/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-wireless-ath-ath10k-ath10k_pci.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 17:24:40,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 17:24:40,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 17:24:40,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 17:24:40,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 17:24:40,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 17:24:40,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 17:24:40,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 17:24:40,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 17:24:40,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 17:24:40,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 17:24:40,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 17:24:40,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 17:24:40,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 17:24:40,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 17:24:40,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 17:24:40,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 17:24:40,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 17:24:40,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 17:24:40,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 17:24:40,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 17:24:40,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 17:24:40,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 17:24:40,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 17:24:40,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 17:24:40,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 17:24:40,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 17:24:40,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 17:24:40,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 17:24:40,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 17:24:40,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 17:24:40,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 17:24:40,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 17:24:40,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 17:24:40,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 17:24:40,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 17:24:40,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 17:24:40,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 17:24:40,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 17:24:40,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 17:24:40,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 17:24:40,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 17:24:40,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 17:24:40,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 17:24:40,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 17:24:40,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 17:24:40,201 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 17:24:40,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 17:24:40,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 17:24:40,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 17:24:40,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 17:24:40,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 17:24:40,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 17:24:40,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 17:24:40,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 17:24:40,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 17:24:40,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 17:24:40,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 17:24:40,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 17:24:40,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 17:24:40,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 17:24:40,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 17:24:40,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 17:24:40,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 17:24:40,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 17:24:40,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 17:24:40,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 17:24:40,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 17:24:40,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 17:24:40,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 17:24:40,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 17:24:40,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 17:24:40,656 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 17:24:40,657 INFO L432 ainManager$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-wireless-ath-ath10k-ath10k_pci.cil.i [2020-12-22 17:24:40,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10089e9cf/401ebe84947d486384c3976ad8a92645/FLAG0cba91beb [2020-12-22 17:24:42,132 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 17:24:42,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2020-12-22 17:24:42,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10089e9cf/401ebe84947d486384c3976ad8a92645/FLAG0cba91beb [2020-12-22 17:24:42,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10089e9cf/401ebe84947d486384c3976ad8a92645 [2020-12-22 17:24:42,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 17:24:42,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 17:24:42,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 17:24:42,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 17:24:42,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 17:24:42,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:24:42" (1/1) ... [2020-12-22 17:24:42,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3049c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:42, skipping insertion in model container [2020-12-22 17:24:42,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:24:42" (1/1) ... [2020-12-22 17:24:42,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 17:24:42,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 17:24:46,447 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-wireless-ath-ath10k-ath10k_pci.cil.i[406186,406199] [2020-12-22 17:24:46,454 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-wireless-ath-ath10k-ath10k_pci.cil.i[406333,406346] [2020-12-22 17:24:46,461 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-wireless-ath-ath10k-ath10k_pci.cil.i[406472,406485] [2020-12-22 17:24:46,463 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-wireless-ath-ath10k-ath10k_pci.cil.i[406630,406643] [2020-12-22 17:24:46,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 17:24:46,542 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 17:24:47,102 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-wireless-ath-ath10k-ath10k_pci.cil.i[406186,406199] [2020-12-22 17:24:47,103 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-wireless-ath-ath10k-ath10k_pci.cil.i[406333,406346] [2020-12-22 17:24:47,104 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-wireless-ath-ath10k-ath10k_pci.cil.i[406472,406485] [2020-12-22 17:24:47,104 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-wireless-ath-ath10k-ath10k_pci.cil.i[406630,406643] [2020-12-22 17:24:47,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 17:24:48,341 INFO L208 MainTranslator]: Completed translation [2020-12-22 17:24:48,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48 WrapperNode [2020-12-22 17:24:48,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 17:24:48,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 17:24:48,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 17:24:48,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 17:24:48,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:48,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:52,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 17:24:52,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 17:24:52,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 17:24:52,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 17:24:52,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:52,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:53,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:53,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:55,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:56,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:56,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (1/1) ... [2020-12-22 17:24:57,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 17:24:57,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 17:24:57,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 17:24:57,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 17:24:57,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (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 17:24:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 17:24:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 17:24:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 17:24:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 17:24:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 17:24:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 17:24:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 17:24:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 17:24:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_access [2020-12-22 17:24:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_access [2020-12-22 17:24:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 17:24:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 17:24:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 17:24:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 17:24:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 17:24:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 17:24:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_mem [2020-12-22 17:24:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_mem [2020-12-22 17:24:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 17:26:10,109 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2020-12-22 17:26:10,110 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 17:26:10,110 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 17:26:10,110 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 17:26:10,111 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2020-12-22 17:26:10,111 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 17:26:10,114 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2020-12-22 17:26:10,119 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 17:26:10,120 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 17:26:10,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 17:26:10,342 INFO L299 CfgBuilder]: Removed 21223 assume(true) statements. [2020-12-22 17:26:10,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:10 BoogieIcfgContainer [2020-12-22 17:26:10,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 17:26:10,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 17:26:10,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 17:26:10,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 17:26:10,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:24:42" (1/3) ... [2020-12-22 17:26:10,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4286cc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:26:10, skipping insertion in model container [2020-12-22 17:26:10,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:24:48" (2/3) ... [2020-12-22 17:26:10,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4286cc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:26:10, skipping insertion in model container [2020-12-22 17:26:10,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:10" (3/3) ... [2020-12-22 17:26:10,369 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2020-12-22 17:26:10,375 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 17:26:10,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 17:26:10,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 17:26:10,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 17:26:10,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 17:26:10,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 17:26:10,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 17:26:10,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 17:26:10,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 17:26:10,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 17:26:10,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 17:26:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 16277 states. [2020-12-22 17:26:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 17:26:10,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:10,685 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] [2020-12-22 17:26:10,685 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:10,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:10,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1125938142, now seen corresponding path program 1 times [2020-12-22 17:26:10,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:10,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535499444] [2020-12-22 17:26:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:11,634 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 17:26:11,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535499444] [2020-12-22 17:26:11,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:11,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:26:11,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397663235] [2020-12-22 17:26:11,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:26:11,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:11,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:26:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:26:11,660 INFO L87 Difference]: Start difference. First operand 16277 states. Second operand 3 states. [2020-12-22 17:26:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:15,658 INFO L93 Difference]: Finished difference Result 48215 states and 63252 transitions. [2020-12-22 17:26:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:26:15,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 17:26:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:15,894 INFO L225 Difference]: With dead ends: 48215 [2020-12-22 17:26:15,895 INFO L226 Difference]: Without dead ends: 31466 [2020-12-22 17:26:15,951 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 17:26:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31466 states. [2020-12-22 17:26:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31466 to 31464. [2020-12-22 17:26:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31464 states. [2020-12-22 17:26:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31464 states to 31464 states and 40496 transitions. [2020-12-22 17:26:17,573 INFO L78 Accepts]: Start accepts. Automaton has 31464 states and 40496 transitions. Word has length 63 [2020-12-22 17:26:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:26:17,575 INFO L481 AbstractCegarLoop]: Abstraction has 31464 states and 40496 transitions. [2020-12-22 17:26:17,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:26:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 31464 states and 40496 transitions. [2020-12-22 17:26:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 17:26:17,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:17,591 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] [2020-12-22 17:26:17,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 17:26:17,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:17,594 INFO L82 PathProgramCache]: Analyzing trace with hash 127215956, now seen corresponding path program 1 times [2020-12-22 17:26:17,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:17,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465621199] [2020-12-22 17:26:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:18,050 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 17:26:18,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465621199] [2020-12-22 17:26:18,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:18,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:26:18,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935013276] [2020-12-22 17:26:18,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:26:18,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:18,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:26:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:26:18,060 INFO L87 Difference]: Start difference. First operand 31464 states and 40496 transitions. Second operand 3 states. [2020-12-22 17:26:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:22,444 INFO L93 Difference]: Finished difference Result 62122 states and 79918 transitions. [2020-12-22 17:26:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:26:22,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 17:26:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:22,540 INFO L225 Difference]: With dead ends: 62122 [2020-12-22 17:26:22,540 INFO L226 Difference]: Without dead ends: 30782 [2020-12-22 17:26:22,601 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 17:26:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30782 states. [2020-12-22 17:26:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30782 to 30760. [2020-12-22 17:26:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30760 states. [2020-12-22 17:26:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30760 states to 30760 states and 39508 transitions. [2020-12-22 17:26:23,790 INFO L78 Accepts]: Start accepts. Automaton has 30760 states and 39508 transitions. Word has length 87 [2020-12-22 17:26:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:26:23,793 INFO L481 AbstractCegarLoop]: Abstraction has 30760 states and 39508 transitions. [2020-12-22 17:26:23,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:26:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 30760 states and 39508 transitions. [2020-12-22 17:26:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 17:26:23,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:23,803 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] [2020-12-22 17:26:23,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 17:26:23,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:23,810 INFO L82 PathProgramCache]: Analyzing trace with hash 315884674, now seen corresponding path program 1 times [2020-12-22 17:26:23,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:23,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131612655] [2020-12-22 17:26:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:24,202 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 17:26:24,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131612655] [2020-12-22 17:26:24,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:24,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:26:24,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356794304] [2020-12-22 17:26:24,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:26:24,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:26:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:26:24,206 INFO L87 Difference]: Start difference. First operand 30760 states and 39508 transitions. Second operand 3 states. [2020-12-22 17:26:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:27,964 INFO L93 Difference]: Finished difference Result 77031 states and 99026 transitions. [2020-12-22 17:26:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:26:27,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 17:26:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:28,292 INFO L225 Difference]: With dead ends: 77031 [2020-12-22 17:26:28,292 INFO L226 Difference]: Without dead ends: 53845 [2020-12-22 17:26:28,369 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 17:26:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53845 states. [2020-12-22 17:26:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53845 to 53843. [2020-12-22 17:26:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53843 states. [2020-12-22 17:26:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53843 states to 53843 states and 69201 transitions. [2020-12-22 17:26:30,177 INFO L78 Accepts]: Start accepts. Automaton has 53843 states and 69201 transitions. Word has length 94 [2020-12-22 17:26:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:26:30,177 INFO L481 AbstractCegarLoop]: Abstraction has 53843 states and 69201 transitions. [2020-12-22 17:26:30,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:26:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 53843 states and 69201 transitions. [2020-12-22 17:26:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 17:26:30,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:30,182 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] [2020-12-22 17:26:30,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 17:26:30,182 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:30,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:30,183 INFO L82 PathProgramCache]: Analyzing trace with hash -963979004, now seen corresponding path program 1 times [2020-12-22 17:26:30,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:30,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021588405] [2020-12-22 17:26:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:30,618 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 17:26:30,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021588405] [2020-12-22 17:26:30,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:30,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:26:30,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908941709] [2020-12-22 17:26:30,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:26:30,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:30,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:26:30,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:26:30,627 INFO L87 Difference]: Start difference. First operand 53843 states and 69201 transitions. Second operand 3 states. [2020-12-22 17:26:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:34,507 INFO L93 Difference]: Finished difference Result 123199 states and 158416 transitions. [2020-12-22 17:26:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:26:34,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 17:26:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:34,815 INFO L225 Difference]: With dead ends: 123199 [2020-12-22 17:26:34,816 INFO L226 Difference]: Without dead ends: 76930 [2020-12-22 17:26:34,895 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 17:26:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76930 states. [2020-12-22 17:26:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76930 to 76921. [2020-12-22 17:26:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76921 states. [2020-12-22 17:26:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76921 states to 76921 states and 98889 transitions. [2020-12-22 17:26:37,467 INFO L78 Accepts]: Start accepts. Automaton has 76921 states and 98889 transitions. Word has length 94 [2020-12-22 17:26:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:26:37,469 INFO L481 AbstractCegarLoop]: Abstraction has 76921 states and 98889 transitions. [2020-12-22 17:26:37,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:26:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 76921 states and 98889 transitions. [2020-12-22 17:26:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 17:26:37,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:37,489 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:26:37,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 17:26:37,490 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:37,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1673251382, now seen corresponding path program 1 times [2020-12-22 17:26:37,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:37,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506489355] [2020-12-22 17:26:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:38,279 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 17:26:38,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506489355] [2020-12-22 17:26:38,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:38,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 17:26:38,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217454656] [2020-12-22 17:26:38,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:26:38,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:38,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:26:38,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:26:38,289 INFO L87 Difference]: Start difference. First operand 76921 states and 98889 transitions. Second operand 4 states. [2020-12-22 17:26:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:40,383 INFO L93 Difference]: Finished difference Result 76921 states and 98889 transitions. [2020-12-22 17:26:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 17:26:40,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 17:26:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:40,682 INFO L225 Difference]: With dead ends: 76921 [2020-12-22 17:26:40,682 INFO L226 Difference]: Without dead ends: 69443 [2020-12-22 17:26:40,732 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 17:26:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69443 states. [2020-12-22 17:26:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69443 to 69443. [2020-12-22 17:26:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69443 states. [2020-12-22 17:26:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69443 states to 69443 states and 89299 transitions. [2020-12-22 17:26:43,300 INFO L78 Accepts]: Start accepts. Automaton has 69443 states and 89299 transitions. Word has length 95 [2020-12-22 17:26:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:26:43,301 INFO L481 AbstractCegarLoop]: Abstraction has 69443 states and 89299 transitions. [2020-12-22 17:26:43,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:26:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 69443 states and 89299 transitions. [2020-12-22 17:26:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 17:26:43,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:43,320 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] [2020-12-22 17:26:43,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 17:26:43,321 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:43,321 INFO L82 PathProgramCache]: Analyzing trace with hash -632003462, now seen corresponding path program 1 times [2020-12-22 17:26:43,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:43,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471647161] [2020-12-22 17:26:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:43,702 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 17:26:43,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471647161] [2020-12-22 17:26:43,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:43,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:26:43,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176928460] [2020-12-22 17:26:43,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:26:43,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:43,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:26:43,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:26:43,705 INFO L87 Difference]: Start difference. First operand 69443 states and 89299 transitions. Second operand 3 states. [2020-12-22 17:26:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:48,391 INFO L93 Difference]: Finished difference Result 153686 states and 197644 transitions. [2020-12-22 17:26:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:26:48,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 17:26:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:48,693 INFO L225 Difference]: With dead ends: 153686 [2020-12-22 17:26:48,694 INFO L226 Difference]: Without dead ends: 91817 [2020-12-22 17:26:48,824 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 17:26:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91817 states. [2020-12-22 17:26:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91817 to 91813. [2020-12-22 17:26:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91813 states. [2020-12-22 17:26:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91813 states to 91813 states and 117991 transitions. [2020-12-22 17:26:52,222 INFO L78 Accepts]: Start accepts. Automaton has 91813 states and 117991 transitions. Word has length 121 [2020-12-22 17:26:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:26:52,223 INFO L481 AbstractCegarLoop]: Abstraction has 91813 states and 117991 transitions. [2020-12-22 17:26:52,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:26:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 91813 states and 117991 transitions. [2020-12-22 17:26:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 17:26:52,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:26:52,285 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, 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] [2020-12-22 17:26:52,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 17:26:52,286 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:26:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:26:52,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1435507654, now seen corresponding path program 1 times [2020-12-22 17:26:52,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:26:52,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523411934] [2020-12-22 17:26:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:26:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:26:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 17:26:52,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523411934] [2020-12-22 17:26:52,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:26:52,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:26:52,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214293346] [2020-12-22 17:26:52,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:26:52,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:26:52,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:26:52,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:26:52,673 INFO L87 Difference]: Start difference. First operand 91813 states and 117991 transitions. Second operand 3 states. [2020-12-22 17:26:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:26:57,713 INFO L93 Difference]: Finished difference Result 198414 states and 255004 transitions. [2020-12-22 17:26:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:26:57,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-12-22 17:26:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:26:58,044 INFO L225 Difference]: With dead ends: 198414 [2020-12-22 17:26:58,045 INFO L226 Difference]: Without dead ends: 106738 [2020-12-22 17:26:58,180 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 17:26:58,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106738 states. [2020-12-22 17:27:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106738 to 106734. [2020-12-22 17:27:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106734 states. [2020-12-22 17:27:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106734 states to 106734 states and 137126 transitions. [2020-12-22 17:27:00,974 INFO L78 Accepts]: Start accepts. Automaton has 106734 states and 137126 transitions. Word has length 160 [2020-12-22 17:27:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:27:00,974 INFO L481 AbstractCegarLoop]: Abstraction has 106734 states and 137126 transitions. [2020-12-22 17:27:00,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:27:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 106734 states and 137126 transitions. [2020-12-22 17:27:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 17:27:01,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:27:01,029 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, 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] [2020-12-22 17:27:01,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 17:27:01,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:27:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:27:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1014092476, now seen corresponding path program 1 times [2020-12-22 17:27:01,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:27:01,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957035504] [2020-12-22 17:27:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:27:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:27:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-22 17:27:01,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957035504] [2020-12-22 17:27:01,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:27:01,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 17:27:01,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744380198] [2020-12-22 17:27:01,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:27:01,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:27:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:27:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:27:01,832 INFO L87 Difference]: Start difference. First operand 106734 states and 137126 transitions. Second operand 4 states. [2020-12-22 17:27:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:27:06,522 INFO L93 Difference]: Finished difference Result 202879 states and 260531 transitions. [2020-12-22 17:27:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 17:27:06,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-12-22 17:27:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:27:06,523 INFO L225 Difference]: With dead ends: 202879 [2020-12-22 17:27:06,523 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 17:27:06,706 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 17:27:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 17:27:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 17:27:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 17:27:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 17:27:06,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-12-22 17:27:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:27:06,708 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 17:27:06,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:27:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 17:27:06,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 17:27:06,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 17:27:06,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.