/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:32:53,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:32:53,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:32:54,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:32:54,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:32:54,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:32:54,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:32:54,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:32:54,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:32:54,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:32:54,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:32:54,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:32:54,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:32:54,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:32:54,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:32:54,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:32:54,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:32:54,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:32:54,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:32:54,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:32:54,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:32:54,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:32:54,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:32:54,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:32:54,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:32:54,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:32:54,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:32:54,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:32:54,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:32:54,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:32:54,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:32:54,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:32:54,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:32:54,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:32:54,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:32:54,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:32:54,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:32:54,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:32:54,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:32:54,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:32:54,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:32:54,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:32:54,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:32:54,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:32:54,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:32:54,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:32:54,206 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:32:54,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:32:54,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:32:54,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:32:54,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:32:54,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:32:54,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:32:54,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:32:54,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:32:54,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:32:54,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:32:54,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:32:54,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:32:54,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:32:54,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:32:54,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:32:54,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:32:54,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:32:54,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:32:54,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:32:54,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:32:54,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:32:54,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:32:54,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:32:54,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:32:54,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:32:54,610 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:32:54,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2020-12-22 15:32:54,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d03e9a3e/3c9b7ddc50a3442da1b02287e441b733/FLAGd3502969f [2020-12-22 15:32:55,727 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:32:55,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2020-12-22 15:32:55,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d03e9a3e/3c9b7ddc50a3442da1b02287e441b733/FLAGd3502969f [2020-12-22 15:32:56,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d03e9a3e/3c9b7ddc50a3442da1b02287e441b733 [2020-12-22 15:32:56,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:32:56,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:32:56,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:32:56,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:32:56,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:32:56,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:32:56" (1/1) ... [2020-12-22 15:32:56,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79411d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:56, skipping insertion in model container [2020-12-22 15:32:56,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:32:56" (1/1) ... [2020-12-22 15:32:56,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:32:56,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:33:00,397 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410722,410735] [2020-12-22 15:33:00,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410867,410880] [2020-12-22 15:33:00,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:33:00,551 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:33:00,991 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410722,410735] [2020-12-22 15:33:00,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410867,410880] [2020-12-22 15:33:00,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:33:02,201 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:33:02,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02 WrapperNode [2020-12-22 15:33:02,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:33:02,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:33:02,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:33:02,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:33:02,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:02,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:04,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:33:04,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:33:04,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:33:04,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:33:04,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:04,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:05,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:05,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:07,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:07,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:07,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... [2020-12-22 15:33:08,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:33:08,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:33:08,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:33:08,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:33:08,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:33:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:33:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:33:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:33:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:33:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:33:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:33:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:33:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:33:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:33:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:33:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:33:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:33:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:33:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:33:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:34:50,264 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#6: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,264 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#7: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,265 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,265 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#5: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,265 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,265 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,266 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,267 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2020-12-22 15:34:50,267 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2020-12-22 15:34:50,267 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 15:34:50,267 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#8: ldv_switch_1_#res := 0; [2020-12-22 15:34:50,269 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2020-12-22 15:34:50,271 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 15:34:50,273 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 15:34:50,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:34:50,328 INFO L299 CfgBuilder]: Removed 10743 assume(true) statements. [2020-12-22 15:34:50,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:50 BoogieIcfgContainer [2020-12-22 15:34:50,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:34:50,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:34:50,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:34:50,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:34:50,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:32:56" (1/3) ... [2020-12-22 15:34:50,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b74a33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:50, skipping insertion in model container [2020-12-22 15:34:50,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:33:02" (2/3) ... [2020-12-22 15:34:50,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b74a33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:50, skipping insertion in model container [2020-12-22 15:34:50,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:50" (3/3) ... [2020-12-22 15:34:50,350 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2020-12-22 15:34:50,356 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:34:50,369 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-22 15:34:50,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-22 15:34:50,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:34:50,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:34:50,462 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:34:50,462 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:34:50,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:34:50,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:34:50,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:34:50,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:34:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states. [2020-12-22 15:34:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 15:34:50,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:34:50,640 INFO L422 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, 1] [2020-12-22 15:34:50,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:34:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:34:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1813481632, now seen corresponding path program 1 times [2020-12-22 15:34:50,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:34:50,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129340148] [2020-12-22 15:34:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:34:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:34:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:34:52,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129340148] [2020-12-22 15:34:52,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:34:52,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:34:52,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235248104] [2020-12-22 15:34:52,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:34:52,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:34:52,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:34:52,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:34:52,370 INFO L87 Difference]: Start difference. First operand 10276 states. Second operand 3 states. [2020-12-22 15:34:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:34:55,671 INFO L93 Difference]: Finished difference Result 28517 states and 37127 transitions. [2020-12-22 15:34:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:34:55,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-12-22 15:34:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:34:55,798 INFO L225 Difference]: With dead ends: 28517 [2020-12-22 15:34:55,798 INFO L226 Difference]: Without dead ends: 18162 [2020-12-22 15:34:55,825 INFO L677 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 [2020-12-22 15:34:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2020-12-22 15:34:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 18124. [2020-12-22 15:34:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18124 states. [2020-12-22 15:34:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18124 states to 18124 states and 23331 transitions. [2020-12-22 15:34:56,469 INFO L78 Accepts]: Start accepts. Automaton has 18124 states and 23331 transitions. Word has length 140 [2020-12-22 15:34:56,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:34:56,475 INFO L481 AbstractCegarLoop]: Abstraction has 18124 states and 23331 transitions. [2020-12-22 15:34:56,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:34:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 18124 states and 23331 transitions. [2020-12-22 15:34:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 15:34:56,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:34:56,489 INFO L422 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, 1, 1, 1, 1] [2020-12-22 15:34:56,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:34:56,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:34:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:34:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1060683067, now seen corresponding path program 1 times [2020-12-22 15:34:56,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:34:56,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040400378] [2020-12-22 15:34:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:34:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:34:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:34:57,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040400378] [2020-12-22 15:34:57,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:34:57,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:34:57,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155764741] [2020-12-22 15:34:57,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:34:57,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:34:57,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:34:57,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:34:57,404 INFO L87 Difference]: Start difference. First operand 18124 states and 23331 transitions. Second operand 3 states. [2020-12-22 15:35:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:00,949 INFO L93 Difference]: Finished difference Result 52936 states and 68169 transitions. [2020-12-22 15:35:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:00,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-22 15:35:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:01,091 INFO L225 Difference]: With dead ends: 52936 [2020-12-22 15:35:01,091 INFO L226 Difference]: Without dead ends: 35120 [2020-12-22 15:35:01,124 INFO L677 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 [2020-12-22 15:35:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35120 states. [2020-12-22 15:35:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35120 to 35072. [2020-12-22 15:35:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35072 states. [2020-12-22 15:35:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35072 states to 35072 states and 45144 transitions. [2020-12-22 15:35:02,272 INFO L78 Accepts]: Start accepts. Automaton has 35072 states and 45144 transitions. Word has length 143 [2020-12-22 15:35:02,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:02,273 INFO L481 AbstractCegarLoop]: Abstraction has 35072 states and 45144 transitions. [2020-12-22 15:35:02,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 35072 states and 45144 transitions. [2020-12-22 15:35:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 15:35:02,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:02,279 INFO L422 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, 1, 1, 1, 1, 1] [2020-12-22 15:35:02,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:35:02,280 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:35:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1869724388, now seen corresponding path program 1 times [2020-12-22 15:35:02,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:02,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543513173] [2020-12-22 15:35:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:35:03,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543513173] [2020-12-22 15:35:03,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:03,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:35:03,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254975775] [2020-12-22 15:35:03,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:03,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:03,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:03,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:03,138 INFO L87 Difference]: Start difference. First operand 35072 states and 45144 transitions. Second operand 3 states. [2020-12-22 15:35:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:07,211 INFO L93 Difference]: Finished difference Result 103088 states and 132642 transitions. [2020-12-22 15:35:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:07,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-12-22 15:35:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:07,422 INFO L225 Difference]: With dead ends: 103088 [2020-12-22 15:35:07,423 INFO L226 Difference]: Without dead ends: 68324 [2020-12-22 15:35:07,502 INFO L677 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 [2020-12-22 15:35:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68324 states. [2020-12-22 15:35:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68324 to 68272. [2020-12-22 15:35:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68272 states. [2020-12-22 15:35:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68272 states to 68272 states and 87790 transitions. [2020-12-22 15:35:09,782 INFO L78 Accepts]: Start accepts. Automaton has 68272 states and 87790 transitions. Word has length 144 [2020-12-22 15:35:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:09,783 INFO L481 AbstractCegarLoop]: Abstraction has 68272 states and 87790 transitions. [2020-12-22 15:35:09,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 68272 states and 87790 transitions. [2020-12-22 15:35:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 15:35:09,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:09,798 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:09,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:35:09,799 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:35:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:09,799 INFO L82 PathProgramCache]: Analyzing trace with hash 752824777, now seen corresponding path program 1 times [2020-12-22 15:35:09,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:09,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636703845] [2020-12-22 15:35:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:35:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636703845] [2020-12-22 15:35:10,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:10,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:35:10,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455025705] [2020-12-22 15:35:10,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:10,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:10,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:10,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:10,642 INFO L87 Difference]: Start difference. First operand 68272 states and 87790 transitions. Second operand 3 states. [2020-12-22 15:35:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:15,252 INFO L93 Difference]: Finished difference Result 189316 states and 243232 transitions. [2020-12-22 15:35:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:15,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 15:35:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:15,526 INFO L225 Difference]: With dead ends: 189316 [2020-12-22 15:35:15,527 INFO L226 Difference]: Without dead ends: 121352 [2020-12-22 15:35:15,972 INFO L677 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 [2020-12-22 15:35:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121352 states. [2020-12-22 15:35:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121352 to 121284. [2020-12-22 15:35:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121284 states. [2020-12-22 15:35:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121284 states to 121284 states and 155654 transitions. [2020-12-22 15:35:19,017 INFO L78 Accepts]: Start accepts. Automaton has 121284 states and 155654 transitions. Word has length 148 [2020-12-22 15:35:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:19,033 INFO L481 AbstractCegarLoop]: Abstraction has 121284 states and 155654 transitions. [2020-12-22 15:35:19,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 121284 states and 155654 transitions. [2020-12-22 15:35:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 15:35:19,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:19,044 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:19,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:35:19,045 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:35:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:19,046 INFO L82 PathProgramCache]: Analyzing trace with hash -990539591, now seen corresponding path program 1 times [2020-12-22 15:35:19,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:19,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425185935] [2020-12-22 15:35:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:35:19,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425185935] [2020-12-22 15:35:19,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:19,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:35:19,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949536584] [2020-12-22 15:35:19,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:19,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:19,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:19,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:19,965 INFO L87 Difference]: Start difference. First operand 121284 states and 155654 transitions. Second operand 3 states. [2020-12-22 15:35:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:26,314 INFO L93 Difference]: Finished difference Result 333398 states and 428515 transitions. [2020-12-22 15:35:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:26,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-22 15:35:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:26,830 INFO L225 Difference]: With dead ends: 333398 [2020-12-22 15:35:26,831 INFO L226 Difference]: Without dead ends: 212422 [2020-12-22 15:35:27,005 INFO L677 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 [2020-12-22 15:35:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212422 states. [2020-12-22 15:35:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212422 to 212356. [2020-12-22 15:35:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212356 states. [2020-12-22 15:35:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212356 states to 212356 states and 272998 transitions. [2020-12-22 15:35:31,943 INFO L78 Accepts]: Start accepts. Automaton has 212356 states and 272998 transitions. Word has length 154 [2020-12-22 15:35:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:31,944 INFO L481 AbstractCegarLoop]: Abstraction has 212356 states and 272998 transitions. [2020-12-22 15:35:31,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 212356 states and 272998 transitions. [2020-12-22 15:35:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 15:35:31,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:31,953 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:31,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:35:31,954 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:35:31,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:31,954 INFO L82 PathProgramCache]: Analyzing trace with hash 291356204, now seen corresponding path program 1 times [2020-12-22 15:35:31,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:31,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866686967] [2020-12-22 15:35:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:35:32,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866686967] [2020-12-22 15:35:32,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:32,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:35:32,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225477137] [2020-12-22 15:35:32,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:32,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:32,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:32,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:32,937 INFO L87 Difference]: Start difference. First operand 212356 states and 272998 transitions. Second operand 3 states. [2020-12-22 15:35:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:42,201 INFO L93 Difference]: Finished difference Result 586870 states and 754483 transitions. [2020-12-22 15:35:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:42,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 15:35:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:42,959 INFO L225 Difference]: With dead ends: 586870 [2020-12-22 15:35:42,959 INFO L226 Difference]: Without dead ends: 374822 [2020-12-22 15:35:43,269 INFO L677 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 [2020-12-22 15:35:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374822 states. [2020-12-22 15:35:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374822 to 374740. [2020-12-22 15:35:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374740 states. [2020-12-22 15:35:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374740 states to 374740 states and 481446 transitions. [2020-12-22 15:35:52,673 INFO L78 Accepts]: Start accepts. Automaton has 374740 states and 481446 transitions. Word has length 156 [2020-12-22 15:35:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:52,674 INFO L481 AbstractCegarLoop]: Abstraction has 374740 states and 481446 transitions. [2020-12-22 15:35:52,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 374740 states and 481446 transitions. [2020-12-22 15:35:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 15:35:52,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:52,684 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:52,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:35:52,684 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:35:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:52,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2045627968, now seen corresponding path program 1 times [2020-12-22 15:35:52,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:52,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779569867] [2020-12-22 15:35:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:35:53,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779569867] [2020-12-22 15:35:53,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:53,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:35:53,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180185920] [2020-12-22 15:35:53,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:53,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:53,382 INFO L87 Difference]: Start difference. First operand 374740 states and 481446 transitions. Second operand 3 states. [2020-12-22 15:36:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:36:06,776 INFO L93 Difference]: Finished difference Result 751243 states and 965140 transitions. [2020-12-22 15:36:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:36:06,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 15:36:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:36:08,210 INFO L225 Difference]: With dead ends: 751243 [2020-12-22 15:36:08,211 INFO L226 Difference]: Without dead ends: 376811 [2020-12-22 15:36:09,143 INFO L677 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 [2020-12-22 15:36:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376811 states.