/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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:54:33,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:54:33,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:54:33,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:54:33,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:54:33,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:54:33,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:54:33,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:54:33,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:54:33,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:54:33,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:54:33,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:54:33,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:54:33,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:54:33,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:54:33,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:54:33,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:54:33,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:54:33,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:54:33,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:54:33,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:54:33,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:54:33,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:54:33,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:54:33,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 14:54:33,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:54:33,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:54:33,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:54:33,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:54:33,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:54:33,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:54:33,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:54:33,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:54:33,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:54:33,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:54:33,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:54:33,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:54:33,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:54:33,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:54:33,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:54:33,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:54:33,783 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:54:33,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:54:33,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:54:33,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:54:33,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:54:33,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:54:33,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:54:33,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:54:33,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:54:33,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:54:33,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:54:33,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:54:33,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:54:33,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:54:33,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:54:33,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:54:33,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:54:33,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:54:33,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:54:33,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:54:33,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:54:33,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:54:34,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:54:34,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:54:34,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:54:34,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:54:34,223 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:54:34,224 INFO L432 ainManager$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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2020-12-22 14:54:34,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a2b0fb3/b71570dcf3044593b9dec306e8eabea3/FLAG3d196a160 [2020-12-22 14:54:35,840 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:54:35,841 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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2020-12-22 14:54:35,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a2b0fb3/b71570dcf3044593b9dec306e8eabea3/FLAG3d196a160 [2020-12-22 14:54:36,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a2b0fb3/b71570dcf3044593b9dec306e8eabea3 [2020-12-22 14:54:36,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:54:36,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:54:36,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:54:36,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:54:36,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:54:36,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:54:36" (1/1) ... [2020-12-22 14:54:36,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5259648e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:36, skipping insertion in model container [2020-12-22 14:54:36,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:54:36" (1/1) ... [2020-12-22 14:54:36,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:54:36,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:54:41,217 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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2020-12-22 14:54:41,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:54:41,398 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:54:42,100 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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2020-12-22 14:54:42,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:54:43,447 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:54:43,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43 WrapperNode [2020-12-22 14:54:43,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:54:43,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:54:43,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:54:43,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:54:43,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:43,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:45,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:54:45,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:54:45,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:54:45,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:54:45,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:45,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:46,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:46,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:47,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:48,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:48,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (1/1) ... [2020-12-22 14:54:48,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:54:48,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:54:48,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:54:48,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:54:48,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (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 14:54:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:54:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:54:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:54:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:54:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:54:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:54:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 14:54:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:54:48,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:54:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:54:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:54:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:54:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:54:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:54:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:54:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:55:46,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:55:46,660 INFO L299 CfgBuilder]: Removed 12136 assume(true) statements. [2020-12-22 14:55:46,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:55:46 BoogieIcfgContainer [2020-12-22 14:55:46,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:55:46,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:55:46,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:55:46,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:55:46,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:54:36" (1/3) ... [2020-12-22 14:55:46,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baccbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:55:46, skipping insertion in model container [2020-12-22 14:55:46,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:54:43" (2/3) ... [2020-12-22 14:55:46,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baccbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:55:46, skipping insertion in model container [2020-12-22 14:55:46,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:55:46" (3/3) ... [2020-12-22 14:55:46,684 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2020-12-22 14:55:46,691 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:55:46,701 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 14:55:46,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 14:55:46,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:55:46,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:55:46,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:55:46,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:55:46,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:55:46,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:55:46,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:55:46,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:55:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 11244 states. [2020-12-22 14:55:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 14:55:46,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:55:46,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:55:46,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:55:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:55:46,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1290306745, now seen corresponding path program 1 times [2020-12-22 14:55:46,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:55:46,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468871072] [2020-12-22 14:55:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:55:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:55:47,887 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 14:55:47,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468871072] [2020-12-22 14:55:47,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:55:47,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:55:47,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034796048] [2020-12-22 14:55:47,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:55:47,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:55:47,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:55:47,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:55:47,913 INFO L87 Difference]: Start difference. First operand 11244 states. Second operand 2 states. [2020-12-22 14:55:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:55:48,336 INFO L93 Difference]: Finished difference Result 22484 states and 30497 transitions. [2020-12-22 14:55:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:55:48,338 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 68 [2020-12-22 14:55:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:55:48,435 INFO L225 Difference]: With dead ends: 22484 [2020-12-22 14:55:48,435 INFO L226 Difference]: Without dead ends: 11141 [2020-12-22 14:55:48,473 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 14:55:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11141 states. [2020-12-22 14:55:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11141 to 11141. [2020-12-22 14:55:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11141 states. [2020-12-22 14:55:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11141 states to 11141 states and 15023 transitions. [2020-12-22 14:55:48,901 INFO L78 Accepts]: Start accepts. Automaton has 11141 states and 15023 transitions. Word has length 68 [2020-12-22 14:55:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:55:48,902 INFO L481 AbstractCegarLoop]: Abstraction has 11141 states and 15023 transitions. [2020-12-22 14:55:48,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:55:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11141 states and 15023 transitions. [2020-12-22 14:55:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 14:55:48,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:55:48,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:55:48,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:55:48,915 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:55:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:55:48,916 INFO L82 PathProgramCache]: Analyzing trace with hash 689905999, now seen corresponding path program 1 times [2020-12-22 14:55:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:55:48,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145275413] [2020-12-22 14:55:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:55:49,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 14:55:49,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741001547] [2020-12-22 14:55:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:55:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:55:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 14:55:51,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:55:51,781 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 14:55:51,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145275413] [2020-12-22 14:55:51,782 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 14:55:51,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741001547] [2020-12-22 14:55:51,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:55:51,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:55:51,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028160370] [2020-12-22 14:55:51,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:55:51,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:55:51,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:55:51,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:55:51,785 INFO L87 Difference]: Start difference. First operand 11141 states and 15023 transitions. Second operand 3 states. [2020-12-22 14:55:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:55:53,099 INFO L93 Difference]: Finished difference Result 30197 states and 40795 transitions. [2020-12-22 14:55:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:55:53,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 14:55:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:55:53,220 INFO L225 Difference]: With dead ends: 30197 [2020-12-22 14:55:53,221 INFO L226 Difference]: Without dead ends: 19096 [2020-12-22 14:55:53,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 14:55:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19096 states. [2020-12-22 14:55:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19096 to 18574. [2020-12-22 14:55:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18574 states. [2020-12-22 14:55:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18574 states to 18574 states and 25039 transitions. [2020-12-22 14:55:53,823 INFO L78 Accepts]: Start accepts. Automaton has 18574 states and 25039 transitions. Word has length 68 [2020-12-22 14:55:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:55:53,824 INFO L481 AbstractCegarLoop]: Abstraction has 18574 states and 25039 transitions. [2020-12-22 14:55:53,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:55:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 18574 states and 25039 transitions. [2020-12-22 14:55:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 14:55:53,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:55:53,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:55:54,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 14:55:54,051 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:55:54,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:55:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1735445701, now seen corresponding path program 1 times [2020-12-22 14:55:54,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:55:54,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752198807] [2020-12-22 14:55:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:55:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:55:54,542 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 14:55:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752198807] [2020-12-22 14:55:54,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:55:54,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:55:54,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408140412] [2020-12-22 14:55:54,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:55:54,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:55:54,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:55:54,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:55:54,545 INFO L87 Difference]: Start difference. First operand 18574 states and 25039 transitions. Second operand 3 states. [2020-12-22 14:55:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:55:55,776 INFO L93 Difference]: Finished difference Result 53246 states and 71823 transitions. [2020-12-22 14:55:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:55:55,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 14:55:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:55:55,861 INFO L225 Difference]: With dead ends: 53246 [2020-12-22 14:55:55,862 INFO L226 Difference]: Without dead ends: 34712 [2020-12-22 14:55:55,898 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 14:55:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34712 states. [2020-12-22 14:55:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34712 to 34706. [2020-12-22 14:55:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34706 states. [2020-12-22 14:55:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34706 states to 34706 states and 46825 transitions. [2020-12-22 14:55:57,064 INFO L78 Accepts]: Start accepts. Automaton has 34706 states and 46825 transitions. Word has length 86 [2020-12-22 14:55:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:55:57,067 INFO L481 AbstractCegarLoop]: Abstraction has 34706 states and 46825 transitions. [2020-12-22 14:55:57,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:55:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 34706 states and 46825 transitions. [2020-12-22 14:55:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 14:55:57,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:55:57,103 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:55:57,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:55:57,104 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:55:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:55:57,105 INFO L82 PathProgramCache]: Analyzing trace with hash 330730959, now seen corresponding path program 1 times [2020-12-22 14:55:57,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:55:57,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293453239] [2020-12-22 14:55:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:55:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:55:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 14:55:58,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293453239] [2020-12-22 14:55:58,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:55:58,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:55:58,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325230508] [2020-12-22 14:55:58,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:55:58,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:55:58,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:55:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:55:58,006 INFO L87 Difference]: Start difference. First operand 34706 states and 46825 transitions. Second operand 3 states. [2020-12-22 14:55:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:55:59,650 INFO L93 Difference]: Finished difference Result 66410 states and 89540 transitions. [2020-12-22 14:55:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:55:59,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-22 14:55:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:55:59,832 INFO L225 Difference]: With dead ends: 66410 [2020-12-22 14:55:59,832 INFO L226 Difference]: Without dead ends: 66400 [2020-12-22 14:55:59,855 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 14:55:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66400 states. [2020-12-22 14:56:02,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66400 to 65936. [2020-12-22 14:56:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65936 states. [2020-12-22 14:56:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65936 states to 65936 states and 88939 transitions. [2020-12-22 14:56:02,318 INFO L78 Accepts]: Start accepts. Automaton has 65936 states and 88939 transitions. Word has length 128 [2020-12-22 14:56:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:02,319 INFO L481 AbstractCegarLoop]: Abstraction has 65936 states and 88939 transitions. [2020-12-22 14:56:02,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:56:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 65936 states and 88939 transitions. [2020-12-22 14:56:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 14:56:02,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:02,377 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:02,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:56:02,378 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:02,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1900925868, now seen corresponding path program 1 times [2020-12-22 14:56:02,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:02,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564924020] [2020-12-22 14:56:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 14:56:03,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564924020] [2020-12-22 14:56:03,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:03,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:56:03,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138636333] [2020-12-22 14:56:03,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:56:03,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:03,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:56:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:56:03,040 INFO L87 Difference]: Start difference. First operand 65936 states and 88939 transitions. Second operand 3 states. [2020-12-22 14:56:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:06,447 INFO L93 Difference]: Finished difference Result 174676 states and 235533 transitions. [2020-12-22 14:56:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:56:06,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-22 14:56:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:56:06,831 INFO L225 Difference]: With dead ends: 174676 [2020-12-22 14:56:06,831 INFO L226 Difference]: Without dead ends: 108780 [2020-12-22 14:56:07,030 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 14:56:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108780 states. [2020-12-22 14:56:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108780 to 108762. [2020-12-22 14:56:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108762 states. [2020-12-22 14:56:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108762 states to 108762 states and 146619 transitions. [2020-12-22 14:56:11,327 INFO L78 Accepts]: Start accepts. Automaton has 108762 states and 146619 transitions. Word has length 219 [2020-12-22 14:56:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:11,328 INFO L481 AbstractCegarLoop]: Abstraction has 108762 states and 146619 transitions. [2020-12-22 14:56:11,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:56:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 108762 states and 146619 transitions. [2020-12-22 14:56:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 14:56:11,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:11,445 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:11,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:56:11,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1357564224, now seen corresponding path program 1 times [2020-12-22 14:56:11,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:11,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938534167] [2020-12-22 14:56:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 14:56:12,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938534167] [2020-12-22 14:56:12,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:12,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:56:12,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67327370] [2020-12-22 14:56:12,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:56:12,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:12,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:56:12,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:56:12,339 INFO L87 Difference]: Start difference. First operand 108762 states and 146619 transitions. Second operand 3 states. [2020-12-22 14:56:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:16,498 INFO L93 Difference]: Finished difference Result 217484 states and 293192 transitions. [2020-12-22 14:56:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:56:16,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-12-22 14:56:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:56:16,726 INFO L225 Difference]: With dead ends: 217484 [2020-12-22 14:56:16,726 INFO L226 Difference]: Without dead ends: 108762 [2020-12-22 14:56:16,898 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 14:56:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108762 states. [2020-12-22 14:56:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108762 to 108722. [2020-12-22 14:56:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108722 states. [2020-12-22 14:56:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108722 states to 108722 states and 146571 transitions. [2020-12-22 14:56:20,592 INFO L78 Accepts]: Start accepts. Automaton has 108722 states and 146571 transitions. Word has length 242 [2020-12-22 14:56:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:20,605 INFO L481 AbstractCegarLoop]: Abstraction has 108722 states and 146571 transitions. [2020-12-22 14:56:20,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:56:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 108722 states and 146571 transitions. [2020-12-22 14:56:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-12-22 14:56:20,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:20,675 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:20,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:56:20,676 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:20,676 INFO L82 PathProgramCache]: Analyzing trace with hash 405878168, now seen corresponding path program 1 times [2020-12-22 14:56:20,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:20,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335870661] [2020-12-22 14:56:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:21,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 14:56:21,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500471651] [2020-12-22 14:56:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:56:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:24,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 5269 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 14:56:24,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:56:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 14:56:24,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335870661] [2020-12-22 14:56:24,403 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 14:56:24,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500471651] [2020-12-22 14:56:24,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:24,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:56:24,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932572164] [2020-12-22 14:56:24,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:56:24,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:56:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:56:24,406 INFO L87 Difference]: Start difference. First operand 108722 states and 146571 transitions. Second operand 3 states. [2020-12-22 14:56:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:30,190 INFO L93 Difference]: Finished difference Result 323814 states and 437065 transitions. [2020-12-22 14:56:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:56:30,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2020-12-22 14:56:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:56:30,654 INFO L225 Difference]: With dead ends: 323814 [2020-12-22 14:56:30,658 INFO L226 Difference]: Without dead ends: 215132 [2020-12-22 14:56:30,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 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 14:56:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215132 states. [2020-12-22 14:56:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215132 to 110142. [2020-12-22 14:56:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110142 states. [2020-12-22 14:56:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110142 states to 110142 states and 148275 transitions. [2020-12-22 14:56:35,439 INFO L78 Accepts]: Start accepts. Automaton has 110142 states and 148275 transitions. Word has length 261 [2020-12-22 14:56:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:35,440 INFO L481 AbstractCegarLoop]: Abstraction has 110142 states and 148275 transitions. [2020-12-22 14:56:35,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:56:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 110142 states and 148275 transitions. [2020-12-22 14:56:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-12-22 14:56:35,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:35,516 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:35,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:56:35,730 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:35,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1343929888, now seen corresponding path program 1 times [2020-12-22 14:56:35,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:35,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952485676] [2020-12-22 14:56:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 14:56:36,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952485676] [2020-12-22 14:56:36,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:36,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:56:36,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117552316] [2020-12-22 14:56:36,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:56:36,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:36,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:56:36,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:56:36,484 INFO L87 Difference]: Start difference. First operand 110142 states and 148275 transitions. Second operand 4 states. [2020-12-22 14:56:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:42,623 INFO L93 Difference]: Finished difference Result 244021 states and 328576 transitions. [2020-12-22 14:56:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:56:42,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2020-12-22 14:56:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:56:42,838 INFO L225 Difference]: With dead ends: 244021 [2020-12-22 14:56:42,838 INFO L226 Difference]: Without dead ends: 133919 [2020-12-22 14:56:42,972 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 14:56:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133919 states. [2020-12-22 14:56:47,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133919 to 110142. [2020-12-22 14:56:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110142 states. [2020-12-22 14:56:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110142 states to 110142 states and 148271 transitions. [2020-12-22 14:56:47,281 INFO L78 Accepts]: Start accepts. Automaton has 110142 states and 148271 transitions. Word has length 264 [2020-12-22 14:56:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:47,282 INFO L481 AbstractCegarLoop]: Abstraction has 110142 states and 148271 transitions. [2020-12-22 14:56:47,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:56:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 110142 states and 148271 transitions. [2020-12-22 14:56:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-12-22 14:56:47,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:47,340 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:47,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:56:47,341 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:47,341 INFO L82 PathProgramCache]: Analyzing trace with hash 954931560, now seen corresponding path program 1 times [2020-12-22 14:56:47,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:47,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916107215] [2020-12-22 14:56:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 14:56:48,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916107215] [2020-12-22 14:56:48,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:48,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:56:48,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588995523] [2020-12-22 14:56:48,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:56:48,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:48,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:56:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:56:48,405 INFO L87 Difference]: Start difference. First operand 110142 states and 148271 transitions. Second operand 4 states. [2020-12-22 14:56:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:59,320 INFO L93 Difference]: Finished difference Result 440092 states and 592442 transitions. [2020-12-22 14:56:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:56:59,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2020-12-22 14:56:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:00,039 INFO L225 Difference]: With dead ends: 440092 [2020-12-22 14:57:00,040 INFO L226 Difference]: Without dead ends: 329990 [2020-12-22 14:57:00,518 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 14:57:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329990 states. [2020-12-22 14:57:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329990 to 110150. [2020-12-22 14:57:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110150 states. [2020-12-22 14:57:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110150 states to 110150 states and 148279 transitions. [2020-12-22 14:57:07,115 INFO L78 Accepts]: Start accepts. Automaton has 110150 states and 148279 transitions. Word has length 270 [2020-12-22 14:57:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:07,115 INFO L481 AbstractCegarLoop]: Abstraction has 110150 states and 148279 transitions. [2020-12-22 14:57:07,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 110150 states and 148279 transitions. [2020-12-22 14:57:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-12-22 14:57:07,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:07,172 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:07,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:57:07,172 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:07,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash -374642491, now seen corresponding path program 1 times [2020-12-22 14:57:07,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:07,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035950944] [2020-12-22 14:57:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 14:57:08,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035950944] [2020-12-22 14:57:08,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:08,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:08,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134234007] [2020-12-22 14:57:08,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:57:08,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:57:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:57:08,164 INFO L87 Difference]: Start difference. First operand 110150 states and 148279 transitions. Second operand 3 states. [2020-12-22 14:57:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:14,745 INFO L93 Difference]: Finished difference Result 220268 states and 296528 transitions. [2020-12-22 14:57:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:57:14,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2020-12-22 14:57:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:15,008 INFO L225 Difference]: With dead ends: 220268 [2020-12-22 14:57:15,009 INFO L226 Difference]: Without dead ends: 110158 [2020-12-22 14:57:15,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:57:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110158 states. [2020-12-22 14:57:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110158 to 110158. [2020-12-22 14:57:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110158 states. [2020-12-22 14:57:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110158 states to 110158 states and 148287 transitions. [2020-12-22 14:57:21,585 INFO L78 Accepts]: Start accepts. Automaton has 110158 states and 148287 transitions. Word has length 273 [2020-12-22 14:57:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:21,586 INFO L481 AbstractCegarLoop]: Abstraction has 110158 states and 148287 transitions. [2020-12-22 14:57:21,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:57:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 110158 states and 148287 transitions. [2020-12-22 14:57:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-12-22 14:57:21,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:21,640 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:21,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:57:21,641 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:21,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1788674734, now seen corresponding path program 1 times [2020-12-22 14:57:21,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:21,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051353507] [2020-12-22 14:57:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 14:57:22,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051353507] [2020-12-22 14:57:22,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:22,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:57:22,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83544915] [2020-12-22 14:57:22,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:22,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:22,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:22,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:22,277 INFO L87 Difference]: Start difference. First operand 110158 states and 148287 transitions. Second operand 4 states. [2020-12-22 14:57:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:30,490 INFO L93 Difference]: Finished difference Result 266386 states and 358722 transitions. [2020-12-22 14:57:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:57:30,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2020-12-22 14:57:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:30,745 INFO L225 Difference]: With dead ends: 266386 [2020-12-22 14:57:30,745 INFO L226 Difference]: Without dead ends: 156268 [2020-12-22 14:57:31,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156268 states. [2020-12-22 14:57:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156268 to 110166. [2020-12-22 14:57:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110166 states. [2020-12-22 14:57:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110166 states to 110166 states and 148295 transitions. [2020-12-22 14:57:36,629 INFO L78 Accepts]: Start accepts. Automaton has 110166 states and 148295 transitions. Word has length 274 [2020-12-22 14:57:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:36,629 INFO L481 AbstractCegarLoop]: Abstraction has 110166 states and 148295 transitions. [2020-12-22 14:57:36,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 110166 states and 148295 transitions. [2020-12-22 14:57:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-12-22 14:57:36,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:36,904 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:36,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:57:36,905 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:36,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1778071207, now seen corresponding path program 1 times [2020-12-22 14:57:36,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:36,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991558157] [2020-12-22 14:57:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 14:57:37,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991558157] [2020-12-22 14:57:37,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:37,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:37,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31760530] [2020-12-22 14:57:37,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:57:37,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:37,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:57:37,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:57:37,728 INFO L87 Difference]: Start difference. First operand 110166 states and 148295 transitions. Second operand 3 states.