/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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 16:12:54,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 16:12:54,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 16:12:54,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 16:12:54,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 16:12:54,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 16:12:54,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 16:12:54,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 16:12:54,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 16:12:54,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 16:12:54,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 16:12:54,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 16:12:54,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 16:12:54,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 16:12:54,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 16:12:54,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 16:12:54,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 16:12:54,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 16:12:54,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 16:12:54,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 16:12:54,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 16:12:54,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 16:12:54,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 16:12:54,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 16:12:54,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 16:12:54,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 16:12:54,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 16:12:54,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 16:12:54,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 16:12:54,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 16:12:54,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 16:12:54,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 16:12:54,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 16:12:54,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 16:12:54,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 16:12:54,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 16:12:54,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 16:12:54,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 16:12:54,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 16:12:54,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 16:12:54,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 16:12:54,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 16:12:54,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 16:12:54,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 16:12:54,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 16:12:54,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 16:12:54,553 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 16:12:54,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 16:12:54,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 16:12:54,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 16:12:54,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 16:12:54,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 16:12:54,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 16:12:54,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 16:12:54,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 16:12:54,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 16:12:54,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 16:12:54,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 16:12:54,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 16:12:54,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 16:12:54,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 16:12:54,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 16:12:54,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 16:12:54,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 16:12:54,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 16:12:54,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 16:12:54,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 16:12:54,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 16:12:54,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 16:12:55,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 16:12:55,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 16:12:55,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 16:12:55,013 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 16:12:55,014 INFO L432 ainManager$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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2020-12-22 16:12:55,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db38dbf0/a1726802c69245e88bd6933aa2468564/FLAG205e78e28 [2020-12-22 16:12:56,253 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 16:12:56,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2020-12-22 16:12:56,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db38dbf0/a1726802c69245e88bd6933aa2468564/FLAG205e78e28 [2020-12-22 16:12:56,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db38dbf0/a1726802c69245e88bd6933aa2468564 [2020-12-22 16:12:56,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 16:12:56,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 16:12:56,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 16:12:56,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 16:12:56,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 16:12:56,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:12:56" (1/1) ... [2020-12-22 16:12:56,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73017919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:12:56, skipping insertion in model container [2020-12-22 16:12:56,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:12:56" (1/1) ... [2020-12-22 16:12:56,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 16:12:56,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 16:13:00,900 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2020-12-22 16:13:00,904 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2020-12-22 16:13:00,905 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2020-12-22 16:13:00,906 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2020-12-22 16:13:00,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:13:01,008 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 16:13:01,671 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2020-12-22 16:13:01,672 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2020-12-22 16:13:01,672 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2020-12-22 16:13:01,673 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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2020-12-22 16:13:01,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:13:02,603 INFO L208 MainTranslator]: Completed translation [2020-12-22 16:13:02,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02 WrapperNode [2020-12-22 16:13:02,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 16:13:02,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 16:13:02,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 16:13:02,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 16:13:02,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:02,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:05,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 16:13:05,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 16:13:05,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 16:13:05,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 16:13:05,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:05,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:06,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:06,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:07,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:08,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:08,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (1/1) ... [2020-12-22 16:13:09,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 16:13:09,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 16:13:09,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 16:13:09,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 16:13:09,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (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 16:13:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 16:13:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 16:13:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 16:13:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 16:13:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 16:13:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 16:13:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 16:13:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 16:13:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 16:13:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 16:13:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 16:13:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 16:13:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 16:13:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 16:13:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 16:14:47,586 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 16:14:47,587 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 16:14:47,587 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,587 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,587 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,588 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,588 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,588 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,588 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,588 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#9: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,589 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 16:14:47,591 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 16:14:47,592 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,595 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 16:14:47,597 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#10: ldv_switch_2_#res := 0; [2020-12-22 16:14:47,597 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 16:14:47,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 16:14:47,697 INFO L299 CfgBuilder]: Removed 16021 assume(true) statements. [2020-12-22 16:14:47,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:14:47 BoogieIcfgContainer [2020-12-22 16:14:47,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 16:14:47,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 16:14:47,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 16:14:47,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 16:14:47,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:12:56" (1/3) ... [2020-12-22 16:14:47,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43460e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:14:47, skipping insertion in model container [2020-12-22 16:14:47,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:13:02" (2/3) ... [2020-12-22 16:14:47,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43460e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:14:47, skipping insertion in model container [2020-12-22 16:14:47,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:14:47" (3/3) ... [2020-12-22 16:14:47,722 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2020-12-22 16:14:47,729 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 16:14:47,740 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 16:14:47,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 16:14:47,830 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 16:14:47,830 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 16:14:47,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 16:14:47,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 16:14:47,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 16:14:47,830 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 16:14:47,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 16:14:47,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 16:14:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 14905 states. [2020-12-22 16:14:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 16:14:48,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:14:48,005 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] [2020-12-22 16:14:48,006 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:14:48,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:14:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash 461028898, now seen corresponding path program 1 times [2020-12-22 16:14:48,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:14:48,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481262671] [2020-12-22 16:14:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:14:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:14:49,592 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 16:14:49,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481262671] [2020-12-22 16:14:49,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:14:49,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:14:49,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801998221] [2020-12-22 16:14:49,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:14:49,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:14:49,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:14:49,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:14:49,625 INFO L87 Difference]: Start difference. First operand 14905 states. Second operand 3 states. [2020-12-22 16:14:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:14:53,294 INFO L93 Difference]: Finished difference Result 44253 states and 59798 transitions. [2020-12-22 16:14:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:14:53,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 16:14:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:14:53,489 INFO L225 Difference]: With dead ends: 44253 [2020-12-22 16:14:53,490 INFO L226 Difference]: Without dead ends: 29066 [2020-12-22 16:14:53,530 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 16:14:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2020-12-22 16:14:54,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29064. [2020-12-22 16:14:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29064 states. [2020-12-22 16:14:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29064 states to 29064 states and 38865 transitions. [2020-12-22 16:14:54,786 INFO L78 Accepts]: Start accepts. Automaton has 29064 states and 38865 transitions. Word has length 57 [2020-12-22 16:14:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:14:54,788 INFO L481 AbstractCegarLoop]: Abstraction has 29064 states and 38865 transitions. [2020-12-22 16:14:54,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:14:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 29064 states and 38865 transitions. [2020-12-22 16:14:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 16:14:54,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:14:54,805 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] [2020-12-22 16:14:54,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 16:14:54,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:14:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:14:54,807 INFO L82 PathProgramCache]: Analyzing trace with hash 656236002, now seen corresponding path program 1 times [2020-12-22 16:14:54,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:14:54,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768504539] [2020-12-22 16:14:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:14:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:14:55,767 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 16:14:55,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768504539] [2020-12-22 16:14:55,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:14:55,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:14:55,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193688989] [2020-12-22 16:14:55,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:14:55,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:14:55,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:14:55,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:14:55,772 INFO L87 Difference]: Start difference. First operand 29064 states and 38865 transitions. Second operand 3 states. [2020-12-22 16:14:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:14:59,299 INFO L93 Difference]: Finished difference Result 54695 states and 73172 transitions. [2020-12-22 16:14:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:14:59,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 16:14:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:14:59,363 INFO L225 Difference]: With dead ends: 54695 [2020-12-22 16:14:59,365 INFO L226 Difference]: Without dead ends: 25739 [2020-12-22 16:14:59,415 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 16:14:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25739 states. [2020-12-22 16:15:00,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25739 to 25717. [2020-12-22 16:15:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25717 states. [2020-12-22 16:15:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25717 states to 25717 states and 34375 transitions. [2020-12-22 16:15:00,363 INFO L78 Accepts]: Start accepts. Automaton has 25717 states and 34375 transitions. Word has length 73 [2020-12-22 16:15:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:00,364 INFO L481 AbstractCegarLoop]: Abstraction has 25717 states and 34375 transitions. [2020-12-22 16:15:00,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:15:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 25717 states and 34375 transitions. [2020-12-22 16:15:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 16:15:00,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:15:00,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:15:00,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 16:15:00,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:15:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:15:00,375 INFO L82 PathProgramCache]: Analyzing trace with hash -179454734, now seen corresponding path program 1 times [2020-12-22 16:15:00,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:15:00,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317962958] [2020-12-22 16:15:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:15:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:15:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 16:15:00,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317962958] [2020-12-22 16:15:00,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:15:00,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:15:00,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704199671] [2020-12-22 16:15:00,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:15:00,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:15:00,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:15:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:15:00,978 INFO L87 Difference]: Start difference. First operand 25717 states and 34375 transitions. Second operand 3 states. [2020-12-22 16:15:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:15:04,438 INFO L93 Difference]: Finished difference Result 65766 states and 87969 transitions. [2020-12-22 16:15:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:15:04,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 16:15:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:15:04,700 INFO L225 Difference]: With dead ends: 65766 [2020-12-22 16:15:04,701 INFO L226 Difference]: Without dead ends: 45685 [2020-12-22 16:15:04,772 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 16:15:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45685 states. [2020-12-22 16:15:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45685 to 45683. [2020-12-22 16:15:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45683 states. [2020-12-22 16:15:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45683 states to 45683 states and 61101 transitions. [2020-12-22 16:15:06,378 INFO L78 Accepts]: Start accepts. Automaton has 45683 states and 61101 transitions. Word has length 86 [2020-12-22 16:15:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:06,381 INFO L481 AbstractCegarLoop]: Abstraction has 45683 states and 61101 transitions. [2020-12-22 16:15:06,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:15:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 45683 states and 61101 transitions. [2020-12-22 16:15:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 16:15:06,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:15:06,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:15:06,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 16:15:06,395 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:15:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:15:06,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1459318412, now seen corresponding path program 1 times [2020-12-22 16:15:06,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:15:06,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464378796] [2020-12-22 16:15:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:15:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:15:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 16:15:07,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464378796] [2020-12-22 16:15:07,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:15:07,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:15:07,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217045636] [2020-12-22 16:15:07,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:15:07,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:15:07,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:15:07,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:15:07,336 INFO L87 Difference]: Start difference. First operand 45683 states and 61101 transitions. Second operand 3 states. [2020-12-22 16:15:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:15:10,883 INFO L93 Difference]: Finished difference Result 105700 states and 141425 transitions. [2020-12-22 16:15:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:15:10,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 16:15:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:15:11,014 INFO L225 Difference]: With dead ends: 105700 [2020-12-22 16:15:11,015 INFO L226 Difference]: Without dead ends: 65653 [2020-12-22 16:15:11,113 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 16:15:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65653 states. [2020-12-22 16:15:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65653 to 65644. [2020-12-22 16:15:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65644 states. [2020-12-22 16:15:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65644 states to 65644 states and 87822 transitions. [2020-12-22 16:15:13,413 INFO L78 Accepts]: Start accepts. Automaton has 65644 states and 87822 transitions. Word has length 86 [2020-12-22 16:15:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:13,413 INFO L481 AbstractCegarLoop]: Abstraction has 65644 states and 87822 transitions. [2020-12-22 16:15:13,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:15:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 65644 states and 87822 transitions. [2020-12-22 16:15:13,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 16:15:13,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:15:13,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:15:13,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 16:15:13,426 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:15:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:15:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash -782100417, now seen corresponding path program 1 times [2020-12-22 16:15:13,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:15:13,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89680673] [2020-12-22 16:15:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:15:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:15:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 16:15:14,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89680673] [2020-12-22 16:15:14,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:15:14,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 16:15:14,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469847174] [2020-12-22 16:15:14,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:15:14,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:15:14,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:15:14,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:15:14,341 INFO L87 Difference]: Start difference. First operand 65644 states and 87822 transitions. Second operand 4 states. [2020-12-22 16:15:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:15:16,555 INFO L93 Difference]: Finished difference Result 65644 states and 87822 transitions. [2020-12-22 16:15:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:15:16,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 16:15:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:15:16,654 INFO L225 Difference]: With dead ends: 65644 [2020-12-22 16:15:16,654 INFO L226 Difference]: Without dead ends: 60088 [2020-12-22 16:15:16,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 16:15:16,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60088 states. [2020-12-22 16:15:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60088 to 60088. [2020-12-22 16:15:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60088 states. [2020-12-22 16:15:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60088 states to 60088 states and 80390 transitions. [2020-12-22 16:15:18,536 INFO L78 Accepts]: Start accepts. Automaton has 60088 states and 80390 transitions. Word has length 87 [2020-12-22 16:15:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:18,537 INFO L481 AbstractCegarLoop]: Abstraction has 60088 states and 80390 transitions. [2020-12-22 16:15:18,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:15:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 60088 states and 80390 transitions. [2020-12-22 16:15:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 16:15:18,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:15:18,566 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] [2020-12-22 16:15:18,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 16:15:18,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:15:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:15:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 514365731, now seen corresponding path program 1 times [2020-12-22 16:15:18,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:15:18,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145741147] [2020-12-22 16:15:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:15:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:15:19,195 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 16:15:19,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145741147] [2020-12-22 16:15:19,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:15:19,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:15:19,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563376005] [2020-12-22 16:15:19,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:15:19,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:15:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:15:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:15:19,209 INFO L87 Difference]: Start difference. First operand 60088 states and 80390 transitions. Second operand 3 states. [2020-12-22 16:15:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:15:23,636 INFO L93 Difference]: Finished difference Result 131154 states and 175533 transitions. [2020-12-22 16:15:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:15:23,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 16:15:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:15:23,753 INFO L225 Difference]: With dead ends: 131154 [2020-12-22 16:15:23,754 INFO L226 Difference]: Without dead ends: 76702 [2020-12-22 16:15:23,819 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 16:15:23,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76702 states. [2020-12-22 16:15:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76702 to 76698. [2020-12-22 16:15:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76698 states. [2020-12-22 16:15:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76698 states to 76698 states and 102613 transitions. [2020-12-22 16:15:25,971 INFO L78 Accepts]: Start accepts. Automaton has 76698 states and 102613 transitions. Word has length 105 [2020-12-22 16:15:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:25,972 INFO L481 AbstractCegarLoop]: Abstraction has 76698 states and 102613 transitions. [2020-12-22 16:15:25,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:15:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 76698 states and 102613 transitions. [2020-12-22 16:15:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 16:15:26,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:15:26,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:15:26,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 16:15:26,053 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:15:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:15:26,054 INFO L82 PathProgramCache]: Analyzing trace with hash 435860946, now seen corresponding path program 1 times [2020-12-22 16:15:26,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:15:26,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023258726] [2020-12-22 16:15:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:15:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:15:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 16:15:26,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023258726] [2020-12-22 16:15:26,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:15:26,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:15:26,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210183505] [2020-12-22 16:15:26,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:15:26,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:15:26,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:15:26,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:15:26,743 INFO L87 Difference]: Start difference. First operand 76698 states and 102613 transitions. Second operand 3 states. [2020-12-22 16:15:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:15:31,023 INFO L93 Difference]: Finished difference Result 164362 states and 219955 transitions. [2020-12-22 16:15:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:15:31,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 16:15:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:15:31,135 INFO L225 Difference]: With dead ends: 164362 [2020-12-22 16:15:31,135 INFO L226 Difference]: Without dead ends: 87785 [2020-12-22 16:15:31,213 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 16:15:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87785 states. [2020-12-22 16:15:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87785 to 87781. [2020-12-22 16:15:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87781 states. [2020-12-22 16:15:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87781 states to 87781 states and 117437 transitions. [2020-12-22 16:15:33,429 INFO L78 Accepts]: Start accepts. Automaton has 87781 states and 117437 transitions. Word has length 142 [2020-12-22 16:15:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:33,430 INFO L481 AbstractCegarLoop]: Abstraction has 87781 states and 117437 transitions. [2020-12-22 16:15:33,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:15:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 87781 states and 117437 transitions. [2020-12-22 16:15:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 16:15:33,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:15:33,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:15:33,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 16:15:33,473 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:15:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:15:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1137460820, now seen corresponding path program 1 times [2020-12-22 16:15:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:15:33,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793454084] [2020-12-22 16:15:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:15:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:15:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 16:15:34,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793454084] [2020-12-22 16:15:34,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:15:34,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 16:15:34,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544814342] [2020-12-22 16:15:34,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:15:34,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:15:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:15:34,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:15:34,453 INFO L87 Difference]: Start difference. First operand 87781 states and 117437 transitions. Second operand 4 states. [2020-12-22 16:15:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:15:38,465 INFO L93 Difference]: Finished difference Result 169921 states and 227349 transitions. [2020-12-22 16:15:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:15:38,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-12-22 16:15:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:15:38,467 INFO L225 Difference]: With dead ends: 169921 [2020-12-22 16:15:38,467 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 16:15:38,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 16:15:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 16:15:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 16:15:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 16:15:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 16:15:38,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2020-12-22 16:15:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:15:38,600 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 16:15:38,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:15:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 16:15:38,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 16:15:38,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 16:15:38,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 16:15:39,203 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 3