/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--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:07:56,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:07:56,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:07:56,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:07:56,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:07:56,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:07:56,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:07:56,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:07:56,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:07:56,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:07:56,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:07:56,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:07:56,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:07:56,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:07:56,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:07:56,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:07:56,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:07:56,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:07:56,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:07:56,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:07:56,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:07:56,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:07:56,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:07:56,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:07:56,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:07:56,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:07:56,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:07:56,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:07:56,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:07:56,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:07:56,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:07:56,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:07:56,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:07:56,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:07:56,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:07:56,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:07:56,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:07:56,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:07:56,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:07:56,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:07:56,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:07:56,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:07:56,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:07:56,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:07:56,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:07:56,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:07:56,531 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:07:56,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:07:56,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:07:56,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:07:56,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:07:56,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:07:56,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:07:56,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:07:56,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:07:56,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:07:56,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:07:56,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:07:56,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:07:56,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:07:56,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:07:56,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:07:56,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:07:56,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:07:56,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:07:56,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:07:56,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:07:56,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:07:56,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:07:57,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:07:57,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:07:57,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:07:57,034 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:07:57,036 INFO L432 ainManager$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--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2020-12-22 13:07:57,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868ba7c7d/4eba28b74a6b4709acebf40086404ec4/FLAG569c4a54b [2020-12-22 13:07:58,173 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:07:58,174 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--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2020-12-22 13:07:58,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868ba7c7d/4eba28b74a6b4709acebf40086404ec4/FLAG569c4a54b [2020-12-22 13:07:58,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868ba7c7d/4eba28b74a6b4709acebf40086404ec4 [2020-12-22 13:07:58,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:07:58,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:07:58,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:07:58,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:07:58,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:07:58,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:58" (1/1) ... [2020-12-22 13:07:58,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfb7541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:58, skipping insertion in model container [2020-12-22 13:07:58,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:58" (1/1) ... [2020-12-22 13:07:58,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:07:58,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:07:59,406 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2020-12-22 13:08:00,102 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2020-12-22 13:08:01,150 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:08:01,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:08:01,262 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:08:01,495 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2020-12-22 13:08:01,527 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--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2020-12-22 13:08:02,008 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:08:02,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:08:02,410 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:08:02,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02 WrapperNode [2020-12-22 13:08:02,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:08:02,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:08:02,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:08:02,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:08:02,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:02,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:03,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:08:03,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:08:03,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:08:03,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:08:03,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:03,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:03,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:03,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:03,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:03,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:04,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... [2020-12-22 13:08:04,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:08:04,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:08:04,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:08:04,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:08:04,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:08:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:08:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:08:04,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:08:04,238 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2020-12-22 13:08:04,239 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2020-12-22 13:08:04,239 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2020-12-22 13:08:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2020-12-22 13:08:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2020-12-22 13:08:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2020-12-22 13:08:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2020-12-22 13:08:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2020-12-22 13:08:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2020-12-22 13:08:04,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2020-12-22 13:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2020-12-22 13:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2020-12-22 13:08:04,243 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2020-12-22 13:08:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2020-12-22 13:08:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2020-12-22 13:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2020-12-22 13:08:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2020-12-22 13:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2020-12-22 13:08:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2020-12-22 13:08:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2020-12-22 13:08:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2020-12-22 13:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2020-12-22 13:08:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2020-12-22 13:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2020-12-22 13:08:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2020-12-22 13:08:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:08:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2020-12-22 13:08:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2020-12-22 13:08:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2020-12-22 13:08:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2020-12-22 13:08:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2020-12-22 13:08:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2020-12-22 13:08:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2020-12-22 13:08:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2020-12-22 13:08:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:08:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2020-12-22 13:08:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2020-12-22 13:08:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:08:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:08:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:08:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:08:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:08:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:08:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:08:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:08:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:08:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:08:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:08:24,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:08:24,768 INFO L299 CfgBuilder]: Removed 2394 assume(true) statements. [2020-12-22 13:08:24,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:08:24 BoogieIcfgContainer [2020-12-22 13:08:24,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:08:24,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:08:24,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:08:24,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:08:24,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:07:58" (1/3) ... [2020-12-22 13:08:24,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671e8023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:08:24, skipping insertion in model container [2020-12-22 13:08:24,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:02" (2/3) ... [2020-12-22 13:08:24,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671e8023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:08:24, skipping insertion in model container [2020-12-22 13:08:24,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:08:24" (3/3) ... [2020-12-22 13:08:24,784 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2020-12-22 13:08:24,791 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:08:24,798 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:08:24,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:08:24,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:08:24,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:08:24,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:08:24,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:08:24,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:08:24,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:08:24,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:08:24,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:08:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states. [2020-12-22 13:08:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 13:08:24,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:24,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:24,958 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 13:08:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:24,972 INFO L82 PathProgramCache]: Analyzing trace with hash 645787444, now seen corresponding path program 1 times [2020-12-22 13:08:24,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:24,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661354114] [2020-12-22 13:08:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:25,815 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 13:08:25,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661354114] [2020-12-22 13:08:25,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:25,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:08:25,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926550239] [2020-12-22 13:08:25,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:25,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:25,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:08:25,842 INFO L87 Difference]: Start difference. First operand 3337 states. Second operand 3 states. [2020-12-22 13:08:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:26,348 INFO L93 Difference]: Finished difference Result 6671 states and 9764 transitions. [2020-12-22 13:08:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:08:26,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 13:08:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:26,400 INFO L225 Difference]: With dead ends: 6671 [2020-12-22 13:08:26,400 INFO L226 Difference]: Without dead ends: 3328 [2020-12-22 13:08:26,427 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 13:08:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2020-12-22 13:08:26,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 3328. [2020-12-22 13:08:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3328 states. [2020-12-22 13:08:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4645 transitions. [2020-12-22 13:08:26,801 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4645 transitions. Word has length 97 [2020-12-22 13:08:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:26,802 INFO L481 AbstractCegarLoop]: Abstraction has 3328 states and 4645 transitions. [2020-12-22 13:08:26,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4645 transitions. [2020-12-22 13:08:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:08:26,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:26,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:26,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:08:26,808 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 13:08:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -817902440, now seen corresponding path program 1 times [2020-12-22 13:08:26,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:26,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593012273] [2020-12-22 13:08:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:08:27,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593012273] [2020-12-22 13:08:27,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:27,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:08:27,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116896531] [2020-12-22 13:08:27,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:27,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:27,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:08:27,227 INFO L87 Difference]: Start difference. First operand 3328 states and 4645 transitions. Second operand 3 states. [2020-12-22 13:08:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:29,698 INFO L93 Difference]: Finished difference Result 9506 states and 13365 transitions. [2020-12-22 13:08:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:08:29,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 13:08:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:29,745 INFO L225 Difference]: With dead ends: 9506 [2020-12-22 13:08:29,746 INFO L226 Difference]: Without dead ends: 6387 [2020-12-22 13:08:29,760 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 13:08:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2020-12-22 13:08:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 6387. [2020-12-22 13:08:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6387 states. [2020-12-22 13:08:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 8968 transitions. [2020-12-22 13:08:30,009 INFO L78 Accepts]: Start accepts. Automaton has 6387 states and 8968 transitions. Word has length 99 [2020-12-22 13:08:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:30,010 INFO L481 AbstractCegarLoop]: Abstraction has 6387 states and 8968 transitions. [2020-12-22 13:08:30,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6387 states and 8968 transitions. [2020-12-22 13:08:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 13:08:30,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:30,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:30,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:08:30,019 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 13:08:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:30,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1990048497, now seen corresponding path program 1 times [2020-12-22 13:08:30,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:30,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061730720] [2020-12-22 13:08:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:08:30,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061730720] [2020-12-22 13:08:30,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:30,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:08:30,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861307035] [2020-12-22 13:08:30,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:08:30,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:30,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:08:30,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:08:30,418 INFO L87 Difference]: Start difference. First operand 6387 states and 8968 transitions. Second operand 4 states. [2020-12-22 13:08:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:31,183 INFO L93 Difference]: Finished difference Result 12564 states and 17683 transitions. [2020-12-22 13:08:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:08:31,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-12-22 13:08:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:31,231 INFO L225 Difference]: With dead ends: 12564 [2020-12-22 13:08:31,232 INFO L226 Difference]: Without dead ends: 6386 [2020-12-22 13:08:31,255 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 13:08:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2020-12-22 13:08:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 6386. [2020-12-22 13:08:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6386 states. [2020-12-22 13:08:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 8964 transitions. [2020-12-22 13:08:31,540 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 8964 transitions. Word has length 102 [2020-12-22 13:08:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:31,542 INFO L481 AbstractCegarLoop]: Abstraction has 6386 states and 8964 transitions. [2020-12-22 13:08:31,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:08:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 8964 transitions. [2020-12-22 13:08:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 13:08:31,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:31,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:31,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:08:31,558 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 13:08:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:31,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1053729046, now seen corresponding path program 1 times [2020-12-22 13:08:31,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:31,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559121096] [2020-12-22 13:08:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:08:32,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559121096] [2020-12-22 13:08:32,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706778038] [2020-12-22 13:08:32,205 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 13:08:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:33,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 3135 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:08:33,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:08:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:08:34,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:08:34,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:08:34,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494386743] [2020-12-22 13:08:34,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:08:34,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:08:34,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:08:34,170 INFO L87 Difference]: Start difference. First operand 6386 states and 8964 transitions. Second operand 6 states. [2020-12-22 13:08:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:35,083 INFO L93 Difference]: Finished difference Result 12637 states and 17822 transitions. [2020-12-22 13:08:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:08:35,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-12-22 13:08:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:35,126 INFO L225 Difference]: With dead ends: 12637 [2020-12-22 13:08:35,126 INFO L226 Difference]: Without dead ends: 6456 [2020-12-22 13:08:35,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:08:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-12-22 13:08:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 6456. [2020-12-22 13:08:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6456 states. [2020-12-22 13:08:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 9034 transitions. [2020-12-22 13:08:35,439 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 9034 transitions. Word has length 128 [2020-12-22 13:08:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:35,439 INFO L481 AbstractCegarLoop]: Abstraction has 6456 states and 9034 transitions. [2020-12-22 13:08:35,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:08:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 9034 transitions. [2020-12-22 13:08:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 13:08:35,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:35,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:35,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:35,662 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 13:08:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:35,665 INFO L82 PathProgramCache]: Analyzing trace with hash 875029562, now seen corresponding path program 2 times [2020-12-22 13:08:35,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:35,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343356596] [2020-12-22 13:08:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:08:36,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343356596] [2020-12-22 13:08:36,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105590376] [2020-12-22 13:08:36,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 13:08:46,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:08:46,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:08:46,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:08:46,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:08:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:08:46,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:08:46,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2020-12-22 13:08:46,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221145767] [2020-12-22 13:08:46,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:46,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:46,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:46,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:08:46,708 INFO L87 Difference]: Start difference. First operand 6456 states and 9034 transitions. Second operand 3 states. [2020-12-22 13:08:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:47,325 INFO L93 Difference]: Finished difference Result 18944 states and 27099 transitions. [2020-12-22 13:08:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:08:47,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-22 13:08:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:47,432 INFO L225 Difference]: With dead ends: 18944 [2020-12-22 13:08:47,432 INFO L226 Difference]: Without dead ends: 12699 [2020-12-22 13:08:47,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:08:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12699 states. [2020-12-22 13:08:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12699 to 12687. [2020-12-22 13:08:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12687 states. [2020-12-22 13:08:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12687 states to 12687 states and 18042 transitions. [2020-12-22 13:08:48,179 INFO L78 Accepts]: Start accepts. Automaton has 12687 states and 18042 transitions. Word has length 130 [2020-12-22 13:08:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:48,179 INFO L481 AbstractCegarLoop]: Abstraction has 12687 states and 18042 transitions. [2020-12-22 13:08:48,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 12687 states and 18042 transitions. [2020-12-22 13:08:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 13:08:48,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:48,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:48,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:48,402 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 13:08:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:48,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1356121310, now seen corresponding path program 1 times [2020-12-22 13:08:48,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:48,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567636846] [2020-12-22 13:08:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:08:48,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567636846] [2020-12-22 13:08:48,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002021169] [2020-12-22 13:08:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:50,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 3149 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:08:50,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:08:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:08:50,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:08:50,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:08:50,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816083792] [2020-12-22 13:08:50,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:08:50,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:50,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:08:50,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:08:50,466 INFO L87 Difference]: Start difference. First operand 12687 states and 18042 transitions. Second operand 8 states. [2020-12-22 13:08:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:51,598 INFO L93 Difference]: Finished difference Result 25238 states and 35977 transitions. [2020-12-22 13:08:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:08:51,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-12-22 13:08:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:51,659 INFO L225 Difference]: With dead ends: 25238 [2020-12-22 13:08:51,660 INFO L226 Difference]: Without dead ends: 12757 [2020-12-22 13:08:51,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:08:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12757 states. [2020-12-22 13:08:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12757 to 12757. [2020-12-22 13:08:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12757 states. [2020-12-22 13:08:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12757 states to 12757 states and 18112 transitions. [2020-12-22 13:08:52,167 INFO L78 Accepts]: Start accepts. Automaton has 12757 states and 18112 transitions. Word has length 131 [2020-12-22 13:08:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:52,167 INFO L481 AbstractCegarLoop]: Abstraction has 12757 states and 18112 transitions. [2020-12-22 13:08:52,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:08:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12757 states and 18112 transitions. [2020-12-22 13:08:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 13:08:52,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:52,173 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:52,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:52,388 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 13:08:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1398778434, now seen corresponding path program 2 times [2020-12-22 13:08:52,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:52,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018081264] [2020-12-22 13:08:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:08:52,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018081264] [2020-12-22 13:08:52,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679529513] [2020-12-22 13:08:52,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:54,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:08:54,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:08:54,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:08:54,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:08:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:08:54,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:08:54,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-12-22 13:08:54,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260661843] [2020-12-22 13:08:54,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:08:54,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:54,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:08:54,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:08:54,959 INFO L87 Difference]: Start difference. First operand 12757 states and 18112 transitions. Second operand 4 states. [2020-12-22 13:08:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:56,716 INFO L93 Difference]: Finished difference Result 12767 states and 18122 transitions. [2020-12-22 13:08:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:08:56,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-22 13:08:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:56,774 INFO L225 Difference]: With dead ends: 12767 [2020-12-22 13:08:56,774 INFO L226 Difference]: Without dead ends: 12765 [2020-12-22 13:08:56,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:08:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12765 states. [2020-12-22 13:08:57,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12765 to 12755. [2020-12-22 13:08:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12755 states. [2020-12-22 13:08:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12755 states to 12755 states and 18110 transitions. [2020-12-22 13:08:57,293 INFO L78 Accepts]: Start accepts. Automaton has 12755 states and 18110 transitions. Word has length 133 [2020-12-22 13:08:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:57,294 INFO L481 AbstractCegarLoop]: Abstraction has 12755 states and 18110 transitions. [2020-12-22 13:08:57,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:08:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12755 states and 18110 transitions. [2020-12-22 13:08:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 13:08:57,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:57,299 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:57,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:08:57,514 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 13:08:57,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:57,515 INFO L82 PathProgramCache]: Analyzing trace with hash 412467168, now seen corresponding path program 1 times [2020-12-22 13:08:57,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:57,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185630461] [2020-12-22 13:08:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:08:58,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185630461] [2020-12-22 13:08:58,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:58,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:08:58,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784384303] [2020-12-22 13:08:58,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:58,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:58,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:58,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:08:58,134 INFO L87 Difference]: Start difference. First operand 12755 states and 18110 transitions. Second operand 3 states. [2020-12-22 13:08:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:08:58,554 INFO L93 Difference]: Finished difference Result 12755 states and 18110 transitions. [2020-12-22 13:08:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:08:58,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 13:08:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:08:58,605 INFO L225 Difference]: With dead ends: 12755 [2020-12-22 13:08:58,605 INFO L226 Difference]: Without dead ends: 12753 [2020-12-22 13:08:58,612 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 13:08:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12753 states. [2020-12-22 13:08:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12753 to 12753. [2020-12-22 13:08:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12753 states. [2020-12-22 13:08:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12753 states to 12753 states and 18108 transitions. [2020-12-22 13:08:59,220 INFO L78 Accepts]: Start accepts. Automaton has 12753 states and 18108 transitions. Word has length 134 [2020-12-22 13:08:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:08:59,221 INFO L481 AbstractCegarLoop]: Abstraction has 12753 states and 18108 transitions. [2020-12-22 13:08:59,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:08:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 12753 states and 18108 transitions. [2020-12-22 13:08:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 13:08:59,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:08:59,227 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:08:59,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:08:59,227 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 13:08:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:08:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash -98410996, now seen corresponding path program 1 times [2020-12-22 13:08:59,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:08:59,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799381379] [2020-12-22 13:08:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:08:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:08:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:08:59,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799381379] [2020-12-22 13:08:59,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:08:59,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:08:59,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710485730] [2020-12-22 13:08:59,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:08:59,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:08:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:08:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:08:59,634 INFO L87 Difference]: Start difference. First operand 12753 states and 18108 transitions. Second operand 3 states. [2020-12-22 13:09:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:00,081 INFO L93 Difference]: Finished difference Result 12753 states and 18108 transitions. [2020-12-22 13:09:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:00,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-12-22 13:09:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:00,138 INFO L225 Difference]: With dead ends: 12753 [2020-12-22 13:09:00,138 INFO L226 Difference]: Without dead ends: 12751 [2020-12-22 13:09:00,148 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 13:09:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2020-12-22 13:09:00,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 12751. [2020-12-22 13:09:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12751 states. [2020-12-22 13:09:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12751 states to 12751 states and 18106 transitions. [2020-12-22 13:09:00,781 INFO L78 Accepts]: Start accepts. Automaton has 12751 states and 18106 transitions. Word has length 135 [2020-12-22 13:09:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:00,781 INFO L481 AbstractCegarLoop]: Abstraction has 12751 states and 18106 transitions. [2020-12-22 13:09:00,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 12751 states and 18106 transitions. [2020-12-22 13:09:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 13:09:00,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:00,788 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:00,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:09:00,788 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 13:09:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1244235114, now seen corresponding path program 1 times [2020-12-22 13:09:00,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:00,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157683570] [2020-12-22 13:09:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 13:09:01,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157683570] [2020-12-22 13:09:01,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:01,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:09:01,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291810685] [2020-12-22 13:09:01,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:01,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:01,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:01,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:01,197 INFO L87 Difference]: Start difference. First operand 12751 states and 18106 transitions. Second operand 3 states. [2020-12-22 13:09:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:01,763 INFO L93 Difference]: Finished difference Result 12751 states and 18106 transitions. [2020-12-22 13:09:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:01,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-22 13:09:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:01,823 INFO L225 Difference]: With dead ends: 12751 [2020-12-22 13:09:01,824 INFO L226 Difference]: Without dead ends: 12743 [2020-12-22 13:09:01,832 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 13:09:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12743 states. [2020-12-22 13:09:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12743 to 12743. [2020-12-22 13:09:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12743 states. [2020-12-22 13:09:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12743 states to 12743 states and 18097 transitions. [2020-12-22 13:09:02,529 INFO L78 Accepts]: Start accepts. Automaton has 12743 states and 18097 transitions. Word has length 136 [2020-12-22 13:09:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:02,530 INFO L481 AbstractCegarLoop]: Abstraction has 12743 states and 18097 transitions. [2020-12-22 13:09:02,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12743 states and 18097 transitions. [2020-12-22 13:09:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 13:09:02,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:02,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:02,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:09:02,574 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 13:09:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash -54958201, now seen corresponding path program 1 times [2020-12-22 13:09:02,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:02,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794166632] [2020-12-22 13:09:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-12-22 13:09:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:03,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-12-22 13:09:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 13:09:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 13:09:03,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794166632] [2020-12-22 13:09:03,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:03,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:09:03,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975447090] [2020-12-22 13:09:03,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:09:03,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:09:03,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:09:03,302 INFO L87 Difference]: Start difference. First operand 12743 states and 18097 transitions. Second operand 5 states. [2020-12-22 13:09:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:20,330 INFO L93 Difference]: Finished difference Result 25929 states and 37481 transitions. [2020-12-22 13:09:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:09:20,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-12-22 13:09:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:20,394 INFO L225 Difference]: With dead ends: 25929 [2020-12-22 13:09:20,394 INFO L226 Difference]: Without dead ends: 13399 [2020-12-22 13:09:20,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:09:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13399 states. [2020-12-22 13:09:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13399 to 13335. [2020-12-22 13:09:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13335 states. [2020-12-22 13:09:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13335 states to 13335 states and 18279 transitions. [2020-12-22 13:09:21,216 INFO L78 Accepts]: Start accepts. Automaton has 13335 states and 18279 transitions. Word has length 225 [2020-12-22 13:09:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:21,217 INFO L481 AbstractCegarLoop]: Abstraction has 13335 states and 18279 transitions. [2020-12-22 13:09:21,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:09:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13335 states and 18279 transitions. [2020-12-22 13:09:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 13:09:21,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:21,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:21,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:09:21,268 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 13:09:21,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:21,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2079797559, now seen corresponding path program 1 times [2020-12-22 13:09:21,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:21,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996971533] [2020-12-22 13:09:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-12-22 13:09:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-12-22 13:09:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 13:09:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:09:21,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996971533] [2020-12-22 13:09:21,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953288613] [2020-12-22 13:09:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:09:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:23,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 3763 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 13:09:23,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:09:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:09:23,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:09:23,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-12-22 13:09:23,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572712545] [2020-12-22 13:09:23,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 13:09:23,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:23,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 13:09:23,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:09:23,878 INFO L87 Difference]: Start difference. First operand 13335 states and 18279 transitions. Second operand 11 states. [2020-12-22 13:09:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:35,557 INFO L93 Difference]: Finished difference Result 26597 states and 36562 transitions. [2020-12-22 13:09:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:09:35,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 225 [2020-12-22 13:09:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:35,616 INFO L225 Difference]: With dead ends: 26597 [2020-12-22 13:09:35,616 INFO L226 Difference]: Without dead ends: 13469 [2020-12-22 13:09:35,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:09:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13469 states. [2020-12-22 13:09:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13469 to 13405. [2020-12-22 13:09:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13405 states. [2020-12-22 13:09:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 18349 transitions. [2020-12-22 13:09:36,298 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 18349 transitions. Word has length 225 [2020-12-22 13:09:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:36,298 INFO L481 AbstractCegarLoop]: Abstraction has 13405 states and 18349 transitions. [2020-12-22 13:09:36,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 13:09:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 18349 transitions. [2020-12-22 13:09:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-12-22 13:09:36,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:36,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:36,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 13:09:36,557 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 13:09:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:36,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1321410779, now seen corresponding path program 2 times [2020-12-22 13:09:36,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:36,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153597615] [2020-12-22 13:09:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:37,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-12-22 13:09:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-12-22 13:09:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 13:09:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:09:37,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153597615] [2020-12-22 13:09:37,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:37,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:09:37,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174152408] [2020-12-22 13:09:37,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:09:37,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:37,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:09:37,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:09:37,238 INFO L87 Difference]: Start difference. First operand 13405 states and 18349 transitions. Second operand 4 states. [2020-12-22 13:09:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:47,797 INFO L93 Difference]: Finished difference Result 26763 states and 37401 transitions. [2020-12-22 13:09:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:09:47,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2020-12-22 13:09:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:47,854 INFO L225 Difference]: With dead ends: 26763 [2020-12-22 13:09:47,854 INFO L226 Difference]: Without dead ends: 13573 [2020-12-22 13:09:47,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:09:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13573 states. [2020-12-22 13:09:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13573 to 13409. [2020-12-22 13:09:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13409 states. [2020-12-22 13:09:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13409 states to 13409 states and 18353 transitions. [2020-12-22 13:09:48,567 INFO L78 Accepts]: Start accepts. Automaton has 13409 states and 18353 transitions. Word has length 227 [2020-12-22 13:09:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:48,568 INFO L481 AbstractCegarLoop]: Abstraction has 13409 states and 18353 transitions. [2020-12-22 13:09:48,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:09:48,568 INFO L276 IsEmpty]: Start isEmpty. Operand 13409 states and 18353 transitions. [2020-12-22 13:09:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 13:09:48,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:48,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:48,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:09:48,603 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 13:09:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash -253907802, now seen corresponding path program 1 times [2020-12-22 13:09:48,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:48,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984483636] [2020-12-22 13:09:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-12-22 13:09:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:49,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-12-22 13:09:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 13:09:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:09:49,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984483636] [2020-12-22 13:09:49,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:49,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:09:49,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907632188] [2020-12-22 13:09:49,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:09:49,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:09:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:09:49,436 INFO L87 Difference]: Start difference. First operand 13409 states and 18353 transitions. Second operand 5 states. [2020-12-22 13:10:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:01,682 INFO L93 Difference]: Finished difference Result 26847 states and 37439 transitions. [2020-12-22 13:10:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:10:01,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-12-22 13:10:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:01,736 INFO L225 Difference]: With dead ends: 26847 [2020-12-22 13:10:01,736 INFO L226 Difference]: Without dead ends: 13653 [2020-12-22 13:10:01,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:10:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13653 states. [2020-12-22 13:10:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13653 to 13409. [2020-12-22 13:10:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13409 states. [2020-12-22 13:10:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13409 states to 13409 states and 18349 transitions. [2020-12-22 13:10:02,464 INFO L78 Accepts]: Start accepts. Automaton has 13409 states and 18349 transitions. Word has length 229 [2020-12-22 13:10:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:02,465 INFO L481 AbstractCegarLoop]: Abstraction has 13409 states and 18349 transitions. [2020-12-22 13:10:02,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:10:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13409 states and 18349 transitions. [2020-12-22 13:10:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-12-22 13:10:02,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:02,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:10:02,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:10:02,495 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 13:10:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:02,496 INFO L82 PathProgramCache]: Analyzing trace with hash -689956894, now seen corresponding path program 1 times [2020-12-22 13:10:02,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:02,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414946656] [2020-12-22 13:10:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-12-22 13:10:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-12-22 13:10:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-22 13:10:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:10:03,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414946656] [2020-12-22 13:10:03,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:03,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 13:10:03,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829835414] [2020-12-22 13:10:03,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 13:10:03,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:03,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 13:10:03,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:10:03,973 INFO L87 Difference]: Start difference. First operand 13409 states and 18349 transitions. Second operand 15 states.