/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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:57:12,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:57:12,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:57:12,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:57:12,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:57:12,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:57:12,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:57:12,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:57:12,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:57:12,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:57:12,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:57:12,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:57:12,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:57:12,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:57:12,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:57:12,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:57:12,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:57:12,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:57:12,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:57:12,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:57:12,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:57:12,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:57:12,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:57:12,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:57:12,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:57:12,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:57:12,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:57:12,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:57:12,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:57:12,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:57:12,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:57:12,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:57:12,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:57:12,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:57:12,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:57:12,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:57:12,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:57:12,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:57:12,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:57:12,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:57:12,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:57:12,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:57:12,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:57:12,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:57:12,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:57:12,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:57:12,805 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:57:12,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:57:12,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:57:12,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:57:12,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:57:12,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:57:12,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:57:12,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:57:12,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:57:12,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:57:12,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:57:12,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:57:12,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:57:12,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:57:12,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:57:12,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:57:12,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:57:12,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:57:12,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:57:12,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:57:12,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:57:12,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:57:13,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:57:13,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:57:13,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:57:13,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:57:13,232 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:57:13,233 INFO L432 ainManager$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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2020-12-22 14:57:13,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca8500c0/5513410b598646ac97c49fc59948b968/FLAG73364155f [2020-12-22 14:57:14,417 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:57:14,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2020-12-22 14:57:14,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca8500c0/5513410b598646ac97c49fc59948b968/FLAG73364155f [2020-12-22 14:57:14,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca8500c0/5513410b598646ac97c49fc59948b968 [2020-12-22 14:57:14,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:57:14,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:57:14,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:57:14,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:57:14,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:57:14,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:57:14" (1/1) ... [2020-12-22 14:57:14,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8ba567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:14, skipping insertion in model container [2020-12-22 14:57:14,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:57:14" (1/1) ... [2020-12-22 14:57:14,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:57:14,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:57:17,352 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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2020-12-22 14:57:17,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:57:17,490 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:57:18,118 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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2020-12-22 14:57:18,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:57:18,651 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:57:18,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18 WrapperNode [2020-12-22 14:57:18,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:57:18,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:57:18,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:57:18,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:57:18,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:18,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:19,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:57:19,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:57:19,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:57:19,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:57:19,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:19,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:20,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:20,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:20,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:21,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:21,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (1/1) ... [2020-12-22 14:57:21,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:57:21,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:57:21,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:57:21,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:57:21,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (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 14:57:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:57:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:57:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:57:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:57:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:57:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:57:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:57:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:57:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:57:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:57:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:57:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:57:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:57:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:57:21,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:57:43,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:57:43,474 INFO L299 CfgBuilder]: Removed 6500 assume(true) statements. [2020-12-22 14:57:43,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:57:43 BoogieIcfgContainer [2020-12-22 14:57:43,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:57:43,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:57:43,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:57:43,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:57:43,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:57:14" (1/3) ... [2020-12-22 14:57:43,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563e1354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:57:43, skipping insertion in model container [2020-12-22 14:57:43,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:57:18" (2/3) ... [2020-12-22 14:57:43,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563e1354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:57:43, skipping insertion in model container [2020-12-22 14:57:43,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:57:43" (3/3) ... [2020-12-22 14:57:43,498 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2020-12-22 14:57:43,506 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:57:43,528 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-22 14:57:43,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-22 14:57:43,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:57:43,624 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:57:43,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:57:43,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:57:43,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:57:43,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:57:43,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:57:43,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:57:43,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states. [2020-12-22 14:57:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 14:57:43,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:43,747 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] [2020-12-22 14:57:43,752 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:43,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1578018257, now seen corresponding path program 1 times [2020-12-22 14:57:43,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:43,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864455066] [2020-12-22 14:57:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:44,452 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 14:57:44,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864455066] [2020-12-22 14:57:44,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:44,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:57:44,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563560066] [2020-12-22 14:57:44,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:57:44,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:57:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:57:44,475 INFO L87 Difference]: Start difference. First operand 5295 states. Second operand 2 states. [2020-12-22 14:57:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:44,781 INFO L93 Difference]: Finished difference Result 10496 states and 13791 transitions. [2020-12-22 14:57:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:57:44,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2020-12-22 14:57:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:44,850 INFO L225 Difference]: With dead ends: 10496 [2020-12-22 14:57:44,850 INFO L226 Difference]: Without dead ends: 5101 [2020-12-22 14:57:44,876 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 14:57:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2020-12-22 14:57:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5101. [2020-12-22 14:57:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5101 states. [2020-12-22 14:57:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 6543 transitions. [2020-12-22 14:57:45,154 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 6543 transitions. Word has length 43 [2020-12-22 14:57:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:45,155 INFO L481 AbstractCegarLoop]: Abstraction has 5101 states and 6543 transitions. [2020-12-22 14:57:45,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:57:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 6543 transitions. [2020-12-22 14:57:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 14:57:45,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:45,162 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] [2020-12-22 14:57:45,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:57:45,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash 716061479, now seen corresponding path program 1 times [2020-12-22 14:57:45,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:45,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107852515] [2020-12-22 14:57:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:45,538 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 14:57:45,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107852515] [2020-12-22 14:57:45,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:45,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:45,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604298334] [2020-12-22 14:57:45,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:45,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:45,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:45,545 INFO L87 Difference]: Start difference. First operand 5101 states and 6543 transitions. Second operand 4 states. [2020-12-22 14:57:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:46,487 INFO L93 Difference]: Finished difference Result 19415 states and 24755 transitions. [2020-12-22 14:57:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:46,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-12-22 14:57:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:46,566 INFO L225 Difference]: With dead ends: 19415 [2020-12-22 14:57:46,566 INFO L226 Difference]: Without dead ends: 14340 [2020-12-22 14:57:46,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:57:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14340 states. [2020-12-22 14:57:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 7494. [2020-12-22 14:57:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7494 states. [2020-12-22 14:57:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 9545 transitions. [2020-12-22 14:57:47,382 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 9545 transitions. Word has length 43 [2020-12-22 14:57:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:47,383 INFO L481 AbstractCegarLoop]: Abstraction has 7494 states and 9545 transitions. [2020-12-22 14:57:47,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 9545 transitions. [2020-12-22 14:57:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 14:57:47,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:47,386 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] [2020-12-22 14:57:47,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:57:47,387 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash -268487873, now seen corresponding path program 1 times [2020-12-22 14:57:47,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:47,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319783852] [2020-12-22 14:57:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:47,654 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 14:57:47,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319783852] [2020-12-22 14:57:47,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:47,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:47,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700567686] [2020-12-22 14:57:47,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:47,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:47,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:47,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:47,657 INFO L87 Difference]: Start difference. First operand 7494 states and 9545 transitions. Second operand 4 states. [2020-12-22 14:57:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:49,010 INFO L93 Difference]: Finished difference Result 31384 states and 39775 transitions. [2020-12-22 14:57:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:49,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 14:57:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:49,124 INFO L225 Difference]: With dead ends: 31384 [2020-12-22 14:57:49,124 INFO L226 Difference]: Without dead ends: 23916 [2020-12-22 14:57:49,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:57:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23916 states. [2020-12-22 14:57:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23916 to 14256. [2020-12-22 14:57:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14256 states. [2020-12-22 14:57:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 18149 transitions. [2020-12-22 14:57:49,926 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 18149 transitions. Word has length 44 [2020-12-22 14:57:49,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:49,927 INFO L481 AbstractCegarLoop]: Abstraction has 14256 states and 18149 transitions. [2020-12-22 14:57:49,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 18149 transitions. [2020-12-22 14:57:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 14:57:49,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:49,930 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] [2020-12-22 14:57:49,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:57:49,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash -724744518, now seen corresponding path program 1 times [2020-12-22 14:57:49,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:49,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618066096] [2020-12-22 14:57:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:50,197 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 14:57:50,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618066096] [2020-12-22 14:57:50,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:50,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:50,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6796696] [2020-12-22 14:57:50,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:50,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:50,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:50,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:50,207 INFO L87 Difference]: Start difference. First operand 14256 states and 18149 transitions. Second operand 4 states. [2020-12-22 14:57:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:52,202 INFO L93 Difference]: Finished difference Result 60606 states and 76751 transitions. [2020-12-22 14:57:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:52,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 14:57:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:52,344 INFO L225 Difference]: With dead ends: 60606 [2020-12-22 14:57:52,344 INFO L226 Difference]: Without dead ends: 46376 [2020-12-22 14:57:52,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:57:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46376 states. [2020-12-22 14:57:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46376 to 27129. [2020-12-22 14:57:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27129 states. [2020-12-22 14:57:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27129 states to 27129 states and 34488 transitions. [2020-12-22 14:57:54,135 INFO L78 Accepts]: Start accepts. Automaton has 27129 states and 34488 transitions. Word has length 45 [2020-12-22 14:57:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:54,138 INFO L481 AbstractCegarLoop]: Abstraction has 27129 states and 34488 transitions. [2020-12-22 14:57:54,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 27129 states and 34488 transitions. [2020-12-22 14:57:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 14:57:54,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:54,141 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] [2020-12-22 14:57:54,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:57:54,141 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:54,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1983796430, now seen corresponding path program 1 times [2020-12-22 14:57:54,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:54,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897420715] [2020-12-22 14:57:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:54,378 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 14:57:54,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897420715] [2020-12-22 14:57:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435641074] [2020-12-22 14:57:54,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:54,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:54,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:54,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:54,383 INFO L87 Difference]: Start difference. First operand 27129 states and 34488 transitions. Second operand 4 states. [2020-12-22 14:57:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:57,896 INFO L93 Difference]: Finished difference Result 117093 states and 148068 transitions. [2020-12-22 14:57:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:57,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 14:57:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:58,170 INFO L225 Difference]: With dead ends: 117093 [2020-12-22 14:57:58,170 INFO L226 Difference]: Without dead ends: 89990 [2020-12-22 14:57:58,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:57:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89990 states. [2020-12-22 14:58:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89990 to 51570. [2020-12-22 14:58:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51570 states. [2020-12-22 14:58:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51570 states to 51570 states and 65422 transitions. [2020-12-22 14:58:01,019 INFO L78 Accepts]: Start accepts. Automaton has 51570 states and 65422 transitions. Word has length 46 [2020-12-22 14:58:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:01,020 INFO L481 AbstractCegarLoop]: Abstraction has 51570 states and 65422 transitions. [2020-12-22 14:58:01,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:58:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 51570 states and 65422 transitions. [2020-12-22 14:58:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 14:58:01,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:01,027 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] [2020-12-22 14:58:01,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:58:01,028 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash 875621550, now seen corresponding path program 1 times [2020-12-22 14:58:01,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:01,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174597184] [2020-12-22 14:58:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:58:01,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174597184] [2020-12-22 14:58:01,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:01,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:58:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494693150] [2020-12-22 14:58:01,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:58:01,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:01,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:58:01,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:58:01,418 INFO L87 Difference]: Start difference. First operand 51570 states and 65422 transitions. Second operand 5 states. [2020-12-22 14:58:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:05,513 INFO L93 Difference]: Finished difference Result 168638 states and 213388 transitions. [2020-12-22 14:58:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:58:05,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 14:58:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:05,858 INFO L225 Difference]: With dead ends: 168638 [2020-12-22 14:58:05,858 INFO L226 Difference]: Without dead ends: 117094 [2020-12-22 14:58:06,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:58:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117094 states. [2020-12-22 14:58:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117094 to 51610. [2020-12-22 14:58:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51610 states. [2020-12-22 14:58:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51610 states to 51610 states and 65462 transitions. [2020-12-22 14:58:08,971 INFO L78 Accepts]: Start accepts. Automaton has 51610 states and 65462 transitions. Word has length 51 [2020-12-22 14:58:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:08,972 INFO L481 AbstractCegarLoop]: Abstraction has 51610 states and 65462 transitions. [2020-12-22 14:58:08,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:58:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 51610 states and 65462 transitions. [2020-12-22 14:58:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 14:58:08,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:08,975 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] [2020-12-22 14:58:08,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:58:08,976 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:08,977 INFO L82 PathProgramCache]: Analyzing trace with hash 837480967, now seen corresponding path program 1 times [2020-12-22 14:58:08,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:08,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17030700] [2020-12-22 14:58:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:09,257 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 14:58:09,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17030700] [2020-12-22 14:58:09,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:09,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:58:09,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841861331] [2020-12-22 14:58:09,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:58:09,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:09,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:58:09,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:58:09,260 INFO L87 Difference]: Start difference. First operand 51610 states and 65462 transitions. Second operand 3 states. [2020-12-22 14:58:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:11,348 INFO L93 Difference]: Finished difference Result 51610 states and 65462 transitions. [2020-12-22 14:58:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:58:11,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 14:58:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:11,439 INFO L225 Difference]: With dead ends: 51610 [2020-12-22 14:58:11,440 INFO L226 Difference]: Without dead ends: 51588 [2020-12-22 14:58:11,455 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 14:58:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51588 states. [2020-12-22 14:58:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51588 to 51588. [2020-12-22 14:58:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51588 states. [2020-12-22 14:58:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51588 states to 51588 states and 65319 transitions. [2020-12-22 14:58:13,834 INFO L78 Accepts]: Start accepts. Automaton has 51588 states and 65319 transitions. Word has length 54 [2020-12-22 14:58:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:13,834 INFO L481 AbstractCegarLoop]: Abstraction has 51588 states and 65319 transitions. [2020-12-22 14:58:13,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:58:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 51588 states and 65319 transitions. [2020-12-22 14:58:13,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 14:58:13,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:13,848 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:58:13,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:58:13,849 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:13,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:13,849 INFO L82 PathProgramCache]: Analyzing trace with hash -168317315, now seen corresponding path program 1 times [2020-12-22 14:58:13,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:13,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331595914] [2020-12-22 14:58:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:13,986 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 14:58:13,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331595914] [2020-12-22 14:58:13,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:13,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:13,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345415292] [2020-12-22 14:58:13,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:58:13,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:13,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:58:13,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:58:13,989 INFO L87 Difference]: Start difference. First operand 51588 states and 65319 transitions. Second operand 3 states. [2020-12-22 14:58:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:17,175 INFO L93 Difference]: Finished difference Result 132222 states and 167446 transitions. [2020-12-22 14:58:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:58:17,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 14:58:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:17,284 INFO L225 Difference]: With dead ends: 132222 [2020-12-22 14:58:17,285 INFO L226 Difference]: Without dead ends: 80660 [2020-12-22 14:58:17,344 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 14:58:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80660 states. [2020-12-22 14:58:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80660 to 75868. [2020-12-22 14:58:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75868 states. [2020-12-22 14:58:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75868 states to 75868 states and 96687 transitions. [2020-12-22 14:58:20,429 INFO L78 Accepts]: Start accepts. Automaton has 75868 states and 96687 transitions. Word has length 80 [2020-12-22 14:58:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:20,430 INFO L481 AbstractCegarLoop]: Abstraction has 75868 states and 96687 transitions. [2020-12-22 14:58:20,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:58:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 75868 states and 96687 transitions. [2020-12-22 14:58:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 14:58:20,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:20,441 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 14:58:20,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:58:20,441 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:20,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1447357583, now seen corresponding path program 1 times [2020-12-22 14:58:20,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:20,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805215494] [2020-12-22 14:58:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:58:20,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805215494] [2020-12-22 14:58:20,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:20,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:20,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738443454] [2020-12-22 14:58:20,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:58:20,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:20,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:58:20,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:58:20,635 INFO L87 Difference]: Start difference. First operand 75868 states and 96687 transitions. Second operand 3 states. [2020-12-22 14:58:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:26,069 INFO L93 Difference]: Finished difference Result 220848 states and 282133 transitions. [2020-12-22 14:58:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:58:26,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 14:58:26,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:26,307 INFO L225 Difference]: With dead ends: 220848 [2020-12-22 14:58:26,307 INFO L226 Difference]: Without dead ends: 145006 [2020-12-22 14:58:26,403 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 14:58:26,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145006 states. [2020-12-22 14:58:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145006 to 144950. [2020-12-22 14:58:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144950 states. [2020-12-22 14:58:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144950 states to 144950 states and 185398 transitions. [2020-12-22 14:58:31,927 INFO L78 Accepts]: Start accepts. Automaton has 144950 states and 185398 transitions. Word has length 153 [2020-12-22 14:58:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:31,928 INFO L481 AbstractCegarLoop]: Abstraction has 144950 states and 185398 transitions. [2020-12-22 14:58:31,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:58:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 144950 states and 185398 transitions. [2020-12-22 14:58:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 14:58:31,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:31,947 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-12-22 14:58:31,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:58:31,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:31,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1726590668, now seen corresponding path program 1 times [2020-12-22 14:58:31,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:31,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781691274] [2020-12-22 14:58:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 14:58:32,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781691274] [2020-12-22 14:58:32,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:32,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:32,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433526061] [2020-12-22 14:58:32,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:58:32,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:32,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:58:32,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:58:32,428 INFO L87 Difference]: Start difference. First operand 144950 states and 185398 transitions. Second operand 3 states. [2020-12-22 14:58:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:38,785 INFO L93 Difference]: Finished difference Result 289874 states and 370768 transitions. [2020-12-22 14:58:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:58:38,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 14:58:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:39,016 INFO L225 Difference]: With dead ends: 289874 [2020-12-22 14:58:39,017 INFO L226 Difference]: Without dead ends: 144950 [2020-12-22 14:58:39,181 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 14:58:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144950 states. [2020-12-22 14:58:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144950 to 144950. [2020-12-22 14:58:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144950 states. [2020-12-22 14:58:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144950 states to 144950 states and 185366 transitions. [2020-12-22 14:58:45,001 INFO L78 Accepts]: Start accepts. Automaton has 144950 states and 185366 transitions. Word has length 171 [2020-12-22 14:58:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:45,001 INFO L481 AbstractCegarLoop]: Abstraction has 144950 states and 185366 transitions. [2020-12-22 14:58:45,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:58:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 144950 states and 185366 transitions. [2020-12-22 14:58:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-12-22 14:58:45,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:45,015 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-12-22 14:58:45,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:58:45,016 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1094781641, now seen corresponding path program 1 times [2020-12-22 14:58:45,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:45,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32247561] [2020-12-22 14:58:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 14:58:45,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32247561] [2020-12-22 14:58:45,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:45,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:45,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516441645] [2020-12-22 14:58:45,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:58:45,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:45,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:58:45,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:58:45,650 INFO L87 Difference]: Start difference. First operand 144950 states and 185366 transitions. Second operand 3 states. [2020-12-22 14:58:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:54,291 INFO L93 Difference]: Finished difference Result 343594 states and 440204 transitions. [2020-12-22 14:58:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:58:54,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2020-12-22 14:58:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:54,807 INFO L225 Difference]: With dead ends: 343594 [2020-12-22 14:58:54,807 INFO L226 Difference]: Without dead ends: 198670 [2020-12-22 14:58:55,027 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 14:58:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198670 states. [2020-12-22 14:59:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198670 to 193878. [2020-12-22 14:59:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193878 states. [2020-12-22 14:59:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193878 states to 193878 states and 248582 transitions. [2020-12-22 14:59:02,612 INFO L78 Accepts]: Start accepts. Automaton has 193878 states and 248582 transitions. Word has length 179 [2020-12-22 14:59:02,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:59:02,612 INFO L481 AbstractCegarLoop]: Abstraction has 193878 states and 248582 transitions. [2020-12-22 14:59:02,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:59:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand 193878 states and 248582 transitions. [2020-12-22 14:59:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-22 14:59:02,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:59:02,625 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:59:02,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:59:02,625 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:59:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:59:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1229456166, now seen corresponding path program 1 times [2020-12-22 14:59:02,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:59:02,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103565591] [2020-12-22 14:59:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:59:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:59:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 14:59:03,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103565591] [2020-12-22 14:59:03,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:59:03,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:59:03,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555211575] [2020-12-22 14:59:03,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:59:03,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:59:03,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:59:03,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:59:03,261 INFO L87 Difference]: Start difference. First operand 193878 states and 248582 transitions. Second operand 4 states. [2020-12-22 14:59:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:18,164 INFO L93 Difference]: Finished difference Result 581306 states and 745228 transitions. [2020-12-22 14:59:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:59:18,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-12-22 14:59:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:19,236 INFO L225 Difference]: With dead ends: 581306 [2020-12-22 14:59:19,237 INFO L226 Difference]: Without dead ends: 387454 [2020-12-22 14:59:19,564 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 14:59:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387454 states. [2020-12-22 14:59:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387454 to 194070. [2020-12-22 14:59:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194070 states. [2020-12-22 14:59:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194070 states to 194070 states and 248774 transitions. [2020-12-22 14:59:33,021 INFO L78 Accepts]: Start accepts. Automaton has 194070 states and 248774 transitions. Word has length 196 [2020-12-22 14:59:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:59:33,022 INFO L481 AbstractCegarLoop]: Abstraction has 194070 states and 248774 transitions. [2020-12-22 14:59:33,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:59:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 194070 states and 248774 transitions. [2020-12-22 14:59:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-22 14:59:33,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:59:33,036 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:59:33,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:59:33,036 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:59:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:59:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash 615911000, now seen corresponding path program 1 times [2020-12-22 14:59:33,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:59:33,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118074759] [2020-12-22 14:59:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:59:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:59:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 14:59:33,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118074759] [2020-12-22 14:59:33,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:59:33,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:59:33,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588384493] [2020-12-22 14:59:33,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:59:33,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:59:33,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:59:33,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:59:33,501 INFO L87 Difference]: Start difference. First operand 194070 states and 248774 transitions. Second operand 5 states. [2020-12-22 14:59:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:56,834 INFO L93 Difference]: Finished difference Result 672014 states and 862866 transitions. [2020-12-22 14:59:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:59:56,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-12-22 14:59:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:58,134 INFO L225 Difference]: With dead ends: 672014 [2020-12-22 14:59:58,134 INFO L226 Difference]: Without dead ends: 477970 [2020-12-22 14:59:58,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:59:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477970 states. [2020-12-22 15:00:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477970 to 194118. [2020-12-22 15:00:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194118 states. [2020-12-22 15:00:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194118 states to 194118 states and 248822 transitions. [2020-12-22 15:00:11,249 INFO L78 Accepts]: Start accepts. Automaton has 194118 states and 248822 transitions. Word has length 196 [2020-12-22 15:00:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:11,249 INFO L481 AbstractCegarLoop]: Abstraction has 194118 states and 248822 transitions. [2020-12-22 15:00:11,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:00:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 194118 states and 248822 transitions. [2020-12-22 15:00:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-22 15:00:11,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:11,263 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:11,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 15:00:11,263 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:11,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1998369998, now seen corresponding path program 1 times [2020-12-22 15:00:11,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:11,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354871944] [2020-12-22 15:00:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 15:00:11,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354871944] [2020-12-22 15:00:11,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:11,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:00:11,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862061539] [2020-12-22 15:00:11,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:00:11,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:00:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:00:11,949 INFO L87 Difference]: Start difference. First operand 194118 states and 248822 transitions. Second operand 4 states.