./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.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 d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:16:01,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:16:01,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:16:01,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:16:01,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:16:01,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:16:01,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:16:01,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:16:01,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:16:01,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:16:01,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:16:01,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:16:01,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:16:01,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:16:01,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:16:01,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:16:01,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:16:01,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:16:01,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:16:01,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:16:01,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:16:01,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:16:01,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:16:01,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:16:01,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:16:01,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:16:01,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:16:01,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:16:01,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:16:01,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:16:01,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:16:01,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:16:01,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:16:01,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:16:01,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:16:01,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:16:01,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:16:01,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:16:01,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:16:01,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:16:01,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:16:01,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:16:01,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:16:01,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:16:01,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:16:01,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:16:01,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:16:01,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:16:01,878 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:16:01,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:16:01,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:16:01,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:16:01,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:16:01,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:16:01,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:16:01,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:16:01,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:16:01,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:16:01,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:16:01,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:16:01,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:16:01,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:16:01,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:16:01,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:16:01,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:16:01,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:16:01,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:16:01,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:16:01,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:16:01,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:16:01,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:16:01,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-11-07 13:16:02,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:16:02,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:16:02,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:16:02,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:16:02,063 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:16:02,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-07 13:16:02,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a256cc4/4e6202a7d8d14aebad003766632c2365/FLAGf3c09fdc0 [2021-11-07 13:16:02,796 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:16:02,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-07 13:16:02,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a256cc4/4e6202a7d8d14aebad003766632c2365/FLAGf3c09fdc0 [2021-11-07 13:16:03,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a256cc4/4e6202a7d8d14aebad003766632c2365 [2021-11-07 13:16:03,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:16:03,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:16:03,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:16:03,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:16:03,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:16:03,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:03" (1/1) ... [2021-11-07 13:16:03,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:03, skipping insertion in model container [2021-11-07 13:16:03,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:03" (1/1) ... [2021-11-07 13:16:03,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:16:03,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:16:03,837 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-11-07 13:16:04,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:16:04,613 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:16:04,731 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-11-07 13:16:04,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:16:04,981 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:16:04,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04 WrapperNode [2021-11-07 13:16:04,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:16:04,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:16:04,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:16:04,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:16:04,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:16:05,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:16:05,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:16:05,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:16:05,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:05,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:06,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:16:06,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:16:06,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:16:06,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:16:06,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (1/1) ... [2021-11-07 13:16:06,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:16:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:16:06,097 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) [2021-11-07 13:16:06,148 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 [2021-11-07 13:16:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:16:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:16:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:16:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:16:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:16:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:16:06,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:16:06,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:16:06,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:16:37,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:16:37,081 INFO L299 CfgBuilder]: Removed 2280 assume(true) statements. [2021-11-07 13:16:37,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:37 BoogieIcfgContainer [2021-11-07 13:16:37,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:16:37,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:16:37,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:16:37,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:16:37,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:03" (1/3) ... [2021-11-07 13:16:37,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232083f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:37, skipping insertion in model container [2021-11-07 13:16:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:04" (2/3) ... [2021-11-07 13:16:37,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232083f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:37, skipping insertion in model container [2021-11-07 13:16:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:37" (3/3) ... [2021-11-07 13:16:37,095 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-07 13:16:37,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:16:37,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:16:37,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:16:37,189 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 [2021-11-07 13:16:37,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:16:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 2753 states, 2751 states have (on average 1.490367139222101) internal successors, (4100), 2752 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 13:16:37,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:37,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:37,269 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -883522735, now seen corresponding path program 1 times [2021-11-07 13:16:37,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:37,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754041462] [2021-11-07 13:16:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:37,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:38,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:38,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754041462] [2021-11-07 13:16:38,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754041462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:38,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:38,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:38,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224628849] [2021-11-07 13:16:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:38,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:16:38,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:16:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:16:38,069 INFO L87 Difference]: Start difference. First operand has 2753 states, 2751 states have (on average 1.490367139222101) internal successors, (4100), 2752 states have internal predecessors, (4100), 0 states have call successors, (0), 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 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:40,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:40,497 INFO L93 Difference]: Finished difference Result 8166 states and 12178 transitions. [2021-11-07 13:16:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:16:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-07 13:16:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:40,522 INFO L225 Difference]: With dead ends: 8166 [2021-11-07 13:16:40,522 INFO L226 Difference]: Without dead ends: 5404 [2021-11-07 13:16:40,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:16:40,532 INFO L933 BasicCegarLoop]: 4010 mSDtfsCounter, 3917 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2112.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2263.65ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:40,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3917 Valid, 7996 Invalid, 15 Unknown, 0 Unchecked, 15.82ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2263.65ms Time] [2021-11-07 13:16:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-11-07 13:16:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2021-11-07 13:16:40,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5403 states have (on average 1.4614103275957802) internal successors, (7896), 5403 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 7896 transitions. [2021-11-07 13:16:40,652 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 7896 transitions. Word has length 38 [2021-11-07 13:16:40,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:40,652 INFO L470 AbstractCegarLoop]: Abstraction has 5404 states and 7896 transitions. [2021-11-07 13:16:40,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 7896 transitions. [2021-11-07 13:16:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 13:16:40,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:40,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:40,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:16:40,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 24310010, now seen corresponding path program 1 times [2021-11-07 13:16:40,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:40,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626100561] [2021-11-07 13:16:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:40,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:41,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:41,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626100561] [2021-11-07 13:16:41,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626100561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:41,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:41,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:16:41,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083961979] [2021-11-07 13:16:41,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:41,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:16:41,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:16:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:41,051 INFO L87 Difference]: Start difference. First operand 5404 states and 7896 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:41,496 INFO L93 Difference]: Finished difference Result 16116 states and 23573 transitions. [2021-11-07 13:16:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:41,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-07 13:16:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:41,535 INFO L225 Difference]: With dead ends: 16116 [2021-11-07 13:16:41,535 INFO L226 Difference]: Without dead ends: 10749 [2021-11-07 13:16:41,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.82ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:16:41,550 INFO L933 BasicCegarLoop]: 3985 mSDtfsCounter, 3968 mSDsluCounter, 11896 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 15881 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 230.20ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:41,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 15881 Invalid, 63 Unknown, 0 Unchecked, 20.77ms Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 230.20ms Time] [2021-11-07 13:16:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10749 states. [2021-11-07 13:16:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10749 to 10733. [2021-11-07 13:16:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 10732 states have (on average 1.4627282892284756) internal successors, (15698), 10732 states have internal predecessors, (15698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15698 transitions. [2021-11-07 13:16:41,753 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15698 transitions. Word has length 46 [2021-11-07 13:16:41,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:41,754 INFO L470 AbstractCegarLoop]: Abstraction has 10733 states and 15698 transitions. [2021-11-07 13:16:41,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15698 transitions. [2021-11-07 13:16:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 13:16:41,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:41,764 INFO L514 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] [2021-11-07 13:16:41,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:16:41,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 224524464, now seen corresponding path program 1 times [2021-11-07 13:16:41,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:41,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382213654] [2021-11-07 13:16:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:41,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:42,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:42,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382213654] [2021-11-07 13:16:42,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382213654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:42,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:42,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:42,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745859049] [2021-11-07 13:16:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:42,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:16:42,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:16:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:16:42,140 INFO L87 Difference]: Start difference. First operand 10733 states and 15698 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:42,544 INFO L93 Difference]: Finished difference Result 23393 states and 34137 transitions. [2021-11-07 13:16:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:16:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2021-11-07 13:16:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:42,597 INFO L225 Difference]: With dead ends: 23393 [2021-11-07 13:16:42,597 INFO L226 Difference]: Without dead ends: 12707 [2021-11-07 13:16:42,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:16:42,618 INFO L933 BasicCegarLoop]: 4009 mSDtfsCounter, 773 mSDsluCounter, 3885 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 7894 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.76ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:42,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 7894 Invalid, 59 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 242.76ms Time] [2021-11-07 13:16:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12707 states. [2021-11-07 13:16:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12707 to 12695. [2021-11-07 13:16:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12695 states, 12694 states have (on average 1.4558058925476602) internal successors, (18480), 12694 states have internal predecessors, (18480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12695 states to 12695 states and 18480 transitions. [2021-11-07 13:16:42,866 INFO L78 Accepts]: Start accepts. Automaton has 12695 states and 18480 transitions. Word has length 77 [2021-11-07 13:16:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:42,867 INFO L470 AbstractCegarLoop]: Abstraction has 12695 states and 18480 transitions. [2021-11-07 13:16:42,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 12695 states and 18480 transitions. [2021-11-07 13:16:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 13:16:42,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:42,871 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:16:42,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:16:42,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1093431886, now seen corresponding path program 1 times [2021-11-07 13:16:42,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:42,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344360128] [2021-11-07 13:16:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:42,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:43,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:43,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344360128] [2021-11-07 13:16:43,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344360128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:43,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:43,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:43,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881592852] [2021-11-07 13:16:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:43,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:16:43,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:16:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:16:43,132 INFO L87 Difference]: Start difference. First operand 12695 states and 18480 transitions. Second operand has 3 states, 3 states have (on average 27.0) 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) [2021-11-07 13:16:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:43,513 INFO L93 Difference]: Finished difference Result 34253 states and 50040 transitions. [2021-11-07 13:16:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:16:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) 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 [2021-11-07 13:16:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:43,567 INFO L225 Difference]: With dead ends: 34253 [2021-11-07 13:16:43,567 INFO L226 Difference]: Without dead ends: 21605 [2021-11-07 13:16:43,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:16:43,595 INFO L933 BasicCegarLoop]: 7207 mSDtfsCounter, 3309 mSDsluCounter, 3925 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 11132 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.20ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126.38ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:43,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3309 Valid, 11132 Invalid, 12 Unknown, 0 Unchecked, 9.20ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 126.38ms Time] [2021-11-07 13:16:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2021-11-07 13:16:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21587. [2021-11-07 13:16:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 21586 states have (on average 1.4635411841008061) internal successors, (31592), 21586 states have internal predecessors, (31592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 31592 transitions. [2021-11-07 13:16:44,205 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 31592 transitions. Word has length 81 [2021-11-07 13:16:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:44,205 INFO L470 AbstractCegarLoop]: Abstraction has 21587 states and 31592 transitions. [2021-11-07 13:16:44,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) 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) [2021-11-07 13:16:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 31592 transitions. [2021-11-07 13:16:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 13:16:44,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:44,214 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:16:44,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:16:44,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1828511617, now seen corresponding path program 1 times [2021-11-07 13:16:44,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:44,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148537581] [2021-11-07 13:16:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:44,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:16:44,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:44,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148537581] [2021-11-07 13:16:44,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148537581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:44,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:44,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:16:44,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19555624] [2021-11-07 13:16:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:44,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:44,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:44,579 INFO L87 Difference]: Start difference. First operand 21587 states and 31592 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:46,023 INFO L93 Difference]: Finished difference Result 107400 states and 157263 transitions. [2021-11-07 13:16:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:46,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 [2021-11-07 13:16:46,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:46,200 INFO L225 Difference]: With dead ends: 107400 [2021-11-07 13:16:46,200 INFO L226 Difference]: Without dead ends: 85860 [2021-11-07 13:16:46,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:46,258 INFO L933 BasicCegarLoop]: 7914 mSDtfsCounter, 11752 mSDsluCounter, 11864 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11752 SdHoareTripleChecker+Valid, 19778 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.39ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.05ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:46,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11752 Valid, 19778 Invalid, 82 Unknown, 0 Unchecked, 27.39ms Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 175.05ms Time] [2021-11-07 13:16:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85860 states. [2021-11-07 13:16:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85860 to 21603. [2021-11-07 13:16:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21603 states, 21602 states have (on average 1.463197852050736) internal successors, (31608), 21602 states have internal predecessors, (31608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21603 states to 21603 states and 31608 transitions. [2021-11-07 13:16:47,251 INFO L78 Accepts]: Start accepts. Automaton has 21603 states and 31608 transitions. Word has length 93 [2021-11-07 13:16:47,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:47,252 INFO L470 AbstractCegarLoop]: Abstraction has 21603 states and 31608 transitions. [2021-11-07 13:16:47,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 21603 states and 31608 transitions. [2021-11-07 13:16:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 13:16:47,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:47,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:16:47,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:16:47,266 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1200765987, now seen corresponding path program 1 times [2021-11-07 13:16:47,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:47,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654638853] [2021-11-07 13:16:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:47,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:16:47,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:47,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654638853] [2021-11-07 13:16:47,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654638853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:47,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:47,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:16:47,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354664164] [2021-11-07 13:16:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:47,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:47,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:47,511 INFO L87 Difference]: Start difference. First operand 21603 states and 31608 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2021-11-07 13:16:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:48,305 INFO L93 Difference]: Finished difference Result 58187 states and 85266 transitions. [2021-11-07 13:16:48,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:16:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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 96 [2021-11-07 13:16:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:48,385 INFO L225 Difference]: With dead ends: 58187 [2021-11-07 13:16:48,385 INFO L226 Difference]: Without dead ends: 36631 [2021-11-07 13:16:48,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:48,425 INFO L933 BasicCegarLoop]: 6746 mSDtfsCounter, 6772 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6772 SdHoareTripleChecker+Valid, 10740 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.39ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:48,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6772 Valid, 10740 Invalid, 6 Unknown, 0 Unchecked, 9.32ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 97.39ms Time] [2021-11-07 13:16:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36631 states. [2021-11-07 13:16:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36631 to 21603. [2021-11-07 13:16:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21603 states, 21602 states have (on average 1.4628275159707433) internal successors, (31600), 21602 states have internal predecessors, (31600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21603 states to 21603 states and 31600 transitions. [2021-11-07 13:16:49,112 INFO L78 Accepts]: Start accepts. Automaton has 21603 states and 31600 transitions. Word has length 96 [2021-11-07 13:16:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:49,113 INFO L470 AbstractCegarLoop]: Abstraction has 21603 states and 31600 transitions. [2021-11-07 13:16:49,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2021-11-07 13:16:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 21603 states and 31600 transitions. [2021-11-07 13:16:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 13:16:49,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:49,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:16:49,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:16:49,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:49,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2073132955, now seen corresponding path program 1 times [2021-11-07 13:16:49,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:49,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734241535] [2021-11-07 13:16:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:49,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:16:49,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:49,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734241535] [2021-11-07 13:16:49,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734241535] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:16:49,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822488036] [2021-11-07 13:16:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:49,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:16:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:16:49,444 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) [2021-11-07 13:16:49,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 13:16:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:50,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 13:16:50,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:16:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:16:51,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:16:51,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822488036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:51,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:16:51,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 13:16:51,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825292438] [2021-11-07 13:16:51,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:51,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:16:51,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:16:51,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:16:51,268 INFO L87 Difference]: Start difference. First operand 21603 states and 31600 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) [2021-11-07 13:16:53,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:54,099 INFO L93 Difference]: Finished difference Result 43184 states and 63173 transitions. [2021-11-07 13:16:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:54,099 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 96 [2021-11-07 13:16:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:54,164 INFO L225 Difference]: With dead ends: 43184 [2021-11-07 13:16:54,179 INFO L226 Difference]: Without dead ends: 21618 [2021-11-07 13:16:54,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.37ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 13:16:54,205 INFO L933 BasicCegarLoop]: 3998 mSDtfsCounter, 21 mSDsluCounter, 11979 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2113.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 15977 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2221.97ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:54,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 15977 Invalid, 19 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2221.97ms Time] [2021-11-07 13:16:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21618 states. [2021-11-07 13:16:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21618 to 21608. [2021-11-07 13:16:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21608 states, 21607 states have (on average 1.4626278520849725) internal successors, (31603), 21607 states have internal predecessors, (31603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21608 states to 21608 states and 31603 transitions. [2021-11-07 13:16:54,792 INFO L78 Accepts]: Start accepts. Automaton has 21608 states and 31603 transitions. Word has length 96 [2021-11-07 13:16:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:54,792 INFO L470 AbstractCegarLoop]: Abstraction has 21608 states and 31603 transitions. [2021-11-07 13:16:54,793 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) [2021-11-07 13:16:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21608 states and 31603 transitions. [2021-11-07 13:16:54,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 13:16:54,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:54,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:16:54,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 13:16:55,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:16:55,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1871309021, now seen corresponding path program 1 times [2021-11-07 13:16:55,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:55,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44426864] [2021-11-07 13:16:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:55,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:16:55,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:55,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44426864] [2021-11-07 13:16:55,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44426864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:16:55,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386889447] [2021-11-07 13:16:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:55,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:16:55,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:16:55,336 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) [2021-11-07 13:16:55,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 13:16:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:57,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:16:57,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:16:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:16:57,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:16:57,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386889447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:57,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:16:57,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 13:16:57,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629074130] [2021-11-07 13:16:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:57,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:57,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:57,364 INFO L87 Difference]: Start difference. First operand 21608 states and 31603 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2021-11-07 13:16:59,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:00,700 INFO L93 Difference]: Finished difference Result 64728 states and 94691 transitions. [2021-11-07 13:17:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:17:00,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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 96 [2021-11-07 13:17:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:00,818 INFO L225 Difference]: With dead ends: 64728 [2021-11-07 13:17:00,818 INFO L226 Difference]: Without dead ends: 64716 [2021-11-07 13:17:00,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:00,846 INFO L933 BasicCegarLoop]: 7919 mSDtfsCounter, 7804 mSDsluCounter, 7975 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2134.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7804 SdHoareTripleChecker+Valid, 15894 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.17ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2232.80ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:00,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7804 Valid, 15894 Invalid, 32 Unknown, 0 Unchecked, 12.17ms Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2232.80ms Time] [2021-11-07 13:17:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64716 states. [2021-11-07 13:17:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64716 to 57536. [2021-11-07 13:17:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57536 states, 57535 states have (on average 1.4659772312505432) internal successors, (84345), 57535 states have internal predecessors, (84345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57536 states to 57536 states and 84345 transitions. [2021-11-07 13:17:02,349 INFO L78 Accepts]: Start accepts. Automaton has 57536 states and 84345 transitions. Word has length 96 [2021-11-07 13:17:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:02,349 INFO L470 AbstractCegarLoop]: Abstraction has 57536 states and 84345 transitions. [2021-11-07 13:17:02,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2021-11-07 13:17:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 57536 states and 84345 transitions. [2021-11-07 13:17:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 13:17:02,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:02,366 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 13:17:02,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 13:17:02,587 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,SelfDestructingSolverStorable7 [2021-11-07 13:17:02,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1346718497, now seen corresponding path program 1 times [2021-11-07 13:17:02,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:02,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110544256] [2021-11-07 13:17:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:02,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:17:02,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:02,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110544256] [2021-11-07 13:17:02,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110544256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:02,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:02,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:02,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430598432] [2021-11-07 13:17:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:02,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:02,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:02,800 INFO L87 Difference]: Start difference. First operand 57536 states and 84345 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:04,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:07,480 INFO L93 Difference]: Finished difference Result 138471 states and 203314 transitions. [2021-11-07 13:17:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 13:17:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:07,634 INFO L225 Difference]: With dead ends: 138471 [2021-11-07 13:17:07,635 INFO L226 Difference]: Without dead ends: 80982 [2021-11-07 13:17:07,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:07,692 INFO L933 BasicCegarLoop]: 4032 mSDtfsCounter, 3859 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2107.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3859 SdHoareTripleChecker+Valid, 7395 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.68ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2234.57ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:07,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3859 Valid, 7395 Invalid, 16 Unknown, 0 Unchecked, 7.68ms Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2234.57ms Time] [2021-11-07 13:17:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80982 states. [2021-11-07 13:17:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80982 to 80940. [2021-11-07 13:17:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80940 states, 80939 states have (on average 1.4691681389688531) internal successors, (118913), 80939 states have internal predecessors, (118913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80940 states to 80940 states and 118913 transitions. [2021-11-07 13:17:09,970 INFO L78 Accepts]: Start accepts. Automaton has 80940 states and 118913 transitions. Word has length 97 [2021-11-07 13:17:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:09,971 INFO L470 AbstractCegarLoop]: Abstraction has 80940 states and 118913 transitions. [2021-11-07 13:17:09,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 80940 states and 118913 transitions. [2021-11-07 13:17:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 13:17:10,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:10,137 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:10,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 13:17:10,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash 594711244, now seen corresponding path program 1 times [2021-11-07 13:17:10,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:10,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090163537] [2021-11-07 13:17:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:10,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:17:10,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:10,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090163537] [2021-11-07 13:17:10,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090163537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:10,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:10,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:10,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761643947] [2021-11-07 13:17:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:10,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:10,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:10,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:10,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:10,394 INFO L87 Difference]: Start difference. First operand 80940 states and 118913 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:12,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:13,865 INFO L93 Difference]: Finished difference Result 123388 states and 181214 transitions. [2021-11-07 13:17:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:13,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-07 13:17:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:13,940 INFO L225 Difference]: With dead ends: 123388 [2021-11-07 13:17:13,940 INFO L226 Difference]: Without dead ends: 42391 [2021-11-07 13:17:14,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:14,008 INFO L933 BasicCegarLoop]: 4684 mSDtfsCounter, 3872 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2101.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 5447 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2213.22ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:14,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3872 Valid, 5447 Invalid, 13 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2213.22ms Time] [2021-11-07 13:17:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42391 states. [2021-11-07 13:17:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42391 to 42365. [2021-11-07 13:17:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42365 states, 42364 states have (on average 1.4657964309319234) internal successors, (62097), 42364 states have internal predecessors, (62097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42365 states to 42365 states and 62097 transitions. [2021-11-07 13:17:15,231 INFO L78 Accepts]: Start accepts. Automaton has 42365 states and 62097 transitions. Word has length 104 [2021-11-07 13:17:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:15,231 INFO L470 AbstractCegarLoop]: Abstraction has 42365 states and 62097 transitions. [2021-11-07 13:17:15,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 42365 states and 62097 transitions. [2021-11-07 13:17:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 13:17:15,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:15,247 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:15,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 13:17:15,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash -112229699, now seen corresponding path program 1 times [2021-11-07 13:17:15,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:15,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176601021] [2021-11-07 13:17:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:15,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 13:17:15,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:15,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176601021] [2021-11-07 13:17:15,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176601021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:15,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:15,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:15,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735870748] [2021-11-07 13:17:15,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:15,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:15,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:15,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:15,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:15,485 INFO L87 Difference]: Start difference. First operand 42365 states and 62097 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:17,307 INFO L93 Difference]: Finished difference Result 105613 states and 154847 transitions. [2021-11-07 13:17:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 116 [2021-11-07 13:17:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:17,458 INFO L225 Difference]: With dead ends: 105613 [2021-11-07 13:17:17,458 INFO L226 Difference]: Without dead ends: 84419 [2021-11-07 13:17:17,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:17,502 INFO L933 BasicCegarLoop]: 7892 mSDtfsCounter, 3922 mSDsluCounter, 3979 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 11871 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.83ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.05ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:17,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3922 Valid, 11871 Invalid, 10 Unknown, 0 Unchecked, 8.83ms Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 20.05ms Time] [2021-11-07 13:17:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84419 states. [2021-11-07 13:17:19,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84419 to 42391. [2021-11-07 13:17:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42391 states, 42390 states have (on average 1.4655107336636) internal successors, (62123), 42390 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42391 states to 42391 states and 62123 transitions. [2021-11-07 13:17:19,106 INFO L78 Accepts]: Start accepts. Automaton has 42391 states and 62123 transitions. Word has length 116 [2021-11-07 13:17:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:19,107 INFO L470 AbstractCegarLoop]: Abstraction has 42391 states and 62123 transitions. [2021-11-07 13:17:19,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 42391 states and 62123 transitions. [2021-11-07 13:17:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 13:17:19,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:19,124 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:19,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 13:17:19,125 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash 756383260, now seen corresponding path program 1 times [2021-11-07 13:17:19,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:19,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271942946] [2021-11-07 13:17:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:19,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 13:17:19,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:19,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271942946] [2021-11-07 13:17:19,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271942946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:19,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:19,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:17:19,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243694971] [2021-11-07 13:17:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:19,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:17:19,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:19,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:17:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:17:19,400 INFO L87 Difference]: Start difference. First operand 42391 states and 62123 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:21,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:23,726 INFO L93 Difference]: Finished difference Result 104567 states and 153324 transitions. [2021-11-07 13:17:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:17:23,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 118 [2021-11-07 13:17:23,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:23,817 INFO L225 Difference]: With dead ends: 104567 [2021-11-07 13:17:23,817 INFO L226 Difference]: Without dead ends: 59315 [2021-11-07 13:17:23,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.81ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:17:23,862 INFO L933 BasicCegarLoop]: 7869 mSDtfsCounter, 7794 mSDsluCounter, 7823 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2236.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7794 SdHoareTripleChecker+Valid, 15692 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.06ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2377.49ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:23,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7794 Valid, 15692 Invalid, 31 Unknown, 0 Unchecked, 16.06ms Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2377.49ms Time] [2021-11-07 13:17:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59315 states. [2021-11-07 13:17:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59315 to 39807. [2021-11-07 13:17:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39807 states, 39806 states have (on average 1.468547455157514) internal successors, (58457), 39806 states have internal predecessors, (58457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39807 states to 39807 states and 58457 transitions. [2021-11-07 13:17:25,134 INFO L78 Accepts]: Start accepts. Automaton has 39807 states and 58457 transitions. Word has length 118 [2021-11-07 13:17:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:25,135 INFO L470 AbstractCegarLoop]: Abstraction has 39807 states and 58457 transitions. [2021-11-07 13:17:25,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 39807 states and 58457 transitions. [2021-11-07 13:17:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 13:17:25,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:25,148 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:25,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 13:17:25,148 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:25,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1418619509, now seen corresponding path program 1 times [2021-11-07 13:17:25,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:25,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128274620] [2021-11-07 13:17:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:25,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:17:25,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:25,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128274620] [2021-11-07 13:17:25,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128274620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:25,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:25,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:25,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643731875] [2021-11-07 13:17:25,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:25,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:25,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:25,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:25,376 INFO L87 Difference]: Start difference. First operand 39807 states and 58457 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:27,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:28,998 INFO L93 Difference]: Finished difference Result 79400 states and 116673 transitions. [2021-11-07 13:17:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 120 [2021-11-07 13:17:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:29,067 INFO L225 Difference]: With dead ends: 79400 [2021-11-07 13:17:29,067 INFO L226 Difference]: Without dead ends: 40694 [2021-11-07 13:17:29,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:29,112 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 2858 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2244.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2858 SdHoareTripleChecker+Valid, 6468 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2361.59ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:29,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2858 Valid, 6468 Invalid, 95 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [36 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2361.59ms Time] [2021-11-07 13:17:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40694 states. [2021-11-07 13:17:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40694 to 38368. [2021-11-07 13:17:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38368 states, 38367 states have (on average 1.4610472541507025) internal successors, (56056), 38367 states have internal predecessors, (56056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38368 states to 38368 states and 56056 transitions. [2021-11-07 13:17:30,482 INFO L78 Accepts]: Start accepts. Automaton has 38368 states and 56056 transitions. Word has length 120 [2021-11-07 13:17:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:30,482 INFO L470 AbstractCegarLoop]: Abstraction has 38368 states and 56056 transitions. [2021-11-07 13:17:30,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 38368 states and 56056 transitions. [2021-11-07 13:17:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 13:17:30,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:30,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:30,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 13:17:30,493 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1122261621, now seen corresponding path program 2 times [2021-11-07 13:17:30,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:30,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037017676] [2021-11-07 13:17:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:30,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 13:17:31,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:31,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037017676] [2021-11-07 13:17:31,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037017676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:31,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:31,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:31,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20608688] [2021-11-07 13:17:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:31,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:31,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:31,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:31,022 INFO L87 Difference]: Start difference. First operand 38368 states and 56056 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:31,877 INFO L93 Difference]: Finished difference Result 38378 states and 56066 transitions. [2021-11-07 13:17:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:31,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 120 [2021-11-07 13:17:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:31,943 INFO L225 Difference]: With dead ends: 38378 [2021-11-07 13:17:31,943 INFO L226 Difference]: Without dead ends: 38371 [2021-11-07 13:17:31,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:31,961 INFO L933 BasicCegarLoop]: 3992 mSDtfsCounter, 2 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7981 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.05ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:31,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7981 Invalid, 8 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 24.05ms Time] [2021-11-07 13:17:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38371 states. [2021-11-07 13:17:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38371 to 38369. [2021-11-07 13:17:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38369 states, 38368 states have (on average 1.4610352376980817) internal successors, (56057), 38368 states have internal predecessors, (56057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38369 states to 38369 states and 56057 transitions. [2021-11-07 13:17:33,214 INFO L78 Accepts]: Start accepts. Automaton has 38369 states and 56057 transitions. Word has length 120 [2021-11-07 13:17:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:33,214 INFO L470 AbstractCegarLoop]: Abstraction has 38369 states and 56057 transitions. [2021-11-07 13:17:33,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 38369 states and 56057 transitions. [2021-11-07 13:17:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 13:17:33,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:33,225 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:33,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 13:17:33,225 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1286003925, now seen corresponding path program 1 times [2021-11-07 13:17:33,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:33,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506307793] [2021-11-07 13:17:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:33,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 13:17:33,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:33,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506307793] [2021-11-07 13:17:33,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506307793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:17:33,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20199998] [2021-11-07 13:17:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:33,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:17:33,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:17:33,712 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) [2021-11-07 13:17:33,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 13:17:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:35,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 5607 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 13:17:35,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:17:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 13:17:35,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:17:35,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20199998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:35,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:17:35,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 13:17:35,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95653220] [2021-11-07 13:17:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:35,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:35,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:35,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:35,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:35,697 INFO L87 Difference]: Start difference. First operand 38369 states and 56057 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:36,977 INFO L93 Difference]: Finished difference Result 75983 states and 111068 transitions. [2021-11-07 13:17:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 123 [2021-11-07 13:17:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:37,039 INFO L225 Difference]: With dead ends: 75983 [2021-11-07 13:17:37,039 INFO L226 Difference]: Without dead ends: 38219 [2021-11-07 13:17:37,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.23ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:37,080 INFO L933 BasicCegarLoop]: 3917 mSDtfsCounter, 3896 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3896 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.35ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:37,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3896 Valid, 3917 Invalid, 63 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [31 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 122.35ms Time] [2021-11-07 13:17:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38219 states.