./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.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 5ed3d5c0aeaf7c032926a2347a2cd8f6e5404a73032a43856ee00d265d816a1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:04:43,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:04:43,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:04:44,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:04:44,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:04:44,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:04:44,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:04:44,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:04:44,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:04:44,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:04:44,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:04:44,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:04:44,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:04:44,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:04:44,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:04:44,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:04:44,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:04:44,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:04:44,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:04:44,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:04:44,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:04:44,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:04:44,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:04:44,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:04:44,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:04:44,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:04:44,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:04:44,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:04:44,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:04:44,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:04:44,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:04:44,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:04:44,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:04:44,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:04:44,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:04:44,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:04:44,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:04:44,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:04:44,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:04:44,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:04:44,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:04:44,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:04:44,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:04:44,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:04:44,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:04:44,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:04:44,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:04:44,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:04:44,074 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:04:44,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:04:44,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:04:44,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:04:44,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:04:44,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:04:44,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:04:44,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:04:44,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:04:44,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:04:44,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:04:44,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:04:44,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:04:44,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:04:44,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:04:44,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:04:44,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:04:44,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:04:44,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:04:44,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:04:44,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:04:44,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:04:44,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:04:44,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed3d5c0aeaf7c032926a2347a2cd8f6e5404a73032a43856ee00d265d816a1f [2021-11-06 20:04:44,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:04:44,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:04:44,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:04:44,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:04:44,321 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:04:44,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-06 20:04:44,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85533a324/17db589cbb504a73a0dba5db6cb63ff0/FLAG6fe9d56ec [2021-11-06 20:04:45,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:04:45,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-06 20:04:45,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85533a324/17db589cbb504a73a0dba5db6cb63ff0/FLAG6fe9d56ec [2021-11-06 20:04:45,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85533a324/17db589cbb504a73a0dba5db6cb63ff0 [2021-11-06 20:04:45,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:04:45,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:04:45,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:04:45,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:04:45,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:04:45,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:04:45" (1/1) ... [2021-11-06 20:04:45,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ca3a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:45, skipping insertion in model container [2021-11-06 20:04:45,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:04:45" (1/1) ... [2021-11-06 20:04:45,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:04:45,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:04:47,231 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-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310122,310135] [2021-11-06 20:04:47,234 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-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310267,310280] [2021-11-06 20:04:47,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:04:47,276 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:04:47,601 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-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310122,310135] [2021-11-06 20:04:47,602 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-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310267,310280] [2021-11-06 20:04:47,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:04:47,746 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:04:47,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47 WrapperNode [2021-11-06 20:04:47,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:04:47,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:04:47,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:04:47,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:04:47,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:47,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:04:49,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:04:49,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:04:49,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:04:49,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:04:49,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:04:49,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:04:49,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:04:49,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (1/1) ... [2021-11-06 20:04:49,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:04:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:04:50,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:04:50,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:04:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:04:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:04:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:04:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:04:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:04:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:04:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:04:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:04:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:04:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:04:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:04:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:04:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:04:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:04:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:05:11,514 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:05:11,515 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:05:11,515 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:05:11,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:05:11,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:05:11,517 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:05:11,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:05:11,557 INFO L299 CfgBuilder]: Removed 10504 assume(true) statements. [2021-11-06 20:05:11,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:05:11 BoogieIcfgContainer [2021-11-06 20:05:11,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:05:11,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:05:11,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:05:11,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:05:11,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:04:45" (1/3) ... [2021-11-06 20:05:11,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38de8022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:05:11, skipping insertion in model container [2021-11-06 20:05:11,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:04:47" (2/3) ... [2021-11-06 20:05:11,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38de8022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:05:11, skipping insertion in model container [2021-11-06 20:05:11,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:05:11" (3/3) ... [2021-11-06 20:05:11,572 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-06 20:05:11,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:05:11,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-06 20:05:11,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:05:11,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:05:11,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-06 20:05:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 6745 states, 6733 states have (on average 1.2137234516560225) internal successors, (8172), 6744 states have internal predecessors, (8172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 20:05:11,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:11,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:11,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -767304460, now seen corresponding path program 1 times [2021-11-06 20:05:11,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:11,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134578950] [2021-11-06 20:05:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:11,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:12,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:12,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134578950] [2021-11-06 20:05:12,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134578950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:12,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:12,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:12,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116607087] [2021-11-06 20:05:12,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:12,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:12,463 INFO L87 Difference]: Start difference. First operand has 6745 states, 6733 states have (on average 1.2137234516560225) internal successors, (8172), 6744 states have internal predecessors, (8172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:15,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:15,155 INFO L93 Difference]: Finished difference Result 19648 states and 23735 transitions. [2021-11-06 20:05:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 20:05:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:15,230 INFO L225 Difference]: With dead ends: 19648 [2021-11-06 20:05:15,231 INFO L226 Difference]: Without dead ends: 12645 [2021-11-06 20:05:15,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12645 states. [2021-11-06 20:05:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12645 to 12317. [2021-11-06 20:05:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12317 states, 12305 states have (on average 1.1919544900446972) internal successors, (14667), 12316 states have internal predecessors, (14667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12317 states to 12317 states and 14667 transitions. [2021-11-06 20:05:15,656 INFO L78 Accepts]: Start accepts. Automaton has 12317 states and 14667 transitions. Word has length 64 [2021-11-06 20:05:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:15,657 INFO L470 AbstractCegarLoop]: Abstraction has 12317 states and 14667 transitions. [2021-11-06 20:05:15,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 12317 states and 14667 transitions. [2021-11-06 20:05:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 20:05:15,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:15,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:15,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:05:15,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:15,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1484214665, now seen corresponding path program 1 times [2021-11-06 20:05:15,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:15,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014092587] [2021-11-06 20:05:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:15,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:15,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:15,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014092587] [2021-11-06 20:05:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014092587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:15,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:15,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:15,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818140018] [2021-11-06 20:05:15,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:15,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:15,908 INFO L87 Difference]: Start difference. First operand 12317 states and 14667 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) [2021-11-06 20:05:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:18,727 INFO L93 Difference]: Finished difference Result 28470 states and 34043 transitions. [2021-11-06 20:05:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:18,728 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 [2021-11-06 20:05:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:18,805 INFO L225 Difference]: With dead ends: 28470 [2021-11-06 20:05:18,806 INFO L226 Difference]: Without dead ends: 16229 [2021-11-06 20:05:18,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16229 states. [2021-11-06 20:05:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16229 to 16211. [2021-11-06 20:05:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16199 states have (on average 1.1985925057102291) internal successors, (19416), 16210 states have internal predecessors, (19416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 19416 transitions. [2021-11-06 20:05:19,253 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 19416 transitions. Word has length 70 [2021-11-06 20:05:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:19,255 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 19416 transitions. [2021-11-06 20:05:19,256 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) [2021-11-06 20:05:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 19416 transitions. [2021-11-06 20:05:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 20:05:19,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:19,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:19,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:05:19,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -662246185, now seen corresponding path program 1 times [2021-11-06 20:05:19,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:19,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118099283] [2021-11-06 20:05:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:19,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:19,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:19,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118099283] [2021-11-06 20:05:19,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118099283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:19,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:19,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:19,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600508537] [2021-11-06 20:05:19,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:19,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:19,466 INFO L87 Difference]: Start difference. First operand 16211 states and 19416 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:22,713 INFO L93 Difference]: Finished difference Result 46602 states and 55585 transitions. [2021-11-06 20:05:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 20:05:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:22,800 INFO L225 Difference]: With dead ends: 46602 [2021-11-06 20:05:22,801 INFO L226 Difference]: Without dead ends: 30467 [2021-11-06 20:05:22,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30467 states. [2021-11-06 20:05:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30467 to 30210. [2021-11-06 20:05:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30210 states, 30198 states have (on average 1.1907742234585073) internal successors, (35959), 30209 states have internal predecessors, (35959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30210 states to 30210 states and 35959 transitions. [2021-11-06 20:05:23,654 INFO L78 Accepts]: Start accepts. Automaton has 30210 states and 35959 transitions. Word has length 73 [2021-11-06 20:05:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:23,654 INFO L470 AbstractCegarLoop]: Abstraction has 30210 states and 35959 transitions. [2021-11-06 20:05:23,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:23,655 INFO L276 IsEmpty]: Start isEmpty. Operand 30210 states and 35959 transitions. [2021-11-06 20:05:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 20:05:23,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:23,660 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:23,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:05:23,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash -168020102, now seen corresponding path program 1 times [2021-11-06 20:05:23,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:23,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530461038] [2021-11-06 20:05:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:23,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:23,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:23,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530461038] [2021-11-06 20:05:23,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530461038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:23,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:23,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 20:05:23,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198383219] [2021-11-06 20:05:23,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:23,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:23,899 INFO L87 Difference]: Start difference. First operand 30210 states and 35959 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 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) [2021-11-06 20:05:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:25,744 INFO L93 Difference]: Finished difference Result 90478 states and 107707 transitions. [2021-11-06 20:05:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:25,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 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 108 [2021-11-06 20:05:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:25,925 INFO L225 Difference]: With dead ends: 90478 [2021-11-06 20:05:25,925 INFO L226 Difference]: Without dead ends: 60344 [2021-11-06 20:05:26,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60344 states. [2021-11-06 20:05:27,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60344 to 60320. [2021-11-06 20:05:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60320 states, 60308 states have (on average 1.186326855475227) internal successors, (71545), 60319 states have internal predecessors, (71545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60320 states to 60320 states and 71545 transitions. [2021-11-06 20:05:28,001 INFO L78 Accepts]: Start accepts. Automaton has 60320 states and 71545 transitions. Word has length 108 [2021-11-06 20:05:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:28,004 INFO L470 AbstractCegarLoop]: Abstraction has 60320 states and 71545 transitions. [2021-11-06 20:05:28,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 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) [2021-11-06 20:05:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 60320 states and 71545 transitions. [2021-11-06 20:05:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 20:05:28,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:28,014 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:28,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:05:28,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash -585416708, now seen corresponding path program 1 times [2021-11-06 20:05:28,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:28,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270347594] [2021-11-06 20:05:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:28,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:28,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:28,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270347594] [2021-11-06 20:05:28,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270347594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:28,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 20:05:28,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312408019] [2021-11-06 20:05:28,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:28,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:28,210 INFO L87 Difference]: Start difference. First operand 60320 states and 71545 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 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) [2021-11-06 20:05:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:29,559 INFO L93 Difference]: Finished difference Result 120548 states and 142989 transitions. [2021-11-06 20:05:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 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 108 [2021-11-06 20:05:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:29,740 INFO L225 Difference]: With dead ends: 120548 [2021-11-06 20:05:29,741 INFO L226 Difference]: Without dead ends: 60304 [2021-11-06 20:05:29,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60304 states. [2021-11-06 20:05:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60304 to 60304. [2021-11-06 20:05:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60304 states, 60292 states have (on average 1.1853148013003383) internal successors, (71465), 60303 states have internal predecessors, (71465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60304 states to 60304 states and 71465 transitions. [2021-11-06 20:05:31,787 INFO L78 Accepts]: Start accepts. Automaton has 60304 states and 71465 transitions. Word has length 108 [2021-11-06 20:05:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:31,787 INFO L470 AbstractCegarLoop]: Abstraction has 60304 states and 71465 transitions. [2021-11-06 20:05:31,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 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) [2021-11-06 20:05:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 60304 states and 71465 transitions. [2021-11-06 20:05:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 20:05:31,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:31,795 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:31,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:05:31,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 267003565, now seen corresponding path program 1 times [2021-11-06 20:05:31,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:31,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495010360] [2021-11-06 20:05:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:31,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:31,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:31,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495010360] [2021-11-06 20:05:31,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495010360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:31,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:31,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:31,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436898934] [2021-11-06 20:05:31,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:31,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:31,996 INFO L87 Difference]: Start difference. First operand 60304 states and 71465 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:36,212 INFO L93 Difference]: Finished difference Result 134350 states and 159478 transitions. [2021-11-06 20:05:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-06 20:05:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:36,381 INFO L225 Difference]: With dead ends: 134350 [2021-11-06 20:05:36,382 INFO L226 Difference]: Without dead ends: 74122 [2021-11-06 20:05:36,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74122 states. [2021-11-06 20:05:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74122 to 74080. [2021-11-06 20:05:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74080 states, 74068 states have (on average 1.187300858670411) internal successors, (87941), 74079 states have internal predecessors, (87941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74080 states to 74080 states and 87941 transitions. [2021-11-06 20:05:38,580 INFO L78 Accepts]: Start accepts. Automaton has 74080 states and 87941 transitions. Word has length 111 [2021-11-06 20:05:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:38,580 INFO L470 AbstractCegarLoop]: Abstraction has 74080 states and 87941 transitions. [2021-11-06 20:05:38,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 74080 states and 87941 transitions. [2021-11-06 20:05:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 20:05:38,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:38,590 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:05:38,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:05:38,591 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1758692867, now seen corresponding path program 1 times [2021-11-06 20:05:38,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:38,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730447597] [2021-11-06 20:05:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:38,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:05:38,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:38,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730447597] [2021-11-06 20:05:38,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730447597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:38,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:38,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:38,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176032707] [2021-11-06 20:05:38,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:38,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:38,771 INFO L87 Difference]: Start difference. First operand 74080 states and 87941 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 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) [2021-11-06 20:05:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:43,244 INFO L93 Difference]: Finished difference Result 190572 states and 227306 transitions. [2021-11-06 20:05:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 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 139 [2021-11-06 20:05:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:43,544 INFO L225 Difference]: With dead ends: 190572 [2021-11-06 20:05:43,545 INFO L226 Difference]: Without dead ends: 116568 [2021-11-06 20:05:43,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116568 states. [2021-11-06 20:05:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116568 to 116344. [2021-11-06 20:05:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116344 states, 116332 states have (on average 1.1964807619571571) internal successors, (139189), 116343 states have internal predecessors, (139189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116344 states to 116344 states and 139189 transitions. [2021-11-06 20:05:46,705 INFO L78 Accepts]: Start accepts. Automaton has 116344 states and 139189 transitions. Word has length 139 [2021-11-06 20:05:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:46,705 INFO L470 AbstractCegarLoop]: Abstraction has 116344 states and 139189 transitions. [2021-11-06 20:05:46,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 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) [2021-11-06 20:05:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 116344 states and 139189 transitions. [2021-11-06 20:05:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 20:05:46,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:46,716 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 20:05:46,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:05:46,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1614672935, now seen corresponding path program 1 times [2021-11-06 20:05:46,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:46,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077241726] [2021-11-06 20:05:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:46,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:05:46,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:46,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077241726] [2021-11-06 20:05:46,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077241726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:46,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:46,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:46,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388984322] [2021-11-06 20:05:46,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:46,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:46,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:46,892 INFO L87 Difference]: Start difference. First operand 116344 states and 139189 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) [2021-11-06 20:05:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:05:51,917 INFO L93 Difference]: Finished difference Result 249950 states and 299622 transitions. [2021-11-06 20:05:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:05:51,917 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 148 [2021-11-06 20:05:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:05:52,186 INFO L225 Difference]: With dead ends: 249950 [2021-11-06 20:05:52,186 INFO L226 Difference]: Without dead ends: 133682 [2021-11-06 20:05:52,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133682 states. [2021-11-06 20:05:55,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133682 to 133608. [2021-11-06 20:05:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133608 states, 133596 states have (on average 1.1996841222791101) internal successors, (160273), 133607 states have internal predecessors, (160273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:05:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133608 states to 133608 states and 160273 transitions. [2021-11-06 20:05:55,941 INFO L78 Accepts]: Start accepts. Automaton has 133608 states and 160273 transitions. Word has length 148 [2021-11-06 20:05:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:05:55,941 INFO L470 AbstractCegarLoop]: Abstraction has 133608 states and 160273 transitions. [2021-11-06 20:05:55,941 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) [2021-11-06 20:05:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 133608 states and 160273 transitions. [2021-11-06 20:05:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 20:05:55,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:05:55,955 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 20:05:55,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 20:05:55,955 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:05:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:05:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1308487063, now seen corresponding path program 1 times [2021-11-06 20:05:55,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:05:55,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349633273] [2021-11-06 20:05:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:05:55,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:05:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:05:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:05:56,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:05:56,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349633273] [2021-11-06 20:05:56,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349633273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:05:56,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:05:56,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:05:56,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868949827] [2021-11-06 20:05:56,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:05:56,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:05:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:05:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:05:56,132 INFO L87 Difference]: Start difference. First operand 133608 states and 160273 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)