/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:07:14,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:07:14,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:07:14,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:07:14,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:07:14,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:07:14,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:07:14,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:07:14,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:07:14,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:07:14,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:07:14,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:07:14,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:07:14,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:07:14,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:07:14,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:07:14,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:07:14,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:07:14,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:07:14,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:07:14,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:07:14,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:07:14,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:07:14,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:07:14,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:07:14,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:07:14,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:07:14,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:07:14,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:07:14,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:07:14,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:07:14,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:07:14,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:07:14,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:07:14,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:07:14,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:07:14,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:07:14,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:07:14,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:07:14,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:07:14,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:07:14,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:07:14,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:07:14,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:07:14,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:07:14,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:07:14,847 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:07:14,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:07:14,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:07:14,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:07:14,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:07:14,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:07:14,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:07:14,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:07:14,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:07:14,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:07:14,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:07:14,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:07:14,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:07:14,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:07:14,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:07:14,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:07:14,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:07:14,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:07:14,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:07:14,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:07:14,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:07:14,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:07:15,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:07:15,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:07:15,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:07:15,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:07:15,371 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:07:15,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2020-12-22 13:07:15,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f37a75f/bd327508ed0342b4b438a96dc2d6133b/FLAGc89078fb6 [2020-12-22 13:07:16,718 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:07:16,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2020-12-22 13:07:16,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f37a75f/bd327508ed0342b4b438a96dc2d6133b/FLAGc89078fb6 [2020-12-22 13:07:17,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f37a75f/bd327508ed0342b4b438a96dc2d6133b [2020-12-22 13:07:17,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:07:17,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:07:17,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:07:17,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:07:17,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:07:17,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:17" (1/1) ... [2020-12-22 13:07:17,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483abbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:17, skipping insertion in model container [2020-12-22 13:07:17,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:17" (1/1) ... [2020-12-22 13:07:17,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:07:17,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:07:18,259 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2020-12-22 13:07:19,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:07:19,788 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:07:20,022 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2020-12-22 13:07:20,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:07:20,697 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:07:20,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20 WrapperNode [2020-12-22 13:07:20,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:07:20,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:07:20,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:07:20,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:07:20,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:20,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:07:21,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:07:21,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:07:21,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:07:21,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (1/1) ... [2020-12-22 13:07:21,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:07:21,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:07:21,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:07:21,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:07:21,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (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 13:07:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2020-12-22 13:07:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2020-12-22 13:07:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2020-12-22 13:07:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2020-12-22 13:07:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:07:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:07:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:07:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:07:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2020-12-22 13:07:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2020-12-22 13:07:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2020-12-22 13:07:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2020-12-22 13:07:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2020-12-22 13:07:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2020-12-22 13:07:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2020-12-22 13:07:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2020-12-22 13:07:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2020-12-22 13:07:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2020-12-22 13:07:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2020-12-22 13:07:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2020-12-22 13:07:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2020-12-22 13:07:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2020-12-22 13:07:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2020-12-22 13:07:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2020-12-22 13:07:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2020-12-22 13:07:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2020-12-22 13:07:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2020-12-22 13:07:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2020-12-22 13:07:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2020-12-22 13:07:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2020-12-22 13:07:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:07:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2020-12-22 13:07:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2020-12-22 13:07:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2020-12-22 13:07:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2020-12-22 13:07:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2020-12-22 13:07:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2020-12-22 13:07:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2020-12-22 13:07:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2020-12-22 13:07:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2020-12-22 13:07:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2020-12-22 13:07:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2020-12-22 13:07:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2020-12-22 13:07:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2020-12-22 13:07:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2020-12-22 13:07:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:07:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2020-12-22 13:07:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2020-12-22 13:07:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2020-12-22 13:07:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2020-12-22 13:07:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:07:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2020-12-22 13:07:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2020-12-22 13:07:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:07:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2020-12-22 13:07:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2020-12-22 13:07:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2020-12-22 13:07:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2020-12-22 13:07:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2020-12-22 13:07:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2020-12-22 13:07:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2020-12-22 13:07:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2020-12-22 13:07:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2020-12-22 13:07:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2020-12-22 13:07:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2020-12-22 13:07:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2020-12-22 13:07:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2020-12-22 13:07:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2020-12-22 13:07:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2020-12-22 13:07:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2020-12-22 13:07:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2020-12-22 13:07:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2020-12-22 13:07:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:07:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2020-12-22 13:07:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2020-12-22 13:07:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:07:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:07:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2020-12-22 13:07:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2020-12-22 13:07:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2020-12-22 13:07:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2020-12-22 13:07:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2020-12-22 13:07:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2020-12-22 13:07:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2020-12-22 13:07:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2020-12-22 13:07:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:07:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2020-12-22 13:07:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2020-12-22 13:07:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:07:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2020-12-22 13:07:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2020-12-22 13:07:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:07:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:07:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:07:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2020-12-22 13:07:21,814 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2020-12-22 13:07:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2020-12-22 13:07:21,814 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2020-12-22 13:07:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2020-12-22 13:07:21,814 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2020-12-22 13:07:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2020-12-22 13:07:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2020-12-22 13:07:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2020-12-22 13:07:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2020-12-22 13:07:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2020-12-22 13:07:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2020-12-22 13:07:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2020-12-22 13:07:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2020-12-22 13:07:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2020-12-22 13:07:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2020-12-22 13:07:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2020-12-22 13:07:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2020-12-22 13:07:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2020-12-22 13:07:21,817 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2020-12-22 13:07:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:07:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:07:21,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:07:47,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:07:47,171 INFO L299 CfgBuilder]: Removed 929 assume(true) statements. [2020-12-22 13:07:47,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:47 BoogieIcfgContainer [2020-12-22 13:07:47,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:07:47,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:07:47,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:07:47,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:07:47,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:07:17" (1/3) ... [2020-12-22 13:07:47,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4750ca6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:47, skipping insertion in model container [2020-12-22 13:07:47,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:20" (2/3) ... [2020-12-22 13:07:47,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4750ca6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:47, skipping insertion in model container [2020-12-22 13:07:47,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:47" (3/3) ... [2020-12-22 13:07:47,192 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2020-12-22 13:07:47,200 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:07:47,209 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:07:47,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:07:47,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:07:47,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:07:47,303 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:07:47,304 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:07:47,304 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:07:47,304 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:07:47,308 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:07:47,309 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:07:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states. [2020-12-22 13:07:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 13:07:47,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:47,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:07:47,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1160909501, now seen corresponding path program 1 times [2020-12-22 13:07:47,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:47,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322294263] [2020-12-22 13:07:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:48,468 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 13:07:48,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322294263] [2020-12-22 13:07:48,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:48,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:48,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029729186] [2020-12-22 13:07:48,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:48,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:48,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:48,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:48,497 INFO L87 Difference]: Start difference. First operand 1442 states. Second operand 3 states. [2020-12-22 13:07:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:51,118 INFO L93 Difference]: Finished difference Result 4262 states and 6171 transitions. [2020-12-22 13:07:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:51,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 13:07:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:51,178 INFO L225 Difference]: With dead ends: 4262 [2020-12-22 13:07:51,179 INFO L226 Difference]: Without dead ends: 2807 [2020-12-22 13:07:51,199 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 13:07:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2020-12-22 13:07:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2807. [2020-12-22 13:07:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2020-12-22 13:07:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3840 transitions. [2020-12-22 13:07:51,485 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3840 transitions. Word has length 17 [2020-12-22 13:07:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:51,485 INFO L481 AbstractCegarLoop]: Abstraction has 2807 states and 3840 transitions. [2020-12-22 13:07:51,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3840 transitions. [2020-12-22 13:07:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 13:07:51,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:51,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:07:51,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:07:51,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:51,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1148775864, now seen corresponding path program 1 times [2020-12-22 13:07:51,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:51,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004193631] [2020-12-22 13:07:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:52,016 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 13:07:52,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004193631] [2020-12-22 13:07:52,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:52,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:52,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857713383] [2020-12-22 13:07:52,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:52,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:52,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:52,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:52,020 INFO L87 Difference]: Start difference. First operand 2807 states and 3840 transitions. Second operand 3 states. [2020-12-22 13:07:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:52,277 INFO L93 Difference]: Finished difference Result 2837 states and 3868 transitions. [2020-12-22 13:07:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:52,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 13:07:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:52,298 INFO L225 Difference]: With dead ends: 2837 [2020-12-22 13:07:52,298 INFO L226 Difference]: Without dead ends: 2822 [2020-12-22 13:07:52,301 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 13:07:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-12-22 13:07:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2807. [2020-12-22 13:07:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2020-12-22 13:07:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3839 transitions. [2020-12-22 13:07:52,433 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3839 transitions. Word has length 23 [2020-12-22 13:07:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:52,433 INFO L481 AbstractCegarLoop]: Abstraction has 2807 states and 3839 transitions. [2020-12-22 13:07:52,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3839 transitions. [2020-12-22 13:07:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 13:07:52,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:52,435 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] [2020-12-22 13:07:52,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:07:52,436 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:52,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1148835446, now seen corresponding path program 1 times [2020-12-22 13:07:52,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:52,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976776896] [2020-12-22 13:07:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:53,431 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 13:07:53,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976776896] [2020-12-22 13:07:53,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:53,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:07:53,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340011680] [2020-12-22 13:07:53,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:53,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:53,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:53,436 INFO L87 Difference]: Start difference. First operand 2807 states and 3839 transitions. Second operand 3 states. [2020-12-22 13:07:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:54,216 INFO L93 Difference]: Finished difference Result 8403 states and 12146 transitions. [2020-12-22 13:07:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:54,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 13:07:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:54,265 INFO L225 Difference]: With dead ends: 8403 [2020-12-22 13:07:54,265 INFO L226 Difference]: Without dead ends: 5604 [2020-12-22 13:07:54,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2020-12-22 13:07:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5592. [2020-12-22 13:07:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2020-12-22 13:07:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7818 transitions. [2020-12-22 13:07:54,581 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7818 transitions. Word has length 23 [2020-12-22 13:07:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:54,582 INFO L481 AbstractCegarLoop]: Abstraction has 5592 states and 7818 transitions. [2020-12-22 13:07:54,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7818 transitions. [2020-12-22 13:07:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 13:07:54,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:54,584 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] [2020-12-22 13:07:54,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:07:54,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1254163039, now seen corresponding path program 1 times [2020-12-22 13:07:54,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:54,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250517587] [2020-12-22 13:07:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:55,283 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 13:07:55,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250517587] [2020-12-22 13:07:55,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:55,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:07:55,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639428126] [2020-12-22 13:07:55,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:55,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:55,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:55,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:55,293 INFO L87 Difference]: Start difference. First operand 5592 states and 7818 transitions. Second operand 3 states. [2020-12-22 13:07:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:55,519 INFO L93 Difference]: Finished difference Result 5592 states and 7818 transitions. [2020-12-22 13:07:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:55,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 13:07:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:55,573 INFO L225 Difference]: With dead ends: 5592 [2020-12-22 13:07:55,574 INFO L226 Difference]: Without dead ends: 5590 [2020-12-22 13:07:55,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2020-12-22 13:07:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5590. [2020-12-22 13:07:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5590 states. [2020-12-22 13:07:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7816 transitions. [2020-12-22 13:07:55,909 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7816 transitions. Word has length 24 [2020-12-22 13:07:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:55,910 INFO L481 AbstractCegarLoop]: Abstraction has 5590 states and 7816 transitions. [2020-12-22 13:07:55,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7816 transitions. [2020-12-22 13:07:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 13:07:55,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:55,915 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] [2020-12-22 13:07:55,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:07:55,916 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:55,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:55,917 INFO L82 PathProgramCache]: Analyzing trace with hash 224351136, now seen corresponding path program 1 times [2020-12-22 13:07:55,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:55,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525794490] [2020-12-22 13:07:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:56,321 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 13:07:56,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525794490] [2020-12-22 13:07:56,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:56,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:07:56,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076147417] [2020-12-22 13:07:56,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:56,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:56,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:56,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:56,331 INFO L87 Difference]: Start difference. First operand 5590 states and 7816 transitions. Second operand 3 states. [2020-12-22 13:07:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:56,562 INFO L93 Difference]: Finished difference Result 5590 states and 7816 transitions. [2020-12-22 13:07:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:56,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 13:07:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:56,607 INFO L225 Difference]: With dead ends: 5590 [2020-12-22 13:07:56,608 INFO L226 Difference]: Without dead ends: 5588 [2020-12-22 13:07:56,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2020-12-22 13:07:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5588. [2020-12-22 13:07:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5588 states. [2020-12-22 13:07:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 7814 transitions. [2020-12-22 13:07:57,110 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 7814 transitions. Word has length 25 [2020-12-22 13:07:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:57,110 INFO L481 AbstractCegarLoop]: Abstraction has 5588 states and 7814 transitions. [2020-12-22 13:07:57,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 7814 transitions. [2020-12-22 13:07:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 13:07:57,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:57,113 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] [2020-12-22 13:07:57,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:07:57,113 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:57,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1635046775, now seen corresponding path program 1 times [2020-12-22 13:07:57,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:57,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327657946] [2020-12-22 13:07:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:57,477 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 13:07:57,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327657946] [2020-12-22 13:07:57,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:57,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:07:57,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855985977] [2020-12-22 13:07:57,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:57,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:57,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:57,480 INFO L87 Difference]: Start difference. First operand 5588 states and 7814 transitions. Second operand 3 states. [2020-12-22 13:07:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:57,726 INFO L93 Difference]: Finished difference Result 5588 states and 7814 transitions. [2020-12-22 13:07:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:57,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 13:07:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:57,781 INFO L225 Difference]: With dead ends: 5588 [2020-12-22 13:07:57,781 INFO L226 Difference]: Without dead ends: 5586 [2020-12-22 13:07:57,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2020-12-22 13:07:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5586. [2020-12-22 13:07:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5586 states. [2020-12-22 13:07:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7812 transitions. [2020-12-22 13:07:58,136 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7812 transitions. Word has length 26 [2020-12-22 13:07:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:58,139 INFO L481 AbstractCegarLoop]: Abstraction has 5586 states and 7812 transitions. [2020-12-22 13:07:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7812 transitions. [2020-12-22 13:07:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 13:07:58,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:58,143 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] [2020-12-22 13:07:58,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:07:58,143 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:58,144 INFO L82 PathProgramCache]: Analyzing trace with hash 853160138, now seen corresponding path program 1 times [2020-12-22 13:07:58,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:58,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325086091] [2020-12-22 13:07:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:58,487 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 13:07:58,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325086091] [2020-12-22 13:07:58,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:58,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:07:58,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014881631] [2020-12-22 13:07:58,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:58,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:58,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:58,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:58,490 INFO L87 Difference]: Start difference. First operand 5586 states and 7812 transitions. Second operand 3 states. [2020-12-22 13:07:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:58,736 INFO L93 Difference]: Finished difference Result 5586 states and 7812 transitions. [2020-12-22 13:07:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:58,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 13:07:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:58,791 INFO L225 Difference]: With dead ends: 5586 [2020-12-22 13:07:58,791 INFO L226 Difference]: Without dead ends: 5575 [2020-12-22 13:07:58,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2020-12-22 13:07:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5575. [2020-12-22 13:07:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5575 states. [2020-12-22 13:07:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 7799 transitions. [2020-12-22 13:07:59,126 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 7799 transitions. Word has length 27 [2020-12-22 13:07:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:59,128 INFO L481 AbstractCegarLoop]: Abstraction has 5575 states and 7799 transitions. [2020-12-22 13:07:59,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 7799 transitions. [2020-12-22 13:07:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 13:07:59,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:59,139 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:07:59,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:07:59,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:59,141 INFO L82 PathProgramCache]: Analyzing trace with hash -848641613, now seen corresponding path program 1 times [2020-12-22 13:07:59,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:59,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592070067] [2020-12-22 13:07:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:59,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592070067] [2020-12-22 13:07:59,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:59,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:59,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029444020] [2020-12-22 13:07:59,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:59,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:59,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:59,454 INFO L87 Difference]: Start difference. First operand 5575 states and 7799 transitions. Second operand 3 states. [2020-12-22 13:07:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:59,959 INFO L93 Difference]: Finished difference Result 11226 states and 15706 transitions. [2020-12-22 13:07:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:59,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 13:07:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:59,998 INFO L225 Difference]: With dead ends: 11226 [2020-12-22 13:07:59,998 INFO L226 Difference]: Without dead ends: 5659 [2020-12-22 13:08:00,028 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 13:08:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2020-12-22 13:08:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5653. [2020-12-22 13:08:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5653 states. [2020-12-22 13:08:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 7907 transitions. [2020-12-22 13:08:00,510 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 7907 transitions. Word has length 68 [2020-12-22 13:08:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:00,510 INFO L481 AbstractCegarLoop]: Abstraction has 5653 states and 7907 transitions. [2020-12-22 13:08:00,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 7907 transitions. [2020-12-22 13:08:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 13:08:00,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:00,519 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:00,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:08:00,520 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash 381165906, now seen corresponding path program 1 times [2020-12-22 13:08:00,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:00,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719779345] [2020-12-22 13:08:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:08:00,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719779345] [2020-12-22 13:08:00,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:00,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:08:00,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155390931] [2020-12-22 13:08:00,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:00,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:00,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:08:00,961 INFO L87 Difference]: Start difference. First operand 5653 states and 7907 transitions. Second operand 3 states. [2020-12-22 13:08:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:01,378 INFO L93 Difference]: Finished difference Result 11314 states and 15829 transitions. [2020-12-22 13:08:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:08:01,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 13:08:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:01,413 INFO L225 Difference]: With dead ends: 11314 [2020-12-22 13:08:01,413 INFO L226 Difference]: Without dead ends: 5669 [2020-12-22 13:08:01,440 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 13:08:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2020-12-22 13:08:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5661. [2020-12-22 13:08:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5661 states. [2020-12-22 13:08:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 7915 transitions. [2020-12-22 13:08:01,785 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 7915 transitions. Word has length 83 [2020-12-22 13:08:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:01,787 INFO L481 AbstractCegarLoop]: Abstraction has 5661 states and 7915 transitions. [2020-12-22 13:08:01,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 7915 transitions. [2020-12-22 13:08:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:08:01,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:01,796 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:01,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:08:01,797 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:01,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1712946834, now seen corresponding path program 1 times [2020-12-22 13:08:01,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:01,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403121671] [2020-12-22 13:08:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:08:02,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403121671] [2020-12-22 13:08:02,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915750499] [2020-12-22 13:08:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:04,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3910 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:08:04,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:08:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:08:04,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:08:04,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:08:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100908384] [2020-12-22 13:08:04,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:08:04,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:08:04,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:08:04,919 INFO L87 Difference]: Start difference. First operand 5661 states and 7915 transitions. Second operand 5 states. [2020-12-22 13:08:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:05,592 INFO L93 Difference]: Finished difference Result 11330 states and 15845 transitions. [2020-12-22 13:08:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:08:05,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 13:08:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:05,627 INFO L225 Difference]: With dead ends: 11330 [2020-12-22 13:08:05,627 INFO L226 Difference]: Without dead ends: 5677 [2020-12-22 13:08:05,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:08:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2020-12-22 13:08:05,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5677. [2020-12-22 13:08:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5677 states. [2020-12-22 13:08:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7931 transitions. [2020-12-22 13:08:06,029 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7931 transitions. Word has length 85 [2020-12-22 13:08:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:06,030 INFO L481 AbstractCegarLoop]: Abstraction has 5677 states and 7931 transitions. [2020-12-22 13:08:06,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:08:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7931 transitions. [2020-12-22 13:08:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 13:08:06,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:06,039 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:06,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:08:06,253 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash 184371850, now seen corresponding path program 2 times [2020-12-22 13:08:06,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:06,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130471534] [2020-12-22 13:08:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:06,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130471534] [2020-12-22 13:08:06,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:06,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:08:06,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507614926] [2020-12-22 13:08:06,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:08:06,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:06,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:08:06,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:08:06,684 INFO L87 Difference]: Start difference. First operand 5677 states and 7931 transitions. Second operand 4 states. [2020-12-22 13:08:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:09,561 INFO L93 Difference]: Finished difference Result 17023 states and 23783 transitions. [2020-12-22 13:08:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:08:09,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 13:08:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:09,631 INFO L225 Difference]: With dead ends: 17023 [2020-12-22 13:08:09,631 INFO L226 Difference]: Without dead ends: 11354 [2020-12-22 13:08:09,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:08:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2020-12-22 13:08:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 5685. [2020-12-22 13:08:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-12-22 13:08:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7939 transitions. [2020-12-22 13:08:10,148 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7939 transitions. Word has length 87 [2020-12-22 13:08:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:10,150 INFO L481 AbstractCegarLoop]: Abstraction has 5685 states and 7939 transitions. [2020-12-22 13:08:10,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:08:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7939 transitions. [2020-12-22 13:08:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 13:08:10,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:10,165 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:10,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:08:10,165 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -402434164, now seen corresponding path program 1 times [2020-12-22 13:08:10,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:10,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176640612] [2020-12-22 13:08:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:10,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176640612] [2020-12-22 13:08:10,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:10,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:08:10,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593085160] [2020-12-22 13:08:10,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:08:10,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:10,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:08:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:08:10,750 INFO L87 Difference]: Start difference. First operand 5685 states and 7939 transitions. Second operand 4 states. [2020-12-22 13:08:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:11,725 INFO L93 Difference]: Finished difference Result 13355 states and 18527 transitions. [2020-12-22 13:08:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:08:11,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 13:08:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:11,767 INFO L225 Difference]: With dead ends: 13355 [2020-12-22 13:08:11,767 INFO L226 Difference]: Without dead ends: 7670 [2020-12-22 13:08:11,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 13:08:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7670 states. [2020-12-22 13:08:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7670 to 5685. [2020-12-22 13:08:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-12-22 13:08:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7935 transitions. [2020-12-22 13:08:12,231 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7935 transitions. Word has length 87 [2020-12-22 13:08:12,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:12,231 INFO L481 AbstractCegarLoop]: Abstraction has 5685 states and 7935 transitions. [2020-12-22 13:08:12,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:08:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7935 transitions. [2020-12-22 13:08:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 13:08:12,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:12,242 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:12,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:08:12,242 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:12,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1875368696, now seen corresponding path program 1 times [2020-12-22 13:08:12,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:12,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234903479] [2020-12-22 13:08:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:12,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234903479] [2020-12-22 13:08:12,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:12,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:08:12,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451692316] [2020-12-22 13:08:12,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:08:12,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:12,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:08:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:08:12,988 INFO L87 Difference]: Start difference. First operand 5685 states and 7935 transitions. Second operand 7 states. [2020-12-22 13:08:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:22,993 INFO L93 Difference]: Finished difference Result 16742 states and 23071 transitions. [2020-12-22 13:08:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:08:22,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-12-22 13:08:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:23,047 INFO L225 Difference]: With dead ends: 16742 [2020-12-22 13:08:23,047 INFO L226 Difference]: Without dead ends: 11065 [2020-12-22 13:08:23,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:08:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2020-12-22 13:08:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 5705. [2020-12-22 13:08:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5705 states. [2020-12-22 13:08:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7955 transitions. [2020-12-22 13:08:23,589 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7955 transitions. Word has length 89 [2020-12-22 13:08:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:23,590 INFO L481 AbstractCegarLoop]: Abstraction has 5705 states and 7955 transitions. [2020-12-22 13:08:23,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:08:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7955 transitions. [2020-12-22 13:08:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 13:08:23,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:23,598 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:23,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:08:23,598 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:23,599 INFO L82 PathProgramCache]: Analyzing trace with hash 445986628, now seen corresponding path program 1 times [2020-12-22 13:08:23,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:23,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54275673] [2020-12-22 13:08:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:24,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54275673] [2020-12-22 13:08:24,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:24,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:08:24,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602964095] [2020-12-22 13:08:24,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:24,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:24,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:08:24,301 INFO L87 Difference]: Start difference. First operand 5705 states and 7955 transitions. Second operand 3 states. [2020-12-22 13:08:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:24,966 INFO L93 Difference]: Finished difference Result 13519 states and 18715 transitions. [2020-12-22 13:08:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:08:24,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 13:08:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:25,005 INFO L225 Difference]: With dead ends: 13519 [2020-12-22 13:08:25,005 INFO L226 Difference]: Without dead ends: 7822 [2020-12-22 13:08:25,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 13:08:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2020-12-22 13:08:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 5709. [2020-12-22 13:08:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5709 states. [2020-12-22 13:08:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 7959 transitions. [2020-12-22 13:08:25,522 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 7959 transitions. Word has length 91 [2020-12-22 13:08:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:25,523 INFO L481 AbstractCegarLoop]: Abstraction has 5709 states and 7959 transitions. [2020-12-22 13:08:25,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 7959 transitions. [2020-12-22 13:08:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 13:08:25,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:25,532 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:25,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:08:25,532 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash -540204671, now seen corresponding path program 1 times [2020-12-22 13:08:25,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:25,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047448221] [2020-12-22 13:08:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:26,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047448221] [2020-12-22 13:08:26,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:26,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:08:26,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413968870] [2020-12-22 13:08:26,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:08:26,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:26,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:08:26,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:08:26,271 INFO L87 Difference]: Start difference. First operand 5709 states and 7959 transitions. Second operand 5 states. [2020-12-22 13:08:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:29,459 INFO L93 Difference]: Finished difference Result 24657 states and 33563 transitions. [2020-12-22 13:08:29,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:08:29,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 13:08:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:29,532 INFO L225 Difference]: With dead ends: 24657 [2020-12-22 13:08:29,532 INFO L226 Difference]: Without dead ends: 18956 [2020-12-22 13:08:29,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:08:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2020-12-22 13:08:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 5721. [2020-12-22 13:08:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5721 states. [2020-12-22 13:08:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 7971 transitions. [2020-12-22 13:08:30,232 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 7971 transitions. Word has length 94 [2020-12-22 13:08:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:30,233 INFO L481 AbstractCegarLoop]: Abstraction has 5721 states and 7971 transitions. [2020-12-22 13:08:30,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:08:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 7971 transitions. [2020-12-22 13:08:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 13:08:30,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:30,242 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:30,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:08:30,242 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:30,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2050509027, now seen corresponding path program 1 times [2020-12-22 13:08:30,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:30,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620102831] [2020-12-22 13:08:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:30,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620102831] [2020-12-22 13:08:30,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:30,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:08:30,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937040212] [2020-12-22 13:08:30,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:08:30,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:30,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:08:30,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:08:30,847 INFO L87 Difference]: Start difference. First operand 5721 states and 7971 transitions. Second operand 5 states. [2020-12-22 13:08:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:33,921 INFO L93 Difference]: Finished difference Result 24745 states and 33699 transitions. [2020-12-22 13:08:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:08:33,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-22 13:08:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:33,999 INFO L225 Difference]: With dead ends: 24745 [2020-12-22 13:08:33,999 INFO L226 Difference]: Without dead ends: 19032 [2020-12-22 13:08:34,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:08:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19032 states. [2020-12-22 13:08:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19032 to 5729. [2020-12-22 13:08:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5729 states. [2020-12-22 13:08:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5729 states to 5729 states and 7979 transitions. [2020-12-22 13:08:34,771 INFO L78 Accepts]: Start accepts. Automaton has 5729 states and 7979 transitions. Word has length 96 [2020-12-22 13:08:34,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:34,772 INFO L481 AbstractCegarLoop]: Abstraction has 5729 states and 7979 transitions. [2020-12-22 13:08:34,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:08:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5729 states and 7979 transitions. [2020-12-22 13:08:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 13:08:34,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:34,782 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:34,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 13:08:34,782 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:34,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1050932583, now seen corresponding path program 1 times [2020-12-22 13:08:34,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:34,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250780560] [2020-12-22 13:08:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:35,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250780560] [2020-12-22 13:08:35,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:35,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:08:35,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285906499] [2020-12-22 13:08:35,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:08:35,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:35,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:08:35,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:08:35,519 INFO L87 Difference]: Start difference. First operand 5729 states and 7979 transitions. Second operand 4 states. [2020-12-22 13:08:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:37,629 INFO L93 Difference]: Finished difference Result 16981 states and 23295 transitions. [2020-12-22 13:08:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:08:37,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 13:08:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:37,679 INFO L225 Difference]: With dead ends: 16981 [2020-12-22 13:08:37,680 INFO L226 Difference]: Without dead ends: 11260 [2020-12-22 13:08:37,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:08:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2020-12-22 13:08:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 5857. [2020-12-22 13:08:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5857 states. [2020-12-22 13:08:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8139 transitions. [2020-12-22 13:08:38,435 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8139 transitions. Word has length 98 [2020-12-22 13:08:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:38,435 INFO L481 AbstractCegarLoop]: Abstraction has 5857 states and 8139 transitions. [2020-12-22 13:08:38,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:08:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8139 transitions. [2020-12-22 13:08:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 13:08:38,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:38,445 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:38,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 13:08:38,445 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2052678435, now seen corresponding path program 1 times [2020-12-22 13:08:38,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:38,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935897944] [2020-12-22 13:08:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935897944] [2020-12-22 13:08:40,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:40,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 13:08:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275234984] [2020-12-22 13:08:40,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:08:40,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:40,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:08:40,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:08:40,146 INFO L87 Difference]: Start difference. First operand 5857 states and 8139 transitions. Second operand 10 states. [2020-12-22 13:08:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:53,882 INFO L93 Difference]: Finished difference Result 22066 states and 30400 transitions. [2020-12-22 13:08:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-22 13:08:53,883 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-12-22 13:08:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:53,946 INFO L225 Difference]: With dead ends: 22066 [2020-12-22 13:08:53,946 INFO L226 Difference]: Without dead ends: 16207 [2020-12-22 13:08:53,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=534, Invalid=1536, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 13:08:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2020-12-22 13:08:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 8778. [2020-12-22 13:08:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8778 states. [2020-12-22 13:08:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8778 states to 8778 states and 12064 transitions. [2020-12-22 13:08:55,043 INFO L78 Accepts]: Start accepts. Automaton has 8778 states and 12064 transitions. Word has length 100 [2020-12-22 13:08:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:55,043 INFO L481 AbstractCegarLoop]: Abstraction has 8778 states and 12064 transitions. [2020-12-22 13:08:55,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:08:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 8778 states and 12064 transitions. [2020-12-22 13:08:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 13:08:55,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:55,065 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:08:55,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 13:08:55,065 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:08:55,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:55,066 INFO L82 PathProgramCache]: Analyzing trace with hash -262262845, now seen corresponding path program 1 times [2020-12-22 13:08:55,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:55,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736337756] [2020-12-22 13:08:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:08:55,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736337756] [2020-12-22 13:08:55,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:55,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:08:55,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315907969] [2020-12-22 13:08:55,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:08:55,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:55,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:08:55,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:08:55,729 INFO L87 Difference]: Start difference. First operand 8778 states and 12064 transitions. Second operand 6 states. [2020-12-22 13:08:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:59,181 INFO L93 Difference]: Finished difference Result 24381 states and 33120 transitions. [2020-12-22 13:08:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:08:59,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-12-22 13:08:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:59,240 INFO L225 Difference]: With dead ends: 24381 [2020-12-22 13:08:59,240 INFO L226 Difference]: Without dead ends: 15611 [2020-12-22 13:08:59,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:08:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15611 states. [2020-12-22 13:09:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15611 to 8714. [2020-12-22 13:09:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8714 states. [2020-12-22 13:09:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8714 states to 8714 states and 11982 transitions. [2020-12-22 13:09:00,342 INFO L78 Accepts]: Start accepts. Automaton has 8714 states and 11982 transitions. Word has length 116 [2020-12-22 13:09:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:00,343 INFO L481 AbstractCegarLoop]: Abstraction has 8714 states and 11982 transitions. [2020-12-22 13:09:00,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:09:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 8714 states and 11982 transitions. [2020-12-22 13:09:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 13:09:00,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:00,357 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:09:00,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 13:09:00,357 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:00,358 INFO L82 PathProgramCache]: Analyzing trace with hash 852425825, now seen corresponding path program 1 times [2020-12-22 13:09:00,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:00,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801202666] [2020-12-22 13:09:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:09:02,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801202666] [2020-12-22 13:09:02,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:02,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 13:09:02,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968014500] [2020-12-22 13:09:02,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:09:02,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:02,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:09:02,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:09:02,236 INFO L87 Difference]: Start difference. First operand 8714 states and 11982 transitions. Second operand 9 states. [2020-12-22 13:09:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:22,077 INFO L93 Difference]: Finished difference Result 37849 states and 50831 transitions. [2020-12-22 13:09:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-22 13:09:22,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 13:09:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:22,183 INFO L225 Difference]: With dead ends: 37849 [2020-12-22 13:09:22,183 INFO L226 Difference]: Without dead ends: 29143 [2020-12-22 13:09:22,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2020-12-22 13:09:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29143 states. [2020-12-22 13:09:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29143 to 8714. [2020-12-22 13:09:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8714 states. [2020-12-22 13:09:23,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8714 states to 8714 states and 11978 transitions. [2020-12-22 13:09:23,664 INFO L78 Accepts]: Start accepts. Automaton has 8714 states and 11978 transitions. Word has length 116 [2020-12-22 13:09:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:23,664 INFO L481 AbstractCegarLoop]: Abstraction has 8714 states and 11978 transitions. [2020-12-22 13:09:23,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:09:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8714 states and 11978 transitions. [2020-12-22 13:09:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 13:09:23,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:23,678 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:09:23,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 13:09:23,679 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash 143688362, now seen corresponding path program 1 times [2020-12-22 13:09:23,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:23,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232431824] [2020-12-22 13:09:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:09:24,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232431824] [2020-12-22 13:09:24,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:24,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:09:24,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955096762] [2020-12-22 13:09:24,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:24,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:24,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:24,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:24,008 INFO L87 Difference]: Start difference. First operand 8714 states and 11978 transitions. Second operand 3 states. [2020-12-22 13:09:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:30,880 INFO L93 Difference]: Finished difference Result 18680 states and 25615 transitions. [2020-12-22 13:09:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:30,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 13:09:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:30,937 INFO L225 Difference]: With dead ends: 18680 [2020-12-22 13:09:30,937 INFO L226 Difference]: Without dead ends: 9974 [2020-12-22 13:09:30,959 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 13:09:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2020-12-22 13:09:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 8786. [2020-12-22 13:09:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8786 states. [2020-12-22 13:09:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 12050 transitions. [2020-12-22 13:09:32,228 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 12050 transitions. Word has length 118 [2020-12-22 13:09:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:32,229 INFO L481 AbstractCegarLoop]: Abstraction has 8786 states and 12050 transitions. [2020-12-22 13:09:32,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 12050 transitions. [2020-12-22 13:09:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 13:09:32,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:32,243 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:09:32,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 13:09:32,243 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:32,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1159778289, now seen corresponding path program 1 times [2020-12-22 13:09:32,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:32,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111969952] [2020-12-22 13:09:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:09:32,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111969952] [2020-12-22 13:09:32,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:32,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:09:32,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616037349] [2020-12-22 13:09:32,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:09:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:09:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:09:32,619 INFO L87 Difference]: Start difference. First operand 8786 states and 12050 transitions. Second operand 4 states. [2020-12-22 13:09:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:34,537 INFO L93 Difference]: Finished difference Result 20844 states and 28390 transitions. [2020-12-22 13:09:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:09:34,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-12-22 13:09:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:34,584 INFO L225 Difference]: With dead ends: 20844 [2020-12-22 13:09:34,584 INFO L226 Difference]: Without dead ends: 12066 [2020-12-22 13:09:34,608 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 13:09:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12066 states. [2020-12-22 13:09:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12066 to 8794. [2020-12-22 13:09:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8794 states. [2020-12-22 13:09:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 12058 transitions. [2020-12-22 13:09:36,064 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 12058 transitions. Word has length 121 [2020-12-22 13:09:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:36,064 INFO L481 AbstractCegarLoop]: Abstraction has 8794 states and 12058 transitions. [2020-12-22 13:09:36,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:09:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 12058 transitions. [2020-12-22 13:09:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 13:09:36,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:36,080 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:09:36,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 13:09:36,080 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash -76519722, now seen corresponding path program 1 times [2020-12-22 13:09:36,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:36,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546977181] [2020-12-22 13:09:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:09:36,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546977181] [2020-12-22 13:09:36,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36328526] [2020-12-22 13:09:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:09:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:38,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 4211 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:09:38,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:09:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:09:39,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:09:39,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-22 13:09:39,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220271920] [2020-12-22 13:09:39,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:09:39,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:39,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:09:39,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:09:39,070 INFO L87 Difference]: Start difference. First operand 8794 states and 12058 transitions. Second operand 4 states. [2020-12-22 13:09:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:40,386 INFO L93 Difference]: Finished difference Result 18970 states and 25954 transitions. [2020-12-22 13:09:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:09:40,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-12-22 13:09:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:40,426 INFO L225 Difference]: With dead ends: 18970 [2020-12-22 13:09:40,426 INFO L226 Difference]: Without dead ends: 10184 [2020-12-22 13:09:40,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:09:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10184 states. [2020-12-22 13:09:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10184 to 8696. [2020-12-22 13:09:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8696 states. [2020-12-22 13:09:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 11922 transitions. [2020-12-22 13:09:41,880 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 11922 transitions. Word has length 122 [2020-12-22 13:09:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:41,881 INFO L481 AbstractCegarLoop]: Abstraction has 8696 states and 11922 transitions. [2020-12-22 13:09:41,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:09:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 11922 transitions. [2020-12-22 13:09:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 13:09:41,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:41,890 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:09:42,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 13:09:42,104 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:42,105 INFO L82 PathProgramCache]: Analyzing trace with hash 851412063, now seen corresponding path program 1 times [2020-12-22 13:09:42,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:42,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138982503] [2020-12-22 13:09:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:50,700 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-12-22 13:09:50,866 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-12-22 13:09:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:09:51,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138982503] [2020-12-22 13:09:51,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:51,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 13:09:51,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944745733] [2020-12-22 13:09:51,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 13:09:51,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:51,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 13:09:51,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:09:51,140 INFO L87 Difference]: Start difference. First operand 8696 states and 11922 transitions. Second operand 12 states. [2020-12-22 13:10:06,151 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-22 13:10:06,500 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 13:10:06,864 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 13:10:07,062 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 13:10:07,215 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-22 13:10:07,588 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 13:10:07,989 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-22 13:10:08,379 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-12-22 13:10:08,861 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 13:10:09,186 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-12-22 13:10:09,557 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-12-22 13:10:09,806 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 13:10:10,317 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-22 13:10:12,720 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-12-22 13:10:12,981 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-12-22 13:10:13,727 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-12-22 13:10:14,061 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-22 13:10:14,226 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-22 13:10:14,651 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 13:10:14,982 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-22 13:10:15,145 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-22 13:10:15,553 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-22 13:10:16,025 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 13:10:16,342 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-22 13:10:16,608 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-22 13:10:20,945 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-12-22 13:10:22,022 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 13:10:23,300 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 13:10:26,153 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-12-22 13:10:26,725 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-12-22 13:10:26,954 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32