./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.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 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:26:11,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:26:11,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:26:11,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:26:11,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:26:11,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:26:11,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:26:11,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:26:11,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:26:11,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:26:11,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:26:11,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:26:11,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:26:11,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:26:11,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:26:11,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:26:11,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:26:11,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:26:11,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:26:11,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:26:11,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:26:11,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:26:11,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:26:11,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:26:11,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:26:11,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:26:11,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:26:11,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:26:11,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:26:11,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:26:11,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:26:11,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:26:11,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:26:11,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:26:11,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:26:11,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:26:11,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:26:11,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:26:11,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:26:11,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:26:11,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:26:11,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:26:11,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:26:11,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:26:11,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:26:11,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:26:11,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:26:11,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:26:11,933 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:26:11,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:26:11,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:26:11,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:26:11,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:26:11,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:26:11,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:26:11,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:26:11,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:26:11,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:26:11,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:26:11,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:26:11,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:26:11,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:26:11,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:26:11,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:26:11,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:26:11,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:26:11,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:26:11,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:26:11,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:26:11,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:26:11,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:26:11,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2021-11-07 15:26:12,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:26:12,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:26:12,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:26:12,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:26:12,176 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:26:12,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-07 15:26:12,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b784cd96d/a2802f1c2ea04543af69dbf2a4b4a4dc/FLAGfe8ce1ed0 [2021-11-07 15:26:12,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:26:12,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-07 15:26:12,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b784cd96d/a2802f1c2ea04543af69dbf2a4b4a4dc/FLAGfe8ce1ed0 [2021-11-07 15:26:13,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b784cd96d/a2802f1c2ea04543af69dbf2a4b4a4dc [2021-11-07 15:26:13,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:26:13,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:26:13,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:26:13,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:26:13,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:26:13,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:13" (1/1) ... [2021-11-07 15:26:13,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643c2548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:13, skipping insertion in model container [2021-11-07 15:26:13,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:13" (1/1) ... [2021-11-07 15:26:13,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:26:13,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:26:14,219 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-07 15:26:14,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:26:14,320 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:26:14,470 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-07 15:26:14,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:26:14,531 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:26:14,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14 WrapperNode [2021-11-07 15:26:14,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:26:14,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:26:14,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:26:14,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:26:14,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:26:14,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:26:14,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:26:14,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:26:14,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:14,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:15,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:26:15,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:26:15,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:26:15,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:26:15,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2021-11-07 15:26:15,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:26:15,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:26:15,069 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 15:26:15,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 15:26:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:26:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:26:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:26:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:26:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:26:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:26:24,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:26:24,686 INFO L299 CfgBuilder]: Removed 1477 assume(true) statements. [2021-11-07 15:26:24,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:26:24 BoogieIcfgContainer [2021-11-07 15:26:24,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:26:24,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:26:24,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:26:24,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:26:24,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:26:13" (1/3) ... [2021-11-07 15:26:24,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3567a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:26:24, skipping insertion in model container [2021-11-07 15:26:24,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (2/3) ... [2021-11-07 15:26:24,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3567a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:26:24, skipping insertion in model container [2021-11-07 15:26:24,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:26:24" (3/3) ... [2021-11-07 15:26:24,694 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-07 15:26:24,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:26:24,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-07 15:26:24,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:26:24,748 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 15:26:24,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-07 15:26:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 15:26:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 15:26:24,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:24,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:24,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -285552863, now seen corresponding path program 1 times [2021-11-07 15:26:24,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:24,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529496559] [2021-11-07 15:26:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:24,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:25,219 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 15:26:25,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:25,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529496559] [2021-11-07 15:26:25,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529496559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:25,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:25,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:25,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590594019] [2021-11-07 15:26:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:25,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:26:25,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:26:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:26:25,250 INFO L87 Difference]: Start difference. First operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 0 states have call successors, (0), 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 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 15:26:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:25,329 INFO L93 Difference]: Finished difference Result 2436 states and 3241 transitions. [2021-11-07 15:26:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:26:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-07 15:26:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:25,349 INFO L225 Difference]: With dead ends: 2436 [2021-11-07 15:26:25,349 INFO L226 Difference]: Without dead ends: 1211 [2021-11-07 15:26:25,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:26:25,358 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:25,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 6.60ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:26:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-07 15:26:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2021-11-07 15:26:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1173 states have (on average 1.3213981244671782) internal successors, (1550), 1210 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 15:26:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1550 transitions. [2021-11-07 15:26:25,433 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1550 transitions. Word has length 69 [2021-11-07 15:26:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:25,434 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1550 transitions. [2021-11-07 15:26:25,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 15:26:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1550 transitions. [2021-11-07 15:26:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 15:26:25,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:25,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:25,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:26:25,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 738566293, now seen corresponding path program 1 times [2021-11-07 15:26:25,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:25,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484952830] [2021-11-07 15:26:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:25,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:25,672 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 15:26:25,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:25,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484952830] [2021-11-07 15:26:25,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484952830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:25,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:25,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:25,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637140522] [2021-11-07 15:26:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:25,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:25,675 INFO L87 Difference]: Start difference. First operand 1211 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 15:26:27,796 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 15:26:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:28,010 INFO L93 Difference]: Finished difference Result 3478 states and 4477 transitions. [2021-11-07 15:26:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-07 15:26:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:28,020 INFO L225 Difference]: With dead ends: 3478 [2021-11-07 15:26:28,021 INFO L226 Difference]: Without dead ends: 2326 [2021-11-07 15:26:28,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:28,026 INFO L933 BasicCegarLoop]: 1547 mSDtfsCounter, 1445 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2128.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.44ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2267.18ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:28,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 3077 Invalid, 15 Unknown, 0 Unchecked, 7.44ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2267.18ms Time] [2021-11-07 15:26:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2021-11-07 15:26:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 2262. [2021-11-07 15:26:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2224 states have (on average 1.330935251798561) internal successors, (2960), 2261 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 15:26:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2960 transitions. [2021-11-07 15:26:28,071 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2960 transitions. Word has length 69 [2021-11-07 15:26:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:28,071 INFO L470 AbstractCegarLoop]: Abstraction has 2262 states and 2960 transitions. [2021-11-07 15:26:28,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 15:26:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2960 transitions. [2021-11-07 15:26:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 15:26:28,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:28,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:28,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:26:28,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1296347891, now seen corresponding path program 1 times [2021-11-07 15:26:28,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:28,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220363766] [2021-11-07 15:26:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:28,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:28,276 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 15:26:28,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:28,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220363766] [2021-11-07 15:26:28,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220363766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:28,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:28,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:28,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738527008] [2021-11-07 15:26:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:28,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:28,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:28,279 INFO L87 Difference]: Start difference. First operand 2262 states and 2960 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:26:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:28,433 INFO L93 Difference]: Finished difference Result 5533 states and 7220 transitions. [2021-11-07 15:26:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 15:26:28,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:28,442 INFO L225 Difference]: With dead ends: 5533 [2021-11-07 15:26:28,443 INFO L226 Difference]: Without dead ends: 3330 [2021-11-07 15:26:28,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:28,446 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 769 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.15ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:28,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 2997 Invalid, 41 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 92.15ms Time] [2021-11-07 15:26:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2021-11-07 15:26:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3278. [2021-11-07 15:26:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3240 states have (on average 1.3243827160493826) internal successors, (4291), 3277 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states 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 15:26:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4291 transitions. [2021-11-07 15:26:28,503 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4291 transitions. Word has length 70 [2021-11-07 15:26:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:28,504 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 4291 transitions. [2021-11-07 15:26:28,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:26:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4291 transitions. [2021-11-07 15:26:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 15:26:28,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:28,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:28,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:26:28,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:28,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1722340521, now seen corresponding path program 1 times [2021-11-07 15:26:28,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:28,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841588572] [2021-11-07 15:26:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:28,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:28,690 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 15:26:28,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:28,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841588572] [2021-11-07 15:26:28,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841588572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:28,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:28,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:28,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650673486] [2021-11-07 15:26:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:28,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:28,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:28,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:28,692 INFO L87 Difference]: Start difference. First operand 3278 states and 4291 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 15:26:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:28,739 INFO L93 Difference]: Finished difference Result 3278 states and 4291 transitions. [2021-11-07 15:26:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-07 15:26:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:28,749 INFO L225 Difference]: With dead ends: 3278 [2021-11-07 15:26:28,749 INFO L226 Difference]: Without dead ends: 3276 [2021-11-07 15:26:28,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:28,751 INFO L933 BasicCegarLoop]: 1547 mSDtfsCounter, 1472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.94ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:28,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 1547 Invalid, 1 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.94ms Time] [2021-11-07 15:26:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-11-07 15:26:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3276. [2021-11-07 15:26:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3239 states have (on average 1.3241741278172274) internal successors, (4289), 3275 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states 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 15:26:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4289 transitions. [2021-11-07 15:26:28,817 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4289 transitions. Word has length 78 [2021-11-07 15:26:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:28,818 INFO L470 AbstractCegarLoop]: Abstraction has 3276 states and 4289 transitions. [2021-11-07 15:26:28,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 15:26:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4289 transitions. [2021-11-07 15:26:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 15:26:28,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:28,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:28,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:26:28,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561284, now seen corresponding path program 1 times [2021-11-07 15:26:28,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:28,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646144316] [2021-11-07 15:26:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:28,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:28,943 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 15:26:28,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:28,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646144316] [2021-11-07 15:26:28,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646144316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:28,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:28,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:28,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932353266] [2021-11-07 15:26:28,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:28,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:28,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:28,946 INFO L87 Difference]: Start difference. First operand 3276 states and 4289 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 15:26:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:29,157 INFO L93 Difference]: Finished difference Result 8130 states and 10734 transitions. [2021-11-07 15:26:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:29,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-07 15:26:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:29,171 INFO L225 Difference]: With dead ends: 8130 [2021-11-07 15:26:29,172 INFO L226 Difference]: Without dead ends: 4913 [2021-11-07 15:26:29,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:29,180 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 1016 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.87ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:29,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 3789 Invalid, 24 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 67.87ms Time] [2021-11-07 15:26:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2021-11-07 15:26:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 4860. [2021-11-07 15:26:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4823 states have (on average 1.3421107194692101) internal successors, (6473), 4859 states have internal predecessors, (6473), 0 states have call successors, (0), 0 states 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 15:26:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 6473 transitions. [2021-11-07 15:26:29,298 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 6473 transitions. Word has length 78 [2021-11-07 15:26:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:29,298 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 6473 transitions. [2021-11-07 15:26:29,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 15:26:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 6473 transitions. [2021-11-07 15:26:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 15:26:29,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:29,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:29,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:26:29,300 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1852958457, now seen corresponding path program 1 times [2021-11-07 15:26:29,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:29,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87721374] [2021-11-07 15:26:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:29,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:29,424 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 15:26:29,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:29,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87721374] [2021-11-07 15:26:29,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87721374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:29,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:29,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:29,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320514851] [2021-11-07 15:26:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:29,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:29,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:29,426 INFO L87 Difference]: Start difference. First operand 4860 states and 6473 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:26:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:29,483 INFO L93 Difference]: Finished difference Result 4860 states and 6473 transitions. [2021-11-07 15:26:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:29,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 15:26:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:29,496 INFO L225 Difference]: With dead ends: 4860 [2021-11-07 15:26:29,496 INFO L226 Difference]: Without dead ends: 4858 [2021-11-07 15:26:29,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:29,498 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 1469 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.49ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:29,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1545 Invalid, 1 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.49ms Time] [2021-11-07 15:26:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-11-07 15:26:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4858. [2021-11-07 15:26:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4822 states have (on average 1.341974284529241) internal successors, (6471), 4857 states have internal predecessors, (6471), 0 states have call successors, (0), 0 states 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 15:26:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 6471 transitions. [2021-11-07 15:26:29,607 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 6471 transitions. Word has length 79 [2021-11-07 15:26:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:29,607 INFO L470 AbstractCegarLoop]: Abstraction has 4858 states and 6471 transitions. [2021-11-07 15:26:29,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:26:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 6471 transitions. [2021-11-07 15:26:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 15:26:29,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:29,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:29,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:26:29,609 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:29,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:29,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1607147187, now seen corresponding path program 1 times [2021-11-07 15:26:29,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:29,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870381521] [2021-11-07 15:26:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:29,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:29,728 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 15:26:29,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:29,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870381521] [2021-11-07 15:26:29,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870381521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:29,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:29,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:29,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249177190] [2021-11-07 15:26:29,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:29,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:29,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:29,730 INFO L87 Difference]: Start difference. First operand 4858 states and 6471 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 15:26:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:29,847 INFO L93 Difference]: Finished difference Result 4858 states and 6471 transitions. [2021-11-07 15:26:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-07 15:26:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:29,862 INFO L225 Difference]: With dead ends: 4858 [2021-11-07 15:26:29,862 INFO L226 Difference]: Without dead ends: 4856 [2021-11-07 15:26:29,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:29,865 INFO L933 BasicCegarLoop]: 1543 mSDtfsCounter, 1466 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.94ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:29,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 1543 Invalid, 1 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.94ms Time] [2021-11-07 15:26:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2021-11-07 15:26:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2021-11-07 15:26:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4821 states have (on average 1.3418377929890064) internal successors, (6469), 4855 states have internal predecessors, (6469), 0 states have call successors, (0), 0 states 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 15:26:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6469 transitions. [2021-11-07 15:26:30,018 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6469 transitions. Word has length 80 [2021-11-07 15:26:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:30,018 INFO L470 AbstractCegarLoop]: Abstraction has 4856 states and 6469 transitions. [2021-11-07 15:26:30,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 15:26:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6469 transitions. [2021-11-07 15:26:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 15:26:30,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:30,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:30,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 15:26:30,020 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1718034877, now seen corresponding path program 1 times [2021-11-07 15:26:30,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:30,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733815108] [2021-11-07 15:26:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:30,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:30,181 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 15:26:30,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:30,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733815108] [2021-11-07 15:26:30,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733815108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:30,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:30,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209988217] [2021-11-07 15:26:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:30,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:30,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:30,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:30,185 INFO L87 Difference]: Start difference. First operand 4856 states and 6469 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 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 15:26:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:30,428 INFO L93 Difference]: Finished difference Result 13984 states and 18732 transitions. [2021-11-07 15:26:30,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:30,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 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 15:26:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:30,453 INFO L225 Difference]: With dead ends: 13984 [2021-11-07 15:26:30,453 INFO L226 Difference]: Without dead ends: 9187 [2021-11-07 15:26:30,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:30,464 INFO L933 BasicCegarLoop]: 1537 mSDtfsCounter, 1374 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.93ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:30,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2922 Invalid, 39 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 57.93ms Time] [2021-11-07 15:26:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9187 states. [2021-11-07 15:26:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9187 to 8870. [2021-11-07 15:26:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8835 states have (on average 1.3475947934352008) internal successors, (11906), 8869 states have internal predecessors, (11906), 0 states have call successors, (0), 0 states 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 15:26:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 11906 transitions. [2021-11-07 15:26:30,762 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 11906 transitions. Word has length 81 [2021-11-07 15:26:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 8870 states and 11906 transitions. [2021-11-07 15:26:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 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 15:26:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 11906 transitions. [2021-11-07 15:26:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 15:26:30,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:30,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:30,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 15:26:30,764 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:30,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1719463747, now seen corresponding path program 1 times [2021-11-07 15:26:30,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:30,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922294066] [2021-11-07 15:26:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:30,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:30,899 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 15:26:30,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:30,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922294066] [2021-11-07 15:26:30,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922294066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:30,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:30,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:30,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827183717] [2021-11-07 15:26:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:30,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:30,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:30,901 INFO L87 Difference]: Start difference. First operand 8870 states and 11906 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 15:26:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:31,070 INFO L93 Difference]: Finished difference Result 8870 states and 11906 transitions. [2021-11-07 15:26:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-07 15:26:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:31,090 INFO L225 Difference]: With dead ends: 8870 [2021-11-07 15:26:31,090 INFO L226 Difference]: Without dead ends: 8860 [2021-11-07 15:26:31,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:31,096 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 1190 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.41ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:31,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 1777 Invalid, 25 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 40.41ms Time] [2021-11-07 15:26:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2021-11-07 15:26:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8860. [2021-11-07 15:26:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8860 states, 8830 states have (on average 1.3440543601359003) internal successors, (11868), 8859 states have internal predecessors, (11868), 0 states have call successors, (0), 0 states 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 15:26:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8860 states to 8860 states and 11868 transitions. [2021-11-07 15:26:31,400 INFO L78 Accepts]: Start accepts. Automaton has 8860 states and 11868 transitions. Word has length 82 [2021-11-07 15:26:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:31,401 INFO L470 AbstractCegarLoop]: Abstraction has 8860 states and 11868 transitions. [2021-11-07 15:26:31,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 15:26:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8860 states and 11868 transitions. [2021-11-07 15:26:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 15:26:31,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:31,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:31,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 15:26:31,402 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:31,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:31,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1763758707, now seen corresponding path program 1 times [2021-11-07 15:26:31,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:31,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783113424] [2021-11-07 15:26:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:31,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:31,556 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 15:26:31,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:31,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783113424] [2021-11-07 15:26:31,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783113424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:31,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:31,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:26:31,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119532596] [2021-11-07 15:26:31,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:31,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:31,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:31,558 INFO L87 Difference]: Start difference. First operand 8860 states and 11868 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 15:26:31,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:31,996 INFO L93 Difference]: Finished difference Result 25366 states and 34162 transitions. [2021-11-07 15:26:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:31,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-07 15:26:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:32,038 INFO L225 Difference]: With dead ends: 25366 [2021-11-07 15:26:32,038 INFO L226 Difference]: Without dead ends: 16557 [2021-11-07 15:26:32,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:32,061 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 1344 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.95ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.09ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:32,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 2974 Invalid, 73 Unknown, 0 Unchecked, 5.95ms Time], IncrementalHoareTripleChecker [28 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 114.09ms Time] [2021-11-07 15:26:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16557 states. [2021-11-07 15:26:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16557 to 15601. [2021-11-07 15:26:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15601 states, 15571 states have (on average 1.3482756406139618) internal successors, (20994), 15600 states have internal predecessors, (20994), 0 states have call successors, (0), 0 states 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 15:26:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15601 states to 15601 states and 20994 transitions. [2021-11-07 15:26:32,620 INFO L78 Accepts]: Start accepts. Automaton has 15601 states and 20994 transitions. Word has length 83 [2021-11-07 15:26:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:32,620 INFO L470 AbstractCegarLoop]: Abstraction has 15601 states and 20994 transitions. [2021-11-07 15:26:32,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 15:26:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15601 states and 20994 transitions. [2021-11-07 15:26:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 15:26:32,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:32,626 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, 1, 1, 1, 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 15:26:32,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 15:26:32,626 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1396152886, now seen corresponding path program 1 times [2021-11-07 15:26:32,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:32,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101139903] [2021-11-07 15:26:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:32,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:32,758 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 15:26:32,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:32,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101139903] [2021-11-07 15:26:32,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101139903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:32,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:32,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:32,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869268556] [2021-11-07 15:26:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:32,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:32,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:32,759 INFO L87 Difference]: Start difference. First operand 15601 states and 20994 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 15:26:34,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:35,182 INFO L93 Difference]: Finished difference Result 23722 states and 31907 transitions. [2021-11-07 15:26:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 15:26:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:35,200 INFO L225 Difference]: With dead ends: 23722 [2021-11-07 15:26:35,200 INFO L226 Difference]: Without dead ends: 8178 [2021-11-07 15:26:35,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:35,224 INFO L933 BasicCegarLoop]: 1542 mSDtfsCounter, 10 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2040.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2190.95ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:35,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 3070 Invalid, 6 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2190.95ms Time] [2021-11-07 15:26:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2021-11-07 15:26:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8121. [2021-11-07 15:26:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8121 states, 8091 states have (on average 1.3486590038314177) internal successors, (10912), 8120 states have internal predecessors, (10912), 0 states have call successors, (0), 0 states 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 15:26:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8121 states to 8121 states and 10912 transitions. [2021-11-07 15:26:35,554 INFO L78 Accepts]: Start accepts. Automaton has 8121 states and 10912 transitions. Word has length 104 [2021-11-07 15:26:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:35,554 INFO L470 AbstractCegarLoop]: Abstraction has 8121 states and 10912 transitions. [2021-11-07 15:26:35,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 15:26:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8121 states and 10912 transitions. [2021-11-07 15:26:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 15:26:35,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:35,557 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, 1, 1, 1, 1, 1, 1, 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 15:26:35,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 15:26:35,558 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1117139244, now seen corresponding path program 1 times [2021-11-07 15:26:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:35,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280514121] [2021-11-07 15:26:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:35,689 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 15:26:35,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:35,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280514121] [2021-11-07 15:26:35,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280514121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:35,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:35,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:35,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179596421] [2021-11-07 15:26:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:35,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:35,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:35,691 INFO L87 Difference]: Start difference. First operand 8121 states and 10912 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:26:37,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:38,194 INFO L93 Difference]: Finished difference Result 18536 states and 24974 transitions. [2021-11-07 15:26:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 15:26:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:38,224 INFO L225 Difference]: With dead ends: 18536 [2021-11-07 15:26:38,225 INFO L226 Difference]: Without dead ends: 10597 [2021-11-07 15:26:38,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:38,239 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 991 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2132.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2279.01ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:38,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 2906 Invalid, 65 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [20 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2279.01ms Time] [2021-11-07 15:26:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10597 states. [2021-11-07 15:26:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10597 to 10500. [2021-11-07 15:26:38,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10500 states, 10470 states have (on average 1.3476599808978031) internal successors, (14110), 10499 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states 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 15:26:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10500 states to 10500 states and 14110 transitions. [2021-11-07 15:26:38,482 INFO L78 Accepts]: Start accepts. Automaton has 10500 states and 14110 transitions. Word has length 107 [2021-11-07 15:26:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:38,482 INFO L470 AbstractCegarLoop]: Abstraction has 10500 states and 14110 transitions. [2021-11-07 15:26:38,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:26:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 10500 states and 14110 transitions. [2021-11-07 15:26:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 15:26:38,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:38,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:38,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 15:26:38,486 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2065523523, now seen corresponding path program 1 times [2021-11-07 15:26:38,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:38,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702437851] [2021-11-07 15:26:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:38,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:26:38,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:38,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702437851] [2021-11-07 15:26:38,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702437851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:38,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:38,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:38,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345146039] [2021-11-07 15:26:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:38,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:38,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:38,638 INFO L87 Difference]: Start difference. First operand 10500 states and 14110 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 15:26:40,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:41,049 INFO L93 Difference]: Finished difference Result 10500 states and 14110 transitions. [2021-11-07 15:26:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:41,050 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 110 [2021-11-07 15:26:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:41,066 INFO L225 Difference]: With dead ends: 10500 [2021-11-07 15:26:41,066 INFO L226 Difference]: Without dead ends: 10492 [2021-11-07 15:26:41,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:41,070 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 239 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2046.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2189.66ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:41,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 2786 Invalid, 20 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2189.66ms Time] [2021-11-07 15:26:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10492 states. [2021-11-07 15:26:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10492 to 10492. [2021-11-07 15:26:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10492 states, 10466 states have (on average 1.3460729982801451) internal successors, (14088), 10491 states have internal predecessors, (14088), 0 states have call successors, (0), 0 states 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 15:26:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10492 states to 10492 states and 14088 transitions. [2021-11-07 15:26:41,253 INFO L78 Accepts]: Start accepts. Automaton has 10492 states and 14088 transitions. Word has length 110 [2021-11-07 15:26:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:41,253 INFO L470 AbstractCegarLoop]: Abstraction has 10492 states and 14088 transitions. [2021-11-07 15:26:41,253 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 15:26:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10492 states and 14088 transitions. [2021-11-07 15:26:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 15:26:41,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:41,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:41,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 15:26:41,256 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2018589685, now seen corresponding path program 1 times [2021-11-07 15:26:41,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:41,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637678414] [2021-11-07 15:26:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:41,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:41,362 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 15:26:41,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:41,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637678414] [2021-11-07 15:26:41,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637678414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:41,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:41,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:41,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159123292] [2021-11-07 15:26:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:41,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:41,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:41,364 INFO L87 Difference]: Start difference. First operand 10492 states and 14088 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 15:26:43,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:43,842 INFO L93 Difference]: Finished difference Result 24373 states and 32936 transitions. [2021-11-07 15:26:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:43,843 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 112 [2021-11-07 15:26:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:43,867 INFO L225 Difference]: With dead ends: 24373 [2021-11-07 15:26:43,868 INFO L226 Difference]: Without dead ends: 14063 [2021-11-07 15:26:43,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:43,881 INFO L933 BasicCegarLoop]: 1698 mSDtfsCounter, 1120 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2052.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2209.49ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:43,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 3013 Invalid, 36 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2209.49ms Time] [2021-11-07 15:26:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14063 states. [2021-11-07 15:26:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14063 to 13806. [2021-11-07 15:26:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 13780 states have (on average 1.3558055152394775) internal successors, (18683), 13805 states have internal predecessors, (18683), 0 states have call successors, (0), 0 states 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 15:26:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 18683 transitions. [2021-11-07 15:26:44,124 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 18683 transitions. Word has length 112 [2021-11-07 15:26:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:44,124 INFO L470 AbstractCegarLoop]: Abstraction has 13806 states and 18683 transitions. [2021-11-07 15:26:44,124 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 15:26:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 18683 transitions. [2021-11-07 15:26:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 15:26:44,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:44,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:44,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 15:26:44,127 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1903864005, now seen corresponding path program 1 times [2021-11-07 15:26:44,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:44,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335257694] [2021-11-07 15:26:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:44,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:26:44,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:44,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335257694] [2021-11-07 15:26:44,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335257694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:44,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:44,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:26:44,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838334018] [2021-11-07 15:26:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:44,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:26:44,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:26:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:44,256 INFO L87 Difference]: Start difference. First operand 13806 states and 18683 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 15:26:46,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:46,821 INFO L93 Difference]: Finished difference Result 27522 states and 37251 transitions. [2021-11-07 15:26:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:26:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 119 [2021-11-07 15:26:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:46,841 INFO L225 Difference]: With dead ends: 27522 [2021-11-07 15:26:46,841 INFO L226 Difference]: Without dead ends: 13898 [2021-11-07 15:26:46,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:26:46,856 INFO L933 BasicCegarLoop]: 2516 mSDtfsCounter, 1280 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2064.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2222.57ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:46,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 3918 Invalid, 60 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2222.57ms Time] [2021-11-07 15:26:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13898 states. [2021-11-07 15:26:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13898 to 13560. [2021-11-07 15:26:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 13538 states have (on average 1.3547052740434333) internal successors, (18340), 13559 states have internal predecessors, (18340), 0 states have call successors, (0), 0 states 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 15:26:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 18340 transitions. [2021-11-07 15:26:47,185 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 18340 transitions. Word has length 119 [2021-11-07 15:26:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:47,185 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 18340 transitions. [2021-11-07 15:26:47,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 15:26:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 18340 transitions. [2021-11-07 15:26:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 15:26:47,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:47,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:47,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 15:26:47,188 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2108460640, now seen corresponding path program 1 times [2021-11-07 15:26:47,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:47,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970694198] [2021-11-07 15:26:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:47,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:26:47,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:47,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970694198] [2021-11-07 15:26:47,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970694198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:47,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:47,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:26:47,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792967510] [2021-11-07 15:26:47,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:47,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:26:47,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:26:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:26:47,435 INFO L87 Difference]: Start difference. First operand 13560 states and 18340 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 15:26:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:48,507 INFO L93 Difference]: Finished difference Result 62446 states and 84560 transitions. [2021-11-07 15:26:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:26:48,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 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 119 [2021-11-07 15:26:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:48,585 INFO L225 Difference]: With dead ends: 62446 [2021-11-07 15:26:48,585 INFO L226 Difference]: Without dead ends: 49068 [2021-11-07 15:26:48,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.45ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:26:48,616 INFO L933 BasicCegarLoop]: 2766 mSDtfsCounter, 7178 mSDsluCounter, 8070 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7178 SdHoareTripleChecker+Valid, 10836 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.97ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.91ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:48,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7178 Valid, 10836 Invalid, 76 Unknown, 0 Unchecked, 16.97ms Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 83.91ms Time] [2021-11-07 15:26:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49068 states. [2021-11-07 15:26:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49068 to 13480. [2021-11-07 15:26:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13480 states, 13462 states have (on average 1.3535878769870748) internal successors, (18222), 13479 states have internal predecessors, (18222), 0 states have call successors, (0), 0 states 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 15:26:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13480 states to 13480 states and 18222 transitions. [2021-11-07 15:26:49,302 INFO L78 Accepts]: Start accepts. Automaton has 13480 states and 18222 transitions. Word has length 119 [2021-11-07 15:26:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:49,302 INFO L470 AbstractCegarLoop]: Abstraction has 13480 states and 18222 transitions. [2021-11-07 15:26:49,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 15:26:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 13480 states and 18222 transitions. [2021-11-07 15:26:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 15:26:49,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:49,305 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:49,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 15:26:49,306 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2076200530, now seen corresponding path program 1 times [2021-11-07 15:26:49,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:49,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447425731] [2021-11-07 15:26:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:49,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:26:49,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:49,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447425731] [2021-11-07 15:26:49,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447425731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:49,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:49,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:26:49,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189266730] [2021-11-07 15:26:49,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:49,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:26:49,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:26:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:26:49,473 INFO L87 Difference]: Start difference. First operand 13480 states and 18222 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 15:26:51,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:52,346 INFO L93 Difference]: Finished difference Result 31941 states and 43094 transitions. [2021-11-07 15:26:52,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:26:52,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 124 [2021-11-07 15:26:52,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:52,383 INFO L225 Difference]: With dead ends: 31941 [2021-11-07 15:26:52,383 INFO L226 Difference]: Without dead ends: 18643 [2021-11-07 15:26:52,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.69ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:26:52,405 INFO L933 BasicCegarLoop]: 2640 mSDtfsCounter, 3238 mSDsluCounter, 4521 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2056.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 7161 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2259.62ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:52,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3238 Valid, 7161 Invalid, 21 Unknown, 0 Unchecked, 8.57ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2259.62ms Time] [2021-11-07 15:26:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18643 states. [2021-11-07 15:26:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18643 to 13516. [2021-11-07 15:26:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 13498 states have (on average 1.3526448362720402) internal successors, (18258), 13515 states have internal predecessors, (18258), 0 states have call successors, (0), 0 states 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 15:26:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 18258 transitions. [2021-11-07 15:26:52,993 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 18258 transitions. Word has length 124 [2021-11-07 15:26:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:52,994 INFO L470 AbstractCegarLoop]: Abstraction has 13516 states and 18258 transitions. [2021-11-07 15:26:52,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 15:26:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 18258 transitions. [2021-11-07 15:26:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 15:26:52,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:52,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:52,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 15:26:52,998 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1611362309, now seen corresponding path program 1 times [2021-11-07 15:26:52,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:52,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284123675] [2021-11-07 15:26:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:52,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:53,118 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 15:26:53,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:53,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284123675] [2021-11-07 15:26:53,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284123675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:53,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:53,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:26:53,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980664624] [2021-11-07 15:26:53,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:53,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:26:53,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:26:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:26:53,120 INFO L87 Difference]: Start difference. First operand 13516 states and 18258 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 15:26:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:54,718 INFO L93 Difference]: Finished difference Result 50906 states and 68846 transitions. [2021-11-07 15:26:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:26:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 133 [2021-11-07 15:26:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:54,801 INFO L225 Difference]: With dead ends: 50906 [2021-11-07 15:26:54,801 INFO L226 Difference]: Without dead ends: 37572 [2021-11-07 15:26:54,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.02ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:26:54,832 INFO L933 BasicCegarLoop]: 2754 mSDtfsCounter, 6366 mSDsluCounter, 5378 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6366 SdHoareTripleChecker+Valid, 8132 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.68ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.66ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:54,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6366 Valid, 8132 Invalid, 64 Unknown, 0 Unchecked, 9.68ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 111.66ms Time] [2021-11-07 15:26:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37572 states. [2021-11-07 15:26:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37572 to 13516. [2021-11-07 15:26:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 13498 states have (on average 1.3517558156763965) internal successors, (18246), 13515 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states 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 15:26:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 18246 transitions. [2021-11-07 15:26:55,535 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 18246 transitions. Word has length 133 [2021-11-07 15:26:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:55,535 INFO L470 AbstractCegarLoop]: Abstraction has 13516 states and 18246 transitions. [2021-11-07 15:26:55,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 15:26:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 18246 transitions. [2021-11-07 15:26:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 15:26:55,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:55,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:55,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 15:26:55,540 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1238562486, now seen corresponding path program 1 times [2021-11-07 15:26:55,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:55,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278597446] [2021-11-07 15:26:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:55,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:26:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:26:55,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:26:55,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278597446] [2021-11-07 15:26:55,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278597446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:26:55,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:26:55,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 15:26:55,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164920069] [2021-11-07 15:26:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:26:55,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 15:26:55,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:26:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 15:26:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:26:55,788 INFO L87 Difference]: Start difference. First operand 13516 states and 18246 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 15:26:57,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:26:59,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:26:59,095 INFO L93 Difference]: Finished difference Result 36120 states and 48630 transitions. [2021-11-07 15:26:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 15:26:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 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 134 [2021-11-07 15:26:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:26:59,133 INFO L225 Difference]: With dead ends: 36120 [2021-11-07 15:26:59,133 INFO L226 Difference]: Without dead ends: 22786 [2021-11-07 15:26:59,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 137.80ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-07 15:26:59,174 INFO L933 BasicCegarLoop]: 3622 mSDtfsCounter, 5379 mSDsluCounter, 9548 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2142.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5379 SdHoareTripleChecker+Valid, 13170 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2291.97ms IncrementalHoareTripleChecker+Time [2021-11-07 15:26:59,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5379 Valid, 13170 Invalid, 78 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2291.97ms Time] [2021-11-07 15:26:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22786 states. [2021-11-07 15:26:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22786 to 13708. [2021-11-07 15:26:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13708 states, 13690 states have (on average 1.3468224981738495) internal successors, (18438), 13707 states have internal predecessors, (18438), 0 states have call successors, (0), 0 states 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 15:26:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 18438 transitions. [2021-11-07 15:26:59,847 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 18438 transitions. Word has length 134 [2021-11-07 15:26:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:26:59,847 INFO L470 AbstractCegarLoop]: Abstraction has 13708 states and 18438 transitions. [2021-11-07 15:26:59,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 15:26:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 18438 transitions. [2021-11-07 15:26:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 15:26:59,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:26:59,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:26:59,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 15:26:59,873 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:26:59,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:26:59,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1927566436, now seen corresponding path program 1 times [2021-11-07 15:26:59,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:26:59,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256479609] [2021-11-07 15:26:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:26:59,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:26:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:00,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:00,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256479609] [2021-11-07 15:27:00,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256479609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:00,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:00,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:00,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50355626] [2021-11-07 15:27:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:00,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:00,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:00,083 INFO L87 Difference]: Start difference. First operand 13708 states and 18438 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 15:27:02,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:27:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:03,135 INFO L93 Difference]: Finished difference Result 32467 states and 43530 transitions. [2021-11-07 15:27:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:27:03,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 137 [2021-11-07 15:27:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:03,172 INFO L225 Difference]: With dead ends: 32467 [2021-11-07 15:27:03,172 INFO L226 Difference]: Without dead ends: 18941 [2021-11-07 15:27:03,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 52.39ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:27:03,193 INFO L933 BasicCegarLoop]: 2504 mSDtfsCounter, 2875 mSDsluCounter, 4601 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2074.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 7105 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2229.17ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:03,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2875 Valid, 7105 Invalid, 37 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2229.17ms Time] [2021-11-07 15:27:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18941 states. [2021-11-07 15:27:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18941 to 13792. [2021-11-07 15:27:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13792 states, 13774 states have (on average 1.3447074197763904) internal successors, (18522), 13791 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states 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 15:27:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13792 states to 13792 states and 18522 transitions. [2021-11-07 15:27:03,970 INFO L78 Accepts]: Start accepts. Automaton has 13792 states and 18522 transitions. Word has length 137 [2021-11-07 15:27:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:03,971 INFO L470 AbstractCegarLoop]: Abstraction has 13792 states and 18522 transitions. [2021-11-07 15:27:03,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 15:27:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 13792 states and 18522 transitions. [2021-11-07 15:27:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 15:27:03,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:03,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 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 15:27:03,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 15:27:03,976 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2043300210, now seen corresponding path program 1 times [2021-11-07 15:27:03,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:03,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850683374] [2021-11-07 15:27:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:03,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:04,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:04,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850683374] [2021-11-07 15:27:04,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850683374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:04,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:04,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:04,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884307058] [2021-11-07 15:27:04,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:04,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:04,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:04,144 INFO L87 Difference]: Start difference. First operand 13792 states and 18522 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 15:27:06,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:27:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:07,417 INFO L93 Difference]: Finished difference Result 32629 states and 43686 transitions. [2021-11-07 15:27:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:27:07,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 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 141 [2021-11-07 15:27:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:07,449 INFO L225 Difference]: With dead ends: 32629 [2021-11-07 15:27:07,449 INFO L226 Difference]: Without dead ends: 19019 [2021-11-07 15:27:07,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.78ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:27:07,464 INFO L933 BasicCegarLoop]: 2504 mSDtfsCounter, 2899 mSDsluCounter, 4573 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2080.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 7077 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2246.55ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:07,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 7077 Invalid, 35 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2246.55ms Time] [2021-11-07 15:27:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19019 states. [2021-11-07 15:27:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19019 to 13750. [2021-11-07 15:27:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13750 states, 13732 states have (on average 1.345324788814448) internal successors, (18474), 13749 states have internal predecessors, (18474), 0 states have call successors, (0), 0 states 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 15:27:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 18474 transitions. [2021-11-07 15:27:08,235 INFO L78 Accepts]: Start accepts. Automaton has 13750 states and 18474 transitions. Word has length 141 [2021-11-07 15:27:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:08,236 INFO L470 AbstractCegarLoop]: Abstraction has 13750 states and 18474 transitions. [2021-11-07 15:27:08,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 15:27:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13750 states and 18474 transitions. [2021-11-07 15:27:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 15:27:08,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:08,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:08,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 15:27:08,238 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash 66774099, now seen corresponding path program 1 times [2021-11-07 15:27:08,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:08,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953512278] [2021-11-07 15:27:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:08,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 15:27:08,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:08,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953512278] [2021-11-07 15:27:08,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953512278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:08,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:08,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:08,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803790444] [2021-11-07 15:27:08,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:08,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:08,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:08,443 INFO L87 Difference]: Start difference. First operand 13750 states and 18474 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 15:27:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:10,165 INFO L93 Difference]: Finished difference Result 32445 states and 43593 transitions. [2021-11-07 15:27:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 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 154 [2021-11-07 15:27:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:10,239 INFO L225 Difference]: With dead ends: 32445 [2021-11-07 15:27:10,239 INFO L226 Difference]: Without dead ends: 32355 [2021-11-07 15:27:10,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.64ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:10,257 INFO L933 BasicCegarLoop]: 2810 mSDtfsCounter, 5226 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 9917 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.69ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.27ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:10,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5226 Valid, 9917 Invalid, 38 Unknown, 0 Unchecked, 8.69ms Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 48.27ms Time] [2021-11-07 15:27:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32355 states. [2021-11-07 15:27:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32355 to 13662. [2021-11-07 15:27:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13662 states, 13644 states have (on average 1.3446936382292582) internal successors, (18347), 13661 states have internal predecessors, (18347), 0 states have call successors, (0), 0 states 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 15:27:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 18347 transitions. [2021-11-07 15:27:11,201 INFO L78 Accepts]: Start accepts. Automaton has 13662 states and 18347 transitions. Word has length 154 [2021-11-07 15:27:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:11,202 INFO L470 AbstractCegarLoop]: Abstraction has 13662 states and 18347 transitions. [2021-11-07 15:27:11,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 15:27:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 13662 states and 18347 transitions. [2021-11-07 15:27:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 15:27:11,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:11,226 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 15:27:11,226 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash -634290479, now seen corresponding path program 1 times [2021-11-07 15:27:11,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:11,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177151410] [2021-11-07 15:27:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:11,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 15:27:11,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:11,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177151410] [2021-11-07 15:27:11,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177151410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:11,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:11,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:27:11,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316531394] [2021-11-07 15:27:11,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:11,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:27:11,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:27:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:27:11,474 INFO L87 Difference]: Start difference. First operand 13662 states and 18347 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 15:27:13,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:27:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:14,300 INFO L93 Difference]: Finished difference Result 24086 states and 32300 transitions. [2021-11-07 15:27:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:27:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 154 [2021-11-07 15:27:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:14,320 INFO L225 Difference]: With dead ends: 24086 [2021-11-07 15:27:14,320 INFO L226 Difference]: Without dead ends: 10606 [2021-11-07 15:27:14,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:27:14,338 INFO L933 BasicCegarLoop]: 2629 mSDtfsCounter, 1348 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2061.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2234.55ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:14,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 3898 Invalid, 29 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2234.55ms Time] [2021-11-07 15:27:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2021-11-07 15:27:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10463. [2021-11-07 15:27:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 10453 states have (on average 1.339902420357792) internal successors, (14006), 10462 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states 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 15:27:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 14006 transitions. [2021-11-07 15:27:14,977 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 14006 transitions. Word has length 154 [2021-11-07 15:27:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:14,977 INFO L470 AbstractCegarLoop]: Abstraction has 10463 states and 14006 transitions. [2021-11-07 15:27:14,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 15:27:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 14006 transitions. [2021-11-07 15:27:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 15:27:14,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:14,981 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:14,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 15:27:14,981 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:14,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 903703252, now seen corresponding path program 1 times [2021-11-07 15:27:14,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:14,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28773967] [2021-11-07 15:27:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:14,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 15:27:15,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:15,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28773967] [2021-11-07 15:27:15,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28773967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:15,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:15,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:15,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417098105] [2021-11-07 15:27:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:15,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:15,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:15,165 INFO L87 Difference]: Start difference. First operand 10463 states and 14006 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 15:27:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:16,058 INFO L93 Difference]: Finished difference Result 24131 states and 32263 transitions. [2021-11-07 15:27:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:27:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 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 159 [2021-11-07 15:27:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:16,086 INFO L225 Difference]: With dead ends: 24131 [2021-11-07 15:27:16,086 INFO L226 Difference]: Without dead ends: 13850 [2021-11-07 15:27:16,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.25ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:16,102 INFO L933 BasicCegarLoop]: 2779 mSDtfsCounter, 3091 mSDsluCounter, 5484 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.56ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:16,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 8263 Invalid, 37 Unknown, 0 Unchecked, 7.37ms Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 71.56ms Time] [2021-11-07 15:27:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13850 states. [2021-11-07 15:27:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13850 to 7091. [2021-11-07 15:27:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7091 states, 7081 states have (on average 1.3358282728428188) internal successors, (9459), 7090 states have internal predecessors, (9459), 0 states have call successors, (0), 0 states 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 15:27:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7091 states to 7091 states and 9459 transitions. [2021-11-07 15:27:16,567 INFO L78 Accepts]: Start accepts. Automaton has 7091 states and 9459 transitions. Word has length 159 [2021-11-07 15:27:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:16,567 INFO L470 AbstractCegarLoop]: Abstraction has 7091 states and 9459 transitions. [2021-11-07 15:27:16,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 15:27:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7091 states and 9459 transitions. [2021-11-07 15:27:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 15:27:16,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:16,571 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:16,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 15:27:16,571 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:16,572 INFO L85 PathProgramCache]: Analyzing trace with hash -206023435, now seen corresponding path program 1 times [2021-11-07 15:27:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:16,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755569097] [2021-11-07 15:27:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:16,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:16,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:16,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755569097] [2021-11-07 15:27:16,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755569097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:16,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:16,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:16,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998724120] [2021-11-07 15:27:16,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:16,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:16,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:16,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:16,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:16,743 INFO L87 Difference]: Start difference. First operand 7091 states and 9459 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 15:27:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:17,691 INFO L93 Difference]: Finished difference Result 19781 states and 26483 transitions. [2021-11-07 15:27:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 205 [2021-11-07 15:27:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:17,716 INFO L225 Difference]: With dead ends: 19781 [2021-11-07 15:27:17,716 INFO L226 Difference]: Without dead ends: 12872 [2021-11-07 15:27:17,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.40ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:17,729 INFO L933 BasicCegarLoop]: 2495 mSDtfsCounter, 6014 mSDsluCounter, 7440 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6014 SdHoareTripleChecker+Valid, 9935 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.85ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:17,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6014 Valid, 9935 Invalid, 18 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 33.85ms Time] [2021-11-07 15:27:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12872 states. [2021-11-07 15:27:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12872 to 7109. [2021-11-07 15:27:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7109 states, 7099 states have (on average 1.334976757289759) internal successors, (9477), 7108 states have internal predecessors, (9477), 0 states have call successors, (0), 0 states 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 15:27:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 9477 transitions. [2021-11-07 15:27:18,215 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 9477 transitions. Word has length 205 [2021-11-07 15:27:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:18,215 INFO L470 AbstractCegarLoop]: Abstraction has 7109 states and 9477 transitions. [2021-11-07 15:27:18,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 15:27:18,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 9477 transitions. [2021-11-07 15:27:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 15:27:18,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:18,219 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:18,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 15:27:18,219 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash -303381284, now seen corresponding path program 1 times [2021-11-07 15:27:18,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:18,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264392165] [2021-11-07 15:27:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:18,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:18,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:18,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264392165] [2021-11-07 15:27:18,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264392165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:18,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:18,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:27:18,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476842047] [2021-11-07 15:27:18,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:18,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:27:18,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:27:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:27:18,402 INFO L87 Difference]: Start difference. First operand 7109 states and 9477 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 15:27:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:18,967 INFO L93 Difference]: Finished difference Result 14042 states and 18728 transitions. [2021-11-07 15:27:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:27:18,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 207 [2021-11-07 15:27:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:18,976 INFO L225 Difference]: With dead ends: 14042 [2021-11-07 15:27:18,976 INFO L226 Difference]: Without dead ends: 7115 [2021-11-07 15:27:18,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:27:18,983 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 0 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.72ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:18,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2978 Invalid, 5 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 61.72ms Time] [2021-11-07 15:27:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2021-11-07 15:27:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7115. [2021-11-07 15:27:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7115 states, 7105 states have (on average 1.3346938775510204) internal successors, (9483), 7114 states have internal predecessors, (9483), 0 states have call successors, (0), 0 states 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 15:27:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7115 states to 7115 states and 9483 transitions. [2021-11-07 15:27:19,373 INFO L78 Accepts]: Start accepts. Automaton has 7115 states and 9483 transitions. Word has length 207 [2021-11-07 15:27:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:19,373 INFO L470 AbstractCegarLoop]: Abstraction has 7115 states and 9483 transitions. [2021-11-07 15:27:19,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 15:27:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7115 states and 9483 transitions. [2021-11-07 15:27:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 15:27:19,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:19,377 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:19,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 15:27:19,377 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash -318900002, now seen corresponding path program 1 times [2021-11-07 15:27:19,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:19,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153705509] [2021-11-07 15:27:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:19,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:19,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:19,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153705509] [2021-11-07 15:27:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153705509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:19,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:19,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 15:27:19,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584908733] [2021-11-07 15:27:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:19,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 15:27:19,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 15:27:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:19,744 INFO L87 Difference]: Start difference. First operand 7115 states and 9483 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 15:27:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:21,964 INFO L93 Difference]: Finished difference Result 27815 states and 37317 transitions. [2021-11-07 15:27:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 15:27:21,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 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 207 [2021-11-07 15:27:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:21,991 INFO L225 Difference]: With dead ends: 27815 [2021-11-07 15:27:21,996 INFO L226 Difference]: Without dead ends: 20882 [2021-11-07 15:27:22,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 204.80ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 15:27:22,008 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 10297 mSDsluCounter, 13954 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 484.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10297 SdHoareTripleChecker+Valid, 17134 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.14ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 557.49ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:22,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10297 Valid, 17134 Invalid, 278 Unknown, 0 Unchecked, 19.14ms Time], IncrementalHoareTripleChecker [27 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 557.49ms Time] [2021-11-07 15:27:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20882 states. [2021-11-07 15:27:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20882 to 7145. [2021-11-07 15:27:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7135 states have (on average 1.3332866152768046) internal successors, (9513), 7144 states have internal predecessors, (9513), 0 states have call successors, (0), 0 states 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 15:27:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 9513 transitions. [2021-11-07 15:27:22,539 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 9513 transitions. Word has length 207 [2021-11-07 15:27:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:22,539 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 9513 transitions. [2021-11-07 15:27:22,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 15:27:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 9513 transitions. [2021-11-07 15:27:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-07 15:27:22,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:22,542 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:22,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 15:27:22,543 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:22,543 INFO L85 PathProgramCache]: Analyzing trace with hash 31817434, now seen corresponding path program 1 times [2021-11-07 15:27:22,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:22,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586844981] [2021-11-07 15:27:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:22,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:22,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:22,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586844981] [2021-11-07 15:27:22,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586844981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:22,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:22,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 15:27:22,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677391969] [2021-11-07 15:27:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:22,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 15:27:22,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 15:27:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 15:27:22,857 INFO L87 Difference]: Start difference. First operand 7145 states and 9513 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 15:27:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:24,380 INFO L93 Difference]: Finished difference Result 24205 states and 32369 transitions. [2021-11-07 15:27:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:27:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 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 209 [2021-11-07 15:27:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:24,405 INFO L225 Difference]: With dead ends: 24205 [2021-11-07 15:27:24,406 INFO L226 Difference]: Without dead ends: 17242 [2021-11-07 15:27:24,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.05ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 15:27:24,418 INFO L933 BasicCegarLoop]: 2205 mSDtfsCounter, 6352 mSDsluCounter, 8843 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6352 SdHoareTripleChecker+Valid, 11048 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.16ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.82ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:24,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6352 Valid, 11048 Invalid, 193 Unknown, 0 Unchecked, 10.16ms Time], IncrementalHoareTripleChecker [30 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 185.82ms Time] [2021-11-07 15:27:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2021-11-07 15:27:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 7169. [2021-11-07 15:27:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 7159 states have (on average 1.3321692973879034) internal successors, (9537), 7168 states have internal predecessors, (9537), 0 states have call successors, (0), 0 states 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 15:27:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 9537 transitions. [2021-11-07 15:27:25,047 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 9537 transitions. Word has length 209 [2021-11-07 15:27:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:25,048 INFO L470 AbstractCegarLoop]: Abstraction has 7169 states and 9537 transitions. [2021-11-07 15:27:25,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 15:27:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 9537 transitions. [2021-11-07 15:27:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 15:27:25,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:25,051 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:25,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 15:27:25,051 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:25,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1352257662, now seen corresponding path program 1 times [2021-11-07 15:27:25,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:25,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307481912] [2021-11-07 15:27:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:25,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:25,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:25,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307481912] [2021-11-07 15:27:25,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307481912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:25,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:25,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 15:27:25,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418082372] [2021-11-07 15:27:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:25,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 15:27:25,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 15:27:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 15:27:25,283 INFO L87 Difference]: Start difference. First operand 7169 states and 9537 transitions. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 15:27:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:26,740 INFO L93 Difference]: Finished difference Result 22392 states and 29892 transitions. [2021-11-07 15:27:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:26,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 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 211 [2021-11-07 15:27:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:26,761 INFO L225 Difference]: With dead ends: 22392 [2021-11-07 15:27:26,761 INFO L226 Difference]: Without dead ends: 15405 [2021-11-07 15:27:26,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.40ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 15:27:26,770 INFO L933 BasicCegarLoop]: 2205 mSDtfsCounter, 4759 mSDsluCounter, 8086 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 10291 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.54ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.47ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:26,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 10291 Invalid, 190 Unknown, 0 Unchecked, 9.54ms Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 189.47ms Time] [2021-11-07 15:27:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-07 15:27:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7193. [2021-11-07 15:27:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7193 states, 7183 states have (on average 1.3310594459139635) internal successors, (9561), 7192 states have internal predecessors, (9561), 0 states have call successors, (0), 0 states 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 15:27:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7193 states to 7193 states and 9561 transitions. [2021-11-07 15:27:27,358 INFO L78 Accepts]: Start accepts. Automaton has 7193 states and 9561 transitions. Word has length 211 [2021-11-07 15:27:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:27,358 INFO L470 AbstractCegarLoop]: Abstraction has 7193 states and 9561 transitions. [2021-11-07 15:27:27,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 15:27:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7193 states and 9561 transitions. [2021-11-07 15:27:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 15:27:27,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:27,362 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:27,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 15:27:27,362 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:27,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1179730182, now seen corresponding path program 1 times [2021-11-07 15:27:27,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:27,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622768592] [2021-11-07 15:27:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:27,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:27,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:27,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622768592] [2021-11-07 15:27:27,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622768592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:27,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:27,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:27,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790415357] [2021-11-07 15:27:27,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:27,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:27,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:27,590 INFO L87 Difference]: Start difference. First operand 7193 states and 9561 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 15:27:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:29,925 INFO L93 Difference]: Finished difference Result 34127 states and 45485 transitions. [2021-11-07 15:27:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 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 213 [2021-11-07 15:27:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:29,972 INFO L225 Difference]: With dead ends: 34127 [2021-11-07 15:27:29,973 INFO L226 Difference]: Without dead ends: 27116 [2021-11-07 15:27:29,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.88ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:29,993 INFO L933 BasicCegarLoop]: 3242 mSDtfsCounter, 4455 mSDsluCounter, 7911 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 11153 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.58ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.95ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:29,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 11153 Invalid, 131 Unknown, 0 Unchecked, 10.58ms Time], IncrementalHoareTripleChecker [17 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 166.95ms Time] [2021-11-07 15:27:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27116 states. [2021-11-07 15:27:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27116 to 7211. [2021-11-07 15:27:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7211 states, 7201 states have (on average 1.330231912234412) internal successors, (9579), 7210 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 15:27:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 9579 transitions. [2021-11-07 15:27:30,924 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 9579 transitions. Word has length 213 [2021-11-07 15:27:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:30,925 INFO L470 AbstractCegarLoop]: Abstraction has 7211 states and 9579 transitions. [2021-11-07 15:27:30,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 15:27:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 9579 transitions. [2021-11-07 15:27:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 15:27:30,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:30,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:30,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 15:27:30,930 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash 992428446, now seen corresponding path program 1 times [2021-11-07 15:27:30,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:30,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208670792] [2021-11-07 15:27:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:30,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:31,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:31,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208670792] [2021-11-07 15:27:31,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208670792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:31,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:31,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:31,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258175022] [2021-11-07 15:27:31,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:31,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:31,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:31,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:31,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:31,214 INFO L87 Difference]: Start difference. First operand 7211 states and 9579 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 15:27:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:33,817 INFO L93 Difference]: Finished difference Result 34145 states and 45497 transitions. [2021-11-07 15:27:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:33,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 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 215 [2021-11-07 15:27:33,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:33,862 INFO L225 Difference]: With dead ends: 34145 [2021-11-07 15:27:33,863 INFO L226 Difference]: Without dead ends: 27116 [2021-11-07 15:27:33,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.45ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:33,881 INFO L933 BasicCegarLoop]: 3242 mSDtfsCounter, 4455 mSDsluCounter, 7911 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 11153 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.78ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.76ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:33,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 11153 Invalid, 131 Unknown, 0 Unchecked, 10.78ms Time], IncrementalHoareTripleChecker [17 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 169.76ms Time] [2021-11-07 15:27:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27116 states. [2021-11-07 15:27:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27116 to 7229. [2021-11-07 15:27:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7229 states, 7219 states have (on average 1.3294085053331486) internal successors, (9597), 7228 states have internal predecessors, (9597), 0 states have call successors, (0), 0 states 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 15:27:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7229 states to 7229 states and 9597 transitions. [2021-11-07 15:27:34,753 INFO L78 Accepts]: Start accepts. Automaton has 7229 states and 9597 transitions. Word has length 215 [2021-11-07 15:27:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:34,754 INFO L470 AbstractCegarLoop]: Abstraction has 7229 states and 9597 transitions. [2021-11-07 15:27:34,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 15:27:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7229 states and 9597 transitions. [2021-11-07 15:27:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 15:27:34,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:34,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:34,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 15:27:34,758 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash 824808098, now seen corresponding path program 1 times [2021-11-07 15:27:34,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:34,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77236781] [2021-11-07 15:27:34,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:34,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:35,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:35,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77236781] [2021-11-07 15:27:35,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77236781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:35,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:35,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:27:35,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264294458] [2021-11-07 15:27:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:35,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:27:35,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:27:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:27:35,022 INFO L87 Difference]: Start difference. First operand 7229 states and 9597 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 15:27:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:37,144 INFO L93 Difference]: Finished difference Result 24933 states and 33197 transitions. [2021-11-07 15:27:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 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 217 [2021-11-07 15:27:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:37,169 INFO L225 Difference]: With dead ends: 24933 [2021-11-07 15:27:37,170 INFO L226 Difference]: Without dead ends: 17886 [2021-11-07 15:27:37,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.22ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:27:37,187 INFO L933 BasicCegarLoop]: 3262 mSDtfsCounter, 3407 mSDsluCounter, 7950 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 11212 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.42ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.53ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:37,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3407 Valid, 11212 Invalid, 128 Unknown, 0 Unchecked, 10.42ms Time], IncrementalHoareTripleChecker [14 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 250.53ms Time] [2021-11-07 15:27:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17886 states. [2021-11-07 15:27:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17886 to 7247. [2021-11-07 15:27:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 7237 states have (on average 1.3285891944175763) internal successors, (9615), 7246 states have internal predecessors, (9615), 0 states have call successors, (0), 0 states 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 15:27:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 9615 transitions. [2021-11-07 15:27:37,925 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 9615 transitions. Word has length 217 [2021-11-07 15:27:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:37,925 INFO L470 AbstractCegarLoop]: Abstraction has 7247 states and 9615 transitions. [2021-11-07 15:27:37,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 15:27:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 9615 transitions. [2021-11-07 15:27:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 15:27:37,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:37,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:37,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 15:27:37,929 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash 408308230, now seen corresponding path program 1 times [2021-11-07 15:27:37,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:37,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778906217] [2021-11-07 15:27:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:37,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:38,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:38,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778906217] [2021-11-07 15:27:38,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778906217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:38,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:38,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 15:27:38,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520189439] [2021-11-07 15:27:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 15:27:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 15:27:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 15:27:38,273 INFO L87 Difference]: Start difference. First operand 7247 states and 9615 transitions. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 15:27:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:40,268 INFO L93 Difference]: Finished difference Result 22470 states and 29946 transitions. [2021-11-07 15:27:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 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 219 [2021-11-07 15:27:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:40,291 INFO L225 Difference]: With dead ends: 22470 [2021-11-07 15:27:40,292 INFO L226 Difference]: Without dead ends: 15405 [2021-11-07 15:27:40,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 121.88ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 15:27:40,303 INFO L933 BasicCegarLoop]: 2205 mSDtfsCounter, 4759 mSDsluCounter, 8086 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 259.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 10291 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.30ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 335.21ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:40,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 10291 Invalid, 190 Unknown, 0 Unchecked, 9.30ms Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 335.21ms Time] [2021-11-07 15:27:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-07 15:27:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7271. [2021-11-07 15:27:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 7261 states have (on average 1.3275030987467291) internal successors, (9639), 7270 states have internal predecessors, (9639), 0 states have call successors, (0), 0 states 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 15:27:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 9639 transitions. [2021-11-07 15:27:41,084 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 9639 transitions. Word has length 219 [2021-11-07 15:27:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:41,084 INFO L470 AbstractCegarLoop]: Abstraction has 7271 states and 9639 transitions. [2021-11-07 15:27:41,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 15:27:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 9639 transitions. [2021-11-07 15:27:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-07 15:27:41,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:41,088 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:41,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 15:27:41,088 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1067450422, now seen corresponding path program 1 times [2021-11-07 15:27:41,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:41,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396133014] [2021-11-07 15:27:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:41,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:41,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:41,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396133014] [2021-11-07 15:27:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396133014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:41,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:41,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 15:27:41,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547902665] [2021-11-07 15:27:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:41,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 15:27:41,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 15:27:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 15:27:41,371 INFO L87 Difference]: Start difference. First operand 7271 states and 9639 transitions. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 15:27:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:43,455 INFO L93 Difference]: Finished difference Result 22494 states and 29964 transitions. [2021-11-07 15:27:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:43,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 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 221 [2021-11-07 15:27:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:43,484 INFO L225 Difference]: With dead ends: 22494 [2021-11-07 15:27:43,484 INFO L226 Difference]: Without dead ends: 15405 [2021-11-07 15:27:43,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.41ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 15:27:43,499 INFO L933 BasicCegarLoop]: 2205 mSDtfsCounter, 4759 mSDsluCounter, 8086 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 10291 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.01ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 223.74ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:43,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 10291 Invalid, 190 Unknown, 0 Unchecked, 11.01ms Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 223.74ms Time] [2021-11-07 15:27:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-07 15:27:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7295. [2021-11-07 15:27:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 7285 states have (on average 1.326424159231297) internal successors, (9663), 7294 states have internal predecessors, (9663), 0 states have call successors, (0), 0 states 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 15:27:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 9663 transitions. [2021-11-07 15:27:44,450 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 9663 transitions. Word has length 221 [2021-11-07 15:27:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:44,450 INFO L470 AbstractCegarLoop]: Abstraction has 7295 states and 9663 transitions. [2021-11-07 15:27:44,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 15:27:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 9663 transitions. [2021-11-07 15:27:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 15:27:44,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:44,454 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:44,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 15:27:44,454 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:44,455 INFO L85 PathProgramCache]: Analyzing trace with hash -41960346, now seen corresponding path program 1 times [2021-11-07 15:27:44,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:44,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085690337] [2021-11-07 15:27:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:44,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:27:44,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:44,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085690337] [2021-11-07 15:27:44,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085690337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:44,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:44,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 15:27:44,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843047809] [2021-11-07 15:27:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:44,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 15:27:44,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 15:27:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 15:27:44,738 INFO L87 Difference]: Start difference. First operand 7295 states and 9663 transitions. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 15:27:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:47,025 INFO L93 Difference]: Finished difference Result 22254 states and 29676 transitions. [2021-11-07 15:27:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:27:47,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 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 223 [2021-11-07 15:27:47,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:47,047 INFO L225 Difference]: With dead ends: 22254 [2021-11-07 15:27:47,047 INFO L226 Difference]: Without dead ends: 15141 [2021-11-07 15:27:47,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.06ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 15:27:47,057 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 4663 mSDsluCounter, 8394 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 254.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 10907 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.06ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 289.22ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:47,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 10907 Invalid, 190 Unknown, 0 Unchecked, 12.06ms Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 289.22ms Time] [2021-11-07 15:27:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15141 states. [2021-11-07 15:27:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15141 to 7319. [2021-11-07 15:27:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 7309 states have (on average 1.3253523053769325) internal successors, (9687), 7318 states have internal predecessors, (9687), 0 states have call successors, (0), 0 states 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 15:27:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 9687 transitions. [2021-11-07 15:27:48,027 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 9687 transitions. Word has length 223 [2021-11-07 15:27:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:48,027 INFO L470 AbstractCegarLoop]: Abstraction has 7319 states and 9687 transitions. [2021-11-07 15:27:48,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 15:27:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 9687 transitions. [2021-11-07 15:27:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-07 15:27:48,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:48,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:48,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 15:27:48,031 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash 580571946, now seen corresponding path program 1 times [2021-11-07 15:27:48,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:48,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075305178] [2021-11-07 15:27:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:48,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 15:27:49,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:49,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075305178] [2021-11-07 15:27:49,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075305178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:27:49,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:27:49,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:27:49,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754520106] [2021-11-07 15:27:49,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:27:49,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:27:49,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:27:49,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:27:49,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:27:49,004 INFO L87 Difference]: Start difference. First operand 7319 states and 9687 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 15:27:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:27:49,904 INFO L93 Difference]: Finished difference Result 14611 states and 19351 transitions. [2021-11-07 15:27:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:27:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 225 [2021-11-07 15:27:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:27:49,914 INFO L225 Difference]: With dead ends: 14611 [2021-11-07 15:27:49,914 INFO L226 Difference]: Without dead ends: 7324 [2021-11-07 15:27:49,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:27:49,922 INFO L933 BasicCegarLoop]: 1487 mSDtfsCounter, 0 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.63ms IncrementalHoareTripleChecker+Time [2021-11-07 15:27:49,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2952 Invalid, 35 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 45.63ms Time] [2021-11-07 15:27:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2021-11-07 15:27:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 7324. [2021-11-07 15:27:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7324 states, 7314 states have (on average 1.3251298878862456) internal successors, (9692), 7323 states have internal predecessors, (9692), 0 states have call successors, (0), 0 states 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 15:27:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7324 states to 7324 states and 9692 transitions. [2021-11-07 15:27:50,789 INFO L78 Accepts]: Start accepts. Automaton has 7324 states and 9692 transitions. Word has length 225 [2021-11-07 15:27:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:27:50,790 INFO L470 AbstractCegarLoop]: Abstraction has 7324 states and 9692 transitions. [2021-11-07 15:27:50,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 15:27:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 7324 states and 9692 transitions. [2021-11-07 15:27:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-07 15:27:50,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:27:50,794 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:50,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 15:27:50,794 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:27:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:27:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 453510249, now seen corresponding path program 1 times [2021-11-07 15:27:50,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:27:50,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687533204] [2021-11-07 15:27:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:50,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:27:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:27:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 15:27:51,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:27:51,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687533204] [2021-11-07 15:27:51,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687533204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:27:51,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439046427] [2021-11-07 15:27:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:27:51,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:27:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:27:51,960 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 15:27:51,964 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 15:29:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:29:57,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 3962 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 15:29:57,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:29:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 15:29:58,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 15:29:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 15:29:58,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439046427] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 15:29:58,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 15:29:58,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 15:29:58,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902394763] [2021-11-07 15:29:58,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 15:29:58,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 15:29:58,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:29:58,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 15:29:58,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:29:58,750 INFO L87 Difference]: Start difference. First operand 7324 states and 9692 transitions. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 15:29:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:29:59,903 INFO L93 Difference]: Finished difference Result 14638 states and 19396 transitions. [2021-11-07 15:29:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:29:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 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 230 [2021-11-07 15:29:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:29:59,914 INFO L225 Difference]: With dead ends: 14638 [2021-11-07 15:29:59,914 INFO L226 Difference]: Without dead ends: 7347 [2021-11-07 15:29:59,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 83.34ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:29:59,923 INFO L933 BasicCegarLoop]: 1483 mSDtfsCounter, 1435 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.45ms IncrementalHoareTripleChecker+Time [2021-11-07 15:29:59,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1435 Valid, 2978 Invalid, 154 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [81 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 192.45ms Time] [2021-11-07 15:29:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2021-11-07 15:30:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7347. [2021-11-07 15:30:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7347 states, 7337 states have (on average 1.3241106719367588) internal successors, (9715), 7346 states have internal predecessors, (9715), 0 states have call successors, (0), 0 states 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 15:30:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7347 states to 7347 states and 9715 transitions. [2021-11-07 15:30:00,791 INFO L78 Accepts]: Start accepts. Automaton has 7347 states and 9715 transitions. Word has length 230 [2021-11-07 15:30:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:30:00,792 INFO L470 AbstractCegarLoop]: Abstraction has 7347 states and 9715 transitions. [2021-11-07 15:30:00,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 15:30:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7347 states and 9715 transitions. [2021-11-07 15:30:00,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-07 15:30:00,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:30:00,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:00,881 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 15:30:01,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 15:30:01,010 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:30:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:30:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash 493328618, now seen corresponding path program 1 times [2021-11-07 15:30:01,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:30:01,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027656805] [2021-11-07 15:30:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:30:01,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:30:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:30:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 15:30:03,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:30:03,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027656805] [2021-11-07 15:30:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027656805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:30:03,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698096731] [2021-11-07 15:30:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:30:03,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:30:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:30:03,019 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 15:30:03,020 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 15:30:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:30:03,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 4100 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 15:30:03,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:30:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 15:30:04,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 15:30:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-07 15:30:05,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698096731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 15:30:05,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 15:30:05,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 5] total 18 [2021-11-07 15:30:05,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722557548] [2021-11-07 15:30:05,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 15:30:05,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 15:30:05,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:30:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 15:30:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-07 15:30:05,130 INFO L87 Difference]: Start difference. First operand 7347 states and 9715 transitions. Second operand has 18 states, 18 states have (on average 14.38888888888889) internal successors, (259), 18 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 15:30:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:30:08,006 INFO L93 Difference]: Finished difference Result 21959 states and 29085 transitions. [2021-11-07 15:30:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 15:30:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.38888888888889) internal successors, (259), 18 states have internal predecessors, (259), 0 states have call successors, (0), 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 253 [2021-11-07 15:30:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:30:08,031 INFO L225 Difference]: With dead ends: 21959 [2021-11-07 15:30:08,031 INFO L226 Difference]: Without dead ends: 14648 [2021-11-07 15:30:08,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 424.15ms TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-07 15:30:08,044 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 1434 mSDsluCounter, 16115 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 669.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 17594 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.46ms SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 761.68ms IncrementalHoareTripleChecker+Time [2021-11-07 15:30:08,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 17594 Invalid, 821 Unknown, 0 Unchecked, 13.46ms Time], IncrementalHoareTripleChecker [177 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 761.68ms Time] [2021-11-07 15:30:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14648 states. [2021-11-07 15:30:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14648 to 7375. [2021-11-07 15:30:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7375 states, 7365 states have (on average 1.3228784792939579) internal successors, (9743), 7374 states have internal predecessors, (9743), 0 states have call successors, (0), 0 states 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 15:30:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 9743 transitions. [2021-11-07 15:30:09,039 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 9743 transitions. Word has length 253 [2021-11-07 15:30:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:30:09,039 INFO L470 AbstractCegarLoop]: Abstraction has 7375 states and 9743 transitions. [2021-11-07 15:30:09,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.38888888888889) internal successors, (259), 18 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 15:30:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 9743 transitions. [2021-11-07 15:30:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-07 15:30:09,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:30:09,044 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:09,071 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 15:30:09,259 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,SelfDestructingSolverStorable37 [2021-11-07 15:30:09,260 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-07 15:30:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:30:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1032831318, now seen corresponding path program 2 times [2021-11-07 15:30:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:30:09,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129364411] [2021-11-07 15:30:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:30:09,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:30:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:30:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-07 15:30:25,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:30:25,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129364411] [2021-11-07 15:30:25,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129364411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:30:25,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527981903] [2021-11-07 15:30:25,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 15:30:25,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:30:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:30:25,500 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 15:30:25,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15