/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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 17:21:17,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 17:21:17,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 17:21:17,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 17:21:17,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 17:21:17,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 17:21:17,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 17:21:17,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 17:21:17,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 17:21:17,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 17:21:17,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 17:21:17,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 17:21:17,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 17:21:17,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 17:21:17,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 17:21:17,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 17:21:17,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 17:21:17,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 17:21:17,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 17:21:17,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 17:21:17,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 17:21:17,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 17:21:17,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 17:21:17,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 17:21:17,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 17:21:17,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 17:21:17,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 17:21:17,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 17:21:17,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 17:21:17,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 17:21:17,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 17:21:17,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 17:21:17,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 17:21:17,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 17:21:17,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 17:21:17,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 17:21:17,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 17:21:17,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 17:21:17,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 17:21:17,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 17:21:17,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 17:21:17,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 17:21:17,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 17:21:17,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 17:21:17,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 17:21:17,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 17:21:17,807 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 17:21:17,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 17:21:17,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 17:21:17,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 17:21:17,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 17:21:17,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 17:21:17,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 17:21:17,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 17:21:17,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 17:21:17,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 17:21:17,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 17:21:17,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 17:21:17,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 17:21:17,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 17:21:17,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 17:21:17,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 17:21:17,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 17:21:17,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 17:21:17,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 17:21:17,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 17:21:17,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 17:21:17,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 17:21:18,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 17:21:18,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 17:21:18,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 17:21:18,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 17:21:18,220 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 17:21:18,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2020-12-22 17:21:18,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa857620/d522a83fe649456d81fe41353cbaa0ce/FLAGa6fbb9a87 [2020-12-22 17:21:19,626 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 17:21:19,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2020-12-22 17:21:19,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa857620/d522a83fe649456d81fe41353cbaa0ce/FLAGa6fbb9a87 [2020-12-22 17:21:19,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa857620/d522a83fe649456d81fe41353cbaa0ce [2020-12-22 17:21:19,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 17:21:19,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 17:21:19,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 17:21:19,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 17:21:19,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 17:21:19,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:21:19" (1/1) ... [2020-12-22 17:21:19,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c237b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:19, skipping insertion in model container [2020-12-22 17:21:19,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:21:19" (1/1) ... [2020-12-22 17:21:19,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 17:21:20,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 17:21:27,106 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582586,582599] [2020-12-22 17:21:27,120 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582733,582746] [2020-12-22 17:21:27,121 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582872,582885] [2020-12-22 17:21:27,125 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[583030,583043] [2020-12-22 17:21:27,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 17:21:27,304 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 17:21:28,179 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582586,582599] [2020-12-22 17:21:28,180 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582733,582746] [2020-12-22 17:21:28,181 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582872,582885] [2020-12-22 17:21:28,181 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[583030,583043] [2020-12-22 17:21:28,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 17:21:29,524 INFO L208 MainTranslator]: Completed translation [2020-12-22 17:21:29,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29 WrapperNode [2020-12-22 17:21:29,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 17:21:29,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 17:21:29,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 17:21:29,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 17:21:29,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:29,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:36,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 17:21:36,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 17:21:36,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 17:21:36,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 17:21:36,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:36,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:37,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:37,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:39,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:40,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:41,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (1/1) ... [2020-12-22 17:21:42,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 17:21:42,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 17:21:42,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 17:21:42,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 17:21:42,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (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 17:21:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 17:21:42,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 17:21:42,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 17:21:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 17:21:42,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 17:21:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 17:21:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 17:21:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 17:21:42,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 17:21:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 17:21:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 17:21:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 17:21:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 17:21:42,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 17:21:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 17:21:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 17:21:42,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 17:23:59,799 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 17:23:59,800 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2020-12-22 17:23:59,800 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2020-12-22 17:23:59,801 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 17:23:59,801 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,801 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,801 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,801 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,802 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,802 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,802 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,802 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2020-12-22 17:23:59,802 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#3: ldv_switch_3_#res := 0; [2020-12-22 17:23:59,804 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2020-12-22 17:23:59,807 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 17:23:59,808 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 17:23:59,816 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2020-12-22 17:23:59,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 17:23:59,936 INFO L299 CfgBuilder]: Removed 28551 assume(true) statements. [2020-12-22 17:23:59,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:23:59 BoogieIcfgContainer [2020-12-22 17:23:59,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 17:23:59,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 17:23:59,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 17:23:59,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 17:23:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:21:19" (1/3) ... [2020-12-22 17:23:59,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26781661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:23:59, skipping insertion in model container [2020-12-22 17:23:59,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:21:29" (2/3) ... [2020-12-22 17:23:59,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26781661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:23:59, skipping insertion in model container [2020-12-22 17:23:59,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:23:59" (3/3) ... [2020-12-22 17:23:59,967 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2020-12-22 17:23:59,974 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 17:23:59,988 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 17:24:00,014 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 17:24:00,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 17:24:00,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 17:24:00,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 17:24:00,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 17:24:00,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 17:24:00,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 17:24:00,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 17:24:00,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 17:24:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22715 states. [2020-12-22 17:24:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 17:24:00,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:24:00,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:00,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:24:00,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:24:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1426199353, now seen corresponding path program 1 times [2020-12-22 17:24:00,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:24:00,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785464656] [2020-12-22 17:24:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:24:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:24:02,284 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 17:24:02,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785464656] [2020-12-22 17:24:02,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:24:02,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:24:02,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097466073] [2020-12-22 17:24:02,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:24:02,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:24:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:24:02,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:24:02,327 INFO L87 Difference]: Start difference. First operand 22715 states. Second operand 3 states. [2020-12-22 17:24:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:24:06,599 INFO L93 Difference]: Finished difference Result 66415 states and 83645 transitions. [2020-12-22 17:24:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:24:06,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-12-22 17:24:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:24:06,838 INFO L225 Difference]: With dead ends: 66415 [2020-12-22 17:24:06,838 INFO L226 Difference]: Without dead ends: 43589 [2020-12-22 17:24:06,896 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 17:24:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43589 states. [2020-12-22 17:24:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43589 to 43587. [2020-12-22 17:24:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43587 states. [2020-12-22 17:24:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43587 states to 43587 states and 53517 transitions. [2020-12-22 17:24:08,524 INFO L78 Accepts]: Start accepts. Automaton has 43587 states and 53517 transitions. Word has length 193 [2020-12-22 17:24:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:24:08,530 INFO L481 AbstractCegarLoop]: Abstraction has 43587 states and 53517 transitions. [2020-12-22 17:24:08,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:24:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 43587 states and 53517 transitions. [2020-12-22 17:24:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 17:24:08,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:24:08,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:08,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 17:24:08,550 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:24:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:24:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1940522864, now seen corresponding path program 1 times [2020-12-22 17:24:08,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:24:08,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693710493] [2020-12-22 17:24:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:24:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:24:09,787 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 17:24:09,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693710493] [2020-12-22 17:24:09,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:24:09,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:24:09,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553545618] [2020-12-22 17:24:09,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:24:09,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:24:09,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:24:09,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:24:09,795 INFO L87 Difference]: Start difference. First operand 43587 states and 53517 transitions. Second operand 3 states. [2020-12-22 17:24:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:24:13,472 INFO L93 Difference]: Finished difference Result 76987 states and 94762 transitions. [2020-12-22 17:24:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:24:13,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 17:24:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:24:13,555 INFO L225 Difference]: With dead ends: 76987 [2020-12-22 17:24:13,556 INFO L226 Difference]: Without dead ends: 33868 [2020-12-22 17:24:13,620 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 17:24:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33868 states. [2020-12-22 17:24:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33868 to 33846. [2020-12-22 17:24:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33846 states. [2020-12-22 17:24:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33846 states to 33846 states and 41718 transitions. [2020-12-22 17:24:14,765 INFO L78 Accepts]: Start accepts. Automaton has 33846 states and 41718 transitions. Word has length 215 [2020-12-22 17:24:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:24:14,766 INFO L481 AbstractCegarLoop]: Abstraction has 33846 states and 41718 transitions. [2020-12-22 17:24:14,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:24:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 33846 states and 41718 transitions. [2020-12-22 17:24:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 17:24:14,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:24:14,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:14,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 17:24:14,774 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:24:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:24:14,774 INFO L82 PathProgramCache]: Analyzing trace with hash 713337572, now seen corresponding path program 1 times [2020-12-22 17:24:14,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:24:14,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7572980] [2020-12-22 17:24:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:24:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:24:15,678 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 17:24:15,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7572980] [2020-12-22 17:24:15,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:24:15,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:24:15,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850717019] [2020-12-22 17:24:15,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:24:15,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:24:15,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:24:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:24:15,686 INFO L87 Difference]: Start difference. First operand 33846 states and 41718 transitions. Second operand 3 states. [2020-12-22 17:24:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:24:19,471 INFO L93 Difference]: Finished difference Result 88731 states and 109358 transitions. [2020-12-22 17:24:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:24:19,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 17:24:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:24:19,638 INFO L225 Difference]: With dead ends: 88731 [2020-12-22 17:24:19,638 INFO L226 Difference]: Without dead ends: 61201 [2020-12-22 17:24:19,721 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 17:24:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61201 states. [2020-12-22 17:24:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61201 to 61191. [2020-12-22 17:24:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61191 states. [2020-12-22 17:24:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61191 states to 61191 states and 75416 transitions. [2020-12-22 17:24:21,505 INFO L78 Accepts]: Start accepts. Automaton has 61191 states and 75416 transitions. Word has length 217 [2020-12-22 17:24:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:24:21,506 INFO L481 AbstractCegarLoop]: Abstraction has 61191 states and 75416 transitions. [2020-12-22 17:24:21,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:24:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 61191 states and 75416 transitions. [2020-12-22 17:24:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 17:24:21,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:24:21,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:21,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 17:24:21,514 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:24:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:24:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1734405926, now seen corresponding path program 1 times [2020-12-22 17:24:21,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:24:21,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654275844] [2020-12-22 17:24:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:24:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:24:22,701 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 17:24:22,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654275844] [2020-12-22 17:24:22,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:24:22,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:24:22,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662704137] [2020-12-22 17:24:22,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:24:22,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:24:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:24:22,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:24:22,706 INFO L87 Difference]: Start difference. First operand 61191 states and 75416 transitions. Second operand 3 states. [2020-12-22 17:24:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:24:26,638 INFO L93 Difference]: Finished difference Result 143419 states and 176750 transitions. [2020-12-22 17:24:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:24:26,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 17:24:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:24:26,867 INFO L225 Difference]: With dead ends: 143419 [2020-12-22 17:24:26,867 INFO L226 Difference]: Without dead ends: 88544 [2020-12-22 17:24:26,949 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 17:24:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88544 states. [2020-12-22 17:24:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88544 to 88542. [2020-12-22 17:24:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88542 states. [2020-12-22 17:24:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88542 states to 88542 states and 109120 transitions. [2020-12-22 17:24:29,080 INFO L78 Accepts]: Start accepts. Automaton has 88542 states and 109120 transitions. Word has length 217 [2020-12-22 17:24:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:24:29,081 INFO L481 AbstractCegarLoop]: Abstraction has 88542 states and 109120 transitions. [2020-12-22 17:24:29,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:24:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 88542 states and 109120 transitions. [2020-12-22 17:24:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 17:24:29,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:24:29,089 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:29,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 17:24:29,089 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:24:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:24:29,090 INFO L82 PathProgramCache]: Analyzing trace with hash -691670711, now seen corresponding path program 1 times [2020-12-22 17:24:29,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:24:29,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796942988] [2020-12-22 17:24:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:24:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:24:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 17:24:30,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796942988] [2020-12-22 17:24:30,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:24:30,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 17:24:30,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128922760] [2020-12-22 17:24:30,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:24:30,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:24:30,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:24:30,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:24:30,562 INFO L87 Difference]: Start difference. First operand 88542 states and 109120 transitions. Second operand 4 states. [2020-12-22 17:24:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:24:33,087 INFO L93 Difference]: Finished difference Result 88542 states and 109120 transitions. [2020-12-22 17:24:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 17:24:33,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-12-22 17:24:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:24:33,258 INFO L225 Difference]: With dead ends: 88542 [2020-12-22 17:24:33,258 INFO L226 Difference]: Without dead ends: 82664 [2020-12-22 17:24:33,302 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 17:24:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82664 states. [2020-12-22 17:24:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82664 to 82664. [2020-12-22 17:24:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82664 states. [2020-12-22 17:24:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82664 states to 82664 states and 101810 transitions. [2020-12-22 17:24:35,878 INFO L78 Accepts]: Start accepts. Automaton has 82664 states and 101810 transitions. Word has length 218 [2020-12-22 17:24:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:24:35,878 INFO L481 AbstractCegarLoop]: Abstraction has 82664 states and 101810 transitions. [2020-12-22 17:24:35,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:24:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 82664 states and 101810 transitions. [2020-12-22 17:24:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-12-22 17:24:35,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:24:35,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:35,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 17:24:35,911 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:24:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:24:35,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1765282162, now seen corresponding path program 1 times [2020-12-22 17:24:35,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:24:35,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278137171] [2020-12-22 17:24:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:24:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:24:36,754 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 17:24:36,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278137171] [2020-12-22 17:24:36,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:24:36,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 17:24:36,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69551630] [2020-12-22 17:24:36,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 17:24:36,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:24:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 17:24:36,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 17:24:36,766 INFO L87 Difference]: Start difference. First operand 82664 states and 101810 transitions. Second operand 6 states.