/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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:59:36,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:59:36,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:59:36,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:59:36,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:59:36,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:59:36,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:59:36,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:59:36,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:59:36,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:59:36,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:59:36,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:59:36,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:59:36,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:59:36,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:59:36,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:59:36,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:59:36,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:59:36,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:59:36,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:59:36,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:59:36,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:59:36,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:59:36,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:59:36,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:59:36,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:59:36,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:59:36,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:59:36,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:59:36,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:59:36,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:59:36,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:59:36,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:59:36,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:59:36,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:59:36,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:59:36,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:59:36,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:59:36,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:59:36,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:59:36,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:59:36,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:59:36,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:59:36,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:59:36,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:59:36,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:59:36,581 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:59:36,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:59:36,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:59:36,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:59:36,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:59:36,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:59:36,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:59:36,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:59:36,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:59:36,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:59:36,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:59:36,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:59:36,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:59:36,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:59:36,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:59:36,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:59:36,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:59:36,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:59:36,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:59:36,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:59:36,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:59:36,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:59:37,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:59:37,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:59:37,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:59:37,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:59:37,105 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:59:37,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2020-12-22 13:59:37,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de38bb9a/14edeca4ee1442298c17c6e17b310bb2/FLAGa2b143f19 [2020-12-22 13:59:38,511 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:59:38,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2020-12-22 13:59:38,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de38bb9a/14edeca4ee1442298c17c6e17b310bb2/FLAGa2b143f19 [2020-12-22 13:59:38,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de38bb9a/14edeca4ee1442298c17c6e17b310bb2 [2020-12-22 13:59:38,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:59:38,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:59:38,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:59:38,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:59:38,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:59:38,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:38" (1/1) ... [2020-12-22 13:59:38,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e2d6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:38, skipping insertion in model container [2020-12-22 13:59:38,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:38" (1/1) ... [2020-12-22 13:59:38,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:59:38,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:59:39,540 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2020-12-22 13:59:41,366 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2020-12-22 13:59:41,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:59:41,462 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:59:41,638 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2020-12-22 13:59:42,322 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2020-12-22 13:59:42,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:59:42,624 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:59:42,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42 WrapperNode [2020-12-22 13:59:42,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:59:42,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:59:42,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:59:42,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:59:42,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:42,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:59:43,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:59:43,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:59:43,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:59:43,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:43,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (1/1) ... [2020-12-22 13:59:44,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:59:44,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:59:44,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:59:44,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:59:44,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (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 13:59:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2020-12-22 13:59:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2020-12-22 13:59:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2020-12-22 13:59:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:59:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:59:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:59:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:59:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:59:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:59:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2020-12-22 13:59:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2020-12-22 13:59:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 13:59:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:59:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:59:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:59:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:59:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:00:35,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:00:35,555 INFO L299 CfgBuilder]: Removed 1922 assume(true) statements. [2020-12-22 14:00:35,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:00:35 BoogieIcfgContainer [2020-12-22 14:00:35,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:00:35,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:00:35,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:00:35,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:00:35,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:59:38" (1/3) ... [2020-12-22 14:00:35,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23940600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:00:35, skipping insertion in model container [2020-12-22 14:00:35,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:42" (2/3) ... [2020-12-22 14:00:35,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23940600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:00:35, skipping insertion in model container [2020-12-22 14:00:35,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:00:35" (3/3) ... [2020-12-22 14:00:35,572 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2020-12-22 14:00:35,581 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:00:35,589 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2020-12-22 14:00:35,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2020-12-22 14:00:35,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:00:35,659 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:00:35,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:00:35,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:00:35,660 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:00:35,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:00:35,660 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:00:35,660 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:00:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states. [2020-12-22 14:00:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 14:00:35,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:35,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:35,741 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:35,748 INFO L82 PathProgramCache]: Analyzing trace with hash 237456437, now seen corresponding path program 1 times [2020-12-22 14:00:35,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:35,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123828503] [2020-12-22 14:00:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:00:36,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123828503] [2020-12-22 14:00:36,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:36,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:00:36,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450591732] [2020-12-22 14:00:36,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:00:36,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:00:36,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:00:36,815 INFO L87 Difference]: Start difference. First operand 2902 states. Second operand 2 states. [2020-12-22 14:00:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:37,082 INFO L93 Difference]: Finished difference Result 5800 states and 9017 transitions. [2020-12-22 14:00:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:00:37,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 14:00:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:37,118 INFO L225 Difference]: With dead ends: 5800 [2020-12-22 14:00:37,118 INFO L226 Difference]: Without dead ends: 2894 [2020-12-22 14:00:37,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:00:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-12-22 14:00:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2894. [2020-12-22 14:00:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2894 states. [2020-12-22 14:00:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 4321 transitions. [2020-12-22 14:00:37,328 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 4321 transitions. Word has length 16 [2020-12-22 14:00:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:37,329 INFO L481 AbstractCegarLoop]: Abstraction has 2894 states and 4321 transitions. [2020-12-22 14:00:37,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:00:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 4321 transitions. [2020-12-22 14:00:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 14:00:37,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:37,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:37,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:00:37,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash -349349577, now seen corresponding path program 1 times [2020-12-22 14:00:37,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:37,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739440642] [2020-12-22 14:00:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:37,861 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 14:00:37,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739440642] [2020-12-22 14:00:37,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:37,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:00:37,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927003755] [2020-12-22 14:00:37,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:00:37,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:37,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:00:37,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:00:37,865 INFO L87 Difference]: Start difference. First operand 2894 states and 4321 transitions. Second operand 3 states. [2020-12-22 14:00:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:40,357 INFO L93 Difference]: Finished difference Result 8656 states and 12936 transitions. [2020-12-22 14:00:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:00:40,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-22 14:00:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:40,396 INFO L225 Difference]: With dead ends: 8656 [2020-12-22 14:00:40,396 INFO L226 Difference]: Without dead ends: 5769 [2020-12-22 14:00:40,407 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 14:00:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2020-12-22 14:00:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5709. [2020-12-22 14:00:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5709 states. [2020-12-22 14:00:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 8589 transitions. [2020-12-22 14:00:40,789 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 8589 transitions. Word has length 16 [2020-12-22 14:00:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:40,789 INFO L481 AbstractCegarLoop]: Abstraction has 5709 states and 8589 transitions. [2020-12-22 14:00:40,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:00:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 8589 transitions. [2020-12-22 14:00:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 14:00:40,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:40,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:40,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:00:40,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -129558624, now seen corresponding path program 1 times [2020-12-22 14:00:40,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:40,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293429761] [2020-12-22 14:00:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:41,268 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 14:00:41,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293429761] [2020-12-22 14:00:41,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:41,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:00:41,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854978340] [2020-12-22 14:00:41,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:00:41,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:41,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:00:41,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:00:41,285 INFO L87 Difference]: Start difference. First operand 5709 states and 8589 transitions. Second operand 3 states. [2020-12-22 14:00:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:42,311 INFO L93 Difference]: Finished difference Result 17051 states and 25692 transitions. [2020-12-22 14:00:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:00:42,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 14:00:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:42,385 INFO L225 Difference]: With dead ends: 17051 [2020-12-22 14:00:42,385 INFO L226 Difference]: Without dead ends: 11347 [2020-12-22 14:00:42,403 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 14:00:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11347 states. [2020-12-22 14:00:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11257. [2020-12-22 14:00:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11257 states. [2020-12-22 14:00:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11257 states to 11257 states and 16986 transitions. [2020-12-22 14:00:42,837 INFO L78 Accepts]: Start accepts. Automaton has 11257 states and 16986 transitions. Word has length 19 [2020-12-22 14:00:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:42,838 INFO L481 AbstractCegarLoop]: Abstraction has 11257 states and 16986 transitions. [2020-12-22 14:00:42,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:00:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 11257 states and 16986 transitions. [2020-12-22 14:00:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 14:00:42,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:42,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:42,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:00:42,841 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1016835877, now seen corresponding path program 1 times [2020-12-22 14:00:42,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:42,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271267279] [2020-12-22 14:00:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:43,294 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 14:00:43,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271267279] [2020-12-22 14:00:43,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:43,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:00:43,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388018473] [2020-12-22 14:00:43,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:00:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:43,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:00:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:00:43,297 INFO L87 Difference]: Start difference. First operand 11257 states and 16986 transitions. Second operand 3 states. [2020-12-22 14:00:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:43,994 INFO L93 Difference]: Finished difference Result 22763 states and 34304 transitions. [2020-12-22 14:00:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:00:43,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 14:00:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:44,075 INFO L225 Difference]: With dead ends: 22763 [2020-12-22 14:00:44,075 INFO L226 Difference]: Without dead ends: 11513 [2020-12-22 14:00:44,100 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 14:00:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11513 states. [2020-12-22 14:00:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11513 to 11509. [2020-12-22 14:00:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11509 states. [2020-12-22 14:00:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11509 states to 11509 states and 17318 transitions. [2020-12-22 14:00:44,482 INFO L78 Accepts]: Start accepts. Automaton has 11509 states and 17318 transitions. Word has length 24 [2020-12-22 14:00:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:44,482 INFO L481 AbstractCegarLoop]: Abstraction has 11509 states and 17318 transitions. [2020-12-22 14:00:44,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:00:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11509 states and 17318 transitions. [2020-12-22 14:00:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 14:00:44,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:44,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:44,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:00:44,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1285357015, now seen corresponding path program 1 times [2020-12-22 14:00:44,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:44,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749511134] [2020-12-22 14:00:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:00:44,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749511134] [2020-12-22 14:00:44,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:44,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:00:44,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177304113] [2020-12-22 14:00:44,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:00:44,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:00:44,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:00:44,992 INFO L87 Difference]: Start difference. First operand 11509 states and 17318 transitions. Second operand 3 states. [2020-12-22 14:00:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:00:47,919 INFO L93 Difference]: Finished difference Result 23395 states and 35216 transitions. [2020-12-22 14:00:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:00:47,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 14:00:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:00:47,955 INFO L225 Difference]: With dead ends: 23395 [2020-12-22 14:00:47,955 INFO L226 Difference]: Without dead ends: 11893 [2020-12-22 14:00:47,977 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 14:00:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11893 states. [2020-12-22 14:00:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11893 to 11889. [2020-12-22 14:00:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11889 states. [2020-12-22 14:00:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 17814 transitions. [2020-12-22 14:00:48,274 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 17814 transitions. Word has length 39 [2020-12-22 14:00:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:00:48,274 INFO L481 AbstractCegarLoop]: Abstraction has 11889 states and 17814 transitions. [2020-12-22 14:00:48,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:00:48,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 17814 transitions. [2020-12-22 14:00:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 14:00:48,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:00:48,279 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:00:48,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:00:48,279 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:00:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:00:48,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1711536067, now seen corresponding path program 1 times [2020-12-22 14:00:48,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:00:48,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980702642] [2020-12-22 14:00:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:00:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:00:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:00:57,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980702642] [2020-12-22 14:00:57,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:00:57,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 14:00:57,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182603733] [2020-12-22 14:00:57,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 14:00:57,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:00:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 14:00:57,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:00:57,332 INFO L87 Difference]: Start difference. First operand 11889 states and 17814 transitions. Second operand 8 states. [2020-12-22 14:03:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:03:17,639 INFO L93 Difference]: Finished difference Result 25414 states and 38103 transitions. [2020-12-22 14:03:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 14:03:17,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-12-22 14:03:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:03:17,678 INFO L225 Difference]: With dead ends: 25414 [2020-12-22 14:03:17,678 INFO L226 Difference]: Without dead ends: 13532 [2020-12-22 14:03:17,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 14:03:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13532 states. [2020-12-22 14:03:18,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13532 to 12645. [2020-12-22 14:03:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12645 states. [2020-12-22 14:03:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12645 states to 12645 states and 18946 transitions. [2020-12-22 14:03:18,033 INFO L78 Accepts]: Start accepts. Automaton has 12645 states and 18946 transitions. Word has length 41 [2020-12-22 14:03:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:03:18,036 INFO L481 AbstractCegarLoop]: Abstraction has 12645 states and 18946 transitions. [2020-12-22 14:03:18,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 14:03:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12645 states and 18946 transitions. [2020-12-22 14:03:18,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 14:03:18,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:03:18,040 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-12-22 14:03:18,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:03:18,041 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:03:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:03:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1208147471, now seen corresponding path program 1 times [2020-12-22 14:03:18,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:03:18,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198730298] [2020-12-22 14:03:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:03:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:03:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 14:03:18,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198730298] [2020-12-22 14:03:18,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:03:18,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:03:18,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894389465] [2020-12-22 14:03:18,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:03:18,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:03:18,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:03:18,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:03:18,645 INFO L87 Difference]: Start difference. First operand 12645 states and 18946 transitions. Second operand 3 states. [2020-12-22 14:03:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:03:21,452 INFO L93 Difference]: Finished difference Result 25871 states and 38832 transitions. [2020-12-22 14:03:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:03:21,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 14:03:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:03:21,496 INFO L225 Difference]: With dead ends: 25871 [2020-12-22 14:03:21,497 INFO L226 Difference]: Without dead ends: 13233 [2020-12-22 14:03:21,522 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 14:03:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13233 states. [2020-12-22 14:03:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13233 to 13229. [2020-12-22 14:03:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13229 states. [2020-12-22 14:03:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13229 states to 13229 states and 19722 transitions. [2020-12-22 14:03:21,835 INFO L78 Accepts]: Start accepts. Automaton has 13229 states and 19722 transitions. Word has length 70 [2020-12-22 14:03:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:03:21,835 INFO L481 AbstractCegarLoop]: Abstraction has 13229 states and 19722 transitions. [2020-12-22 14:03:21,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:03:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13229 states and 19722 transitions. [2020-12-22 14:03:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 14:03:21,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:03:21,841 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-12-22 14:03:21,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:03:21,842 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:03:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:03:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -703711151, now seen corresponding path program 1 times [2020-12-22 14:03:21,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:03:21,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841868690] [2020-12-22 14:03:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:03:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:03:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 14:03:22,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841868690] [2020-12-22 14:03:22,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:03:22,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:03:22,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705608594] [2020-12-22 14:03:22,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:03:22,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:03:22,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:03:22,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:03:22,940 INFO L87 Difference]: Start difference. First operand 13229 states and 19722 transitions. Second operand 7 states. [2020-12-22 14:03:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:03:36,401 INFO L93 Difference]: Finished difference Result 51025 states and 77062 transitions. [2020-12-22 14:03:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:03:36,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-12-22 14:03:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:03:36,487 INFO L225 Difference]: With dead ends: 51025 [2020-12-22 14:03:36,487 INFO L226 Difference]: Without dead ends: 37803 [2020-12-22 14:03:36,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 14:03:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37803 states.