:15:04,917 INFO L470 AbstractCegarLoop]: Abstraction has 10259 states and 13910 transitions. [2021-11-06 12:15:04,917 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) [2021-11-06 12:15:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 13910 transitions. [2021-11-06 12:15:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 12:15:04,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:15:04,920 INFO L513 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] [2021-11-06 12:15:04,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-06 12:15:05,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:15:05,127 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:15:05,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:15:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 209926717, now seen corresponding path program 1 times [2021-11-06 12:15:05,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:15:05,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380175409] [2021-11-06 12:15:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:15:05,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:15:05,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:15:05,130 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:15:05,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-06 12:15:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:15:06,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 12:15:06,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:15:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:15:06,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:15:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:15:06,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:15:06,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380175409] [2021-11-06 12:15:06,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380175409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:15:06,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:15:06,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-06 12:15:06,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375489486] [2021-11-06 12:15:06,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:15:06,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:15:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:15:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:15:06,801 INFO L87 Difference]: Start difference. First operand 10259 states and 13910 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2021-11-06 12:15:12,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:15:12,998 INFO L93 Difference]: Finished difference Result 41310 states and 56136 transitions. [2021-11-06 12:15:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 12:15:12,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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 [2021-11-06 12:15:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:15:13,048 INFO L225 Difference]: With dead ends: 41310 [2021-11-06 12:15:13,048 INFO L226 Difference]: Without dead ends: 36075 [2021-11-06 12:15:13,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:15:13,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36075 states. [2021-11-06 12:15:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36075 to 30615. [2021-11-06 12:15:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30615 states, 30607 states have (on average 1.3591988760741007) internal successors, (41601), 30614 states have internal predecessors, (41601), 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) [2021-11-06 12:15:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30615 states to 30615 states and 41601 transitions. [2021-11-06 12:15:16,041 INFO L78 Accepts]: Start accepts. Automaton has 30615 states and 41601 transitions. Word has length 73 [2021-11-06 12:15:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:15:16,042 INFO L470 AbstractCegarLoop]: Abstraction has 30615 states and 41601 transitions. [2021-11-06 12:15:16,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 5 states have internal predecessors, (145), 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) [2021-11-06 12:15:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 30615 states and 41601 transitions. [2021-11-06 12:15:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 12:15:16,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:15:16,044 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:15:16,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-06 12:15:16,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:15:16,246 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)] === [2021-11-06 12:15:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:15:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2145325504, now seen corresponding path program 1 times [2021-11-06 12:15:16,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:15:16,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584390981] [2021-11-06 12:15:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:15:16,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:15:16,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:15:16,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:15:16,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-06 12:15:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:15:17,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 12:15:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:15:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:15:17,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:15:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:15:17,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:15:17,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584390981] [2021-11-06 12:15:17,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584390981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:15:17,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:15:17,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-06 12:15:17,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111836157] [2021-11-06 12:15:17,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 12:15:17,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:15:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 12:15:17,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 12:15:17,673 INFO L87 Difference]: Start difference. First operand 30615 states and 41601 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2021-11-06 12:15:23,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:15:23,319 INFO L93 Difference]: Finished difference Result 88870 states and 120852 transitions. [2021-11-06 12:15:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 12:15:23,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 75 [2021-11-06 12:15:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:15:23,420 INFO L225 Difference]: With dead ends: 88870 [2021-11-06 12:15:23,420 INFO L226 Difference]: Without dead ends: 58250 [2021-11-06 12:15:23,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 12:15:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58250 states. [2021-11-06 12:15:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58250 to 30624. [2021-11-06 12:15:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30624 states, 30616 states have (on average 1.358962633916906) internal successors, (41606), 30623 states have internal predecessors, (41606), 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) [2021-11-06 12:15:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30624 states to 30624 states and 41606 transitions. [2021-11-06 12:15:26,580 INFO L78 Accepts]: Start accepts. Automaton has 30624 states and 41606 transitions. Word has length 75 [2021-11-06 12:15:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:15:26,580 INFO L470 AbstractCegarLoop]: Abstraction has 30624 states and 41606 transitions. [2021-11-06 12:15:26,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2021-11-06 12:15:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 30624 states and 41606 transitions. [2021-11-06 12:15:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 12:15:26,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:15:26,583 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:15:26,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-06 12:15:26,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:15:26,796 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:15:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:15:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2108967042, now seen corresponding path program 1 times [2021-11-06 12:15:26,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:15:26,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953290698] [2021-11-06 12:15:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:15:26,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:15:26,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:15:26,799 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:15:26,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-06 12:15:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:15:27,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 12:15:27,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:15:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:15:28,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:15:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:15:28,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:15:28,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953290698] [2021-11-06 12:15:28,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953290698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:15:28,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:15:28,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-06 12:15:28,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899526344] [2021-11-06 12:15:28,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 12:15:28,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:15:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 12:15:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 12:15:28,296 INFO L87 Difference]: Start difference. First operand 30624 states and 41606 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2021-11-06 12:15:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:15:39,239 INFO L93 Difference]: Finished difference Result 132386 states and 180162 transitions. [2021-11-06 12:15:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 12:15:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 75 [2021-11-06 12:15:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:15:39,452 INFO L225 Difference]: With dead ends: 132386 [2021-11-06 12:15:39,453 INFO L226 Difference]: Without dead ends: 101753 [2021-11-06 12:15:39,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-06 12:15:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101753 states. [2021-11-06 12:15:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101753 to 30636. [2021-11-06 12:15:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30636 states, 30628 states have (on average 1.3586913934961473) internal successors, (41614), 30635 states have internal predecessors, (41614), 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) [2021-11-06 12:15:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30636 states to 30636 states and 41614 transitions. [2021-11-06 12:15:43,524 INFO L78 Accepts]: Start accepts. Automaton has 30636 states and 41614 transitions. Word has length 75 [2021-11-06 12:15:43,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:15:43,524 INFO L470 AbstractCegarLoop]: Abstraction has 30636 states and 41614 transitions. [2021-11-06 12:15:43,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2021-11-06 12:15:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 30636 states and 41614 transitions. [2021-11-06 12:15:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 12:15:43,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:15:43,555 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:15:43,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-06 12:15:43,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:15:43,756 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:15:43,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:15:43,757 INFO L85 PathProgramCache]: Analyzing trace with hash 157414144, now seen corresponding path program 1 times [2021-11-06 12:15:43,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:15:43,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415456679] [2021-11-06 12:15:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:15:43,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:15:43,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:15:43,759 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:15:43,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-06 12:15:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:15:44,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 12:15:44,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:15:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:15:44,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:15:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 12:15:45,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:15:45,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415456679] [2021-11-06 12:15:45,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415456679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:15:45,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:15:45,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-06 12:15:45,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586677698] [2021-11-06 12:15:45,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 12:15:45,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:15:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 12:15:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-06 12:15:45,173 INFO L87 Difference]: Start difference. First operand 30636 states and 41614 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-06 12:15:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 12:15:50,595 INFO L93 Difference]: Finished difference Result 56175 states and 75983 transitions. [2021-11-06 12:15:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 12:15:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 75 [2021-11-06 12:15:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 12:15:50,628 INFO L225 Difference]: With dead ends: 56175 [2021-11-06 12:15:50,629 INFO L226 Difference]: Without dead ends: 25506 [2021-11-06 12:15:50,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-06 12:15:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25506 states. [2021-11-06 12:15:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25506 to 25123. [2021-11-06 12:15:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25123 states, 25115 states have (on average 1.3491140752538324) internal successors, (33883), 25122 states have internal predecessors, (33883), 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) [2021-11-06 12:15:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25123 states to 25123 states and 33883 transitions. [2021-11-06 12:15:53,726 INFO L78 Accepts]: Start accepts. Automaton has 25123 states and 33883 transitions. Word has length 75 [2021-11-06 12:15:53,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 12:15:53,727 INFO L470 AbstractCegarLoop]: Abstraction has 25123 states and 33883 transitions. [2021-11-06 12:15:53,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-06 12:15:53,727 INFO L276 IsEmpty]: Start isEmpty. Operand 25123 states and 33883 transitions. [2021-11-06 12:15:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 12:15:53,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 12:15:53,740 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 12:15:53,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-06 12:15:53,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 12:15:53,962 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 12:15:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 12:15:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash -526132679, now seen corresponding path program 1 times [2021-11-06 12:15:53,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 12:15:53,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841527526] [2021-11-06 12:15:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 12:15:53,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 12:15:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 12:15:53,965 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 12:15:53,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-06 12:15:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:15:55,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-06 12:15:55,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:15:55,606 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 13 treesize of output 9 [2021-11-06 12:15:55,618 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 18 treesize of output 14 [2021-11-06 12:15:55,809 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 38 treesize of output 26 [2021-11-06 12:15:55,813 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 23 treesize of output 11 [2021-11-06 12:15:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:15:55,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 12:15:56,162 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 76 treesize of output 70 [2021-11-06 12:15:56,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:15:56,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 12:15:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 12:15:56,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 12:15:56,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841527526] [2021-11-06 12:15:56,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841527526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 12:15:56,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 12:15:56,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-06 12:15:56,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377218291] [2021-11-06 12:15:56,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 12:15:56,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 12:15:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 12:15:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-06 12:15:56,843 INFO L87 Difference]: Start difference. First operand 25123 states and 33883 transitions. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) Killed by 15