/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:48:54,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:48:54,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:48:54,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:48:54,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:48:54,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:48:54,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:48:54,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:48:54,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:48:54,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:48:54,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:48:54,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:48:54,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:48:54,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:48:54,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:48:54,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:48:54,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:48:54,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:48:54,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:48:54,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:48:54,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:48:54,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:48:54,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:48:54,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:48:54,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:48:54,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:48:54,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:48:54,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:48:54,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:48:54,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:48:54,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:48:54,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:48:54,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:48:54,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:48:54,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:48:54,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:48:54,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:48:54,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:48:54,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:48:54,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:48:54,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:48:54,751 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:48:54,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:48:54,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:48:54,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:48:54,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:48:54,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:48:54,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:48:54,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:48:54,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:48:54,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:48:54,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:48:54,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:48:54,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:48:54,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:48:54,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:48:54,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:48:54,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:48:54,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:48:54,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:48:54,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:48:54,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:48:54,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:48:54,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:48:54,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:48:54,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:48:54,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:48:55,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:48:55,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:48:55,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:48:55,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:48:55,051 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:48:55,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-07-07 11:48:55,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb1b3c5a/b913206cda32453f9182d5a04377a6f9/FLAGa1de7a1c2 [2020-07-07 11:48:55,828 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:48:55,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-07-07 11:48:55,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb1b3c5a/b913206cda32453f9182d5a04377a6f9/FLAGa1de7a1c2 [2020-07-07 11:48:55,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb1b3c5a/b913206cda32453f9182d5a04377a6f9 [2020-07-07 11:48:55,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:48:55,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:48:55,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:48:55,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:48:55,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:48:55,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:48:55" (1/1) ... [2020-07-07 11:48:55,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552f59d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:55, skipping insertion in model container [2020-07-07 11:48:55,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:48:55" (1/1) ... [2020-07-07 11:48:55,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:48:56,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:48:57,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:48:57,947 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:48:59,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:48:59,560 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:48:59,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59 WrapperNode [2020-07-07 11:48:59,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:48:59,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:48:59,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:48:59,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:48:59,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (1/1) ... [2020-07-07 11:48:59,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:48:59,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:48:59,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:48:59,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:48:59,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (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 [2020-07-07 11:48:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:48:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:48:59,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:48:59,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:48:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:48:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 11:48:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 11:48:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-07 11:48:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:48:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:48:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-07 11:48:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-07 11:48:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-07 11:48:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-07 11:48:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-07 11:48:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-07 11:48:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-07 11:48:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-07 11:48:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 11:48:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:48:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:48:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:49:04,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:49:04,423 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:49:04,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:49:04 BoogieIcfgContainer [2020-07-07 11:49:04,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:49:04,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:49:04,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:49:04,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:49:04,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:48:55" (1/3) ... [2020-07-07 11:49:04,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9b07ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:49:04, skipping insertion in model container [2020-07-07 11:49:04,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:48:59" (2/3) ... [2020-07-07 11:49:04,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9b07ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:49:04, skipping insertion in model container [2020-07-07 11:49:04,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:49:04" (3/3) ... [2020-07-07 11:49:04,443 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-07-07 11:49:04,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:49:04,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-07 11:49:04,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-07 11:49:04,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:49:04,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:49:04,503 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:49:04,503 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:49:04,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:49:04,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:49:04,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:49:04,504 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:49:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states. [2020-07-07 11:49:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-07-07 11:49:04,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:49:04,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:49:04,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:49:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:49:04,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1064488228, now seen corresponding path program 1 times [2020-07-07 11:49:04,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:49:04,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449157927] [2020-07-07 11:49:04,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:49:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:49:08,101 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:49:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:49:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:49:08,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449157927] [2020-07-07 11:49:08,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:49:08,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:49:08,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291612806] [2020-07-07 11:49:08,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:49:08,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:49:08,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:49:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:49:08,486 INFO L87 Difference]: Start difference. First operand 1484 states. Second operand 5 states. [2020-07-07 11:49:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:49:24,030 INFO L93 Difference]: Finished difference Result 4394 states and 7936 transitions. [2020-07-07 11:49:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:49:24,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 484 [2020-07-07 11:49:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:49:24,077 INFO L225 Difference]: With dead ends: 4394 [2020-07-07 11:49:24,077 INFO L226 Difference]: Without dead ends: 2919 [2020-07-07 11:49:24,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:49:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-07-07 11:49:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2865. [2020-07-07 11:49:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2865 states. [2020-07-07 11:49:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 4721 transitions. [2020-07-07 11:49:24,296 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 4721 transitions. Word has length 484 [2020-07-07 11:49:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:49:24,298 INFO L479 AbstractCegarLoop]: Abstraction has 2865 states and 4721 transitions. [2020-07-07 11:49:24,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:49:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 4721 transitions. [2020-07-07 11:49:24,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-07-07 11:49:24,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:49:24,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:49:24,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:49:24,320 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:49:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:49:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1721765960, now seen corresponding path program 1 times [2020-07-07 11:49:24,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:49:24,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382598540] [2020-07-07 11:49:24,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:49:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:49:25,940 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:49:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:49:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:49:26,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382598540] [2020-07-07 11:49:26,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:49:26,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:49:26,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657793202] [2020-07-07 11:49:26,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:49:26,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:49:26,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:49:26,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:49:26,458 INFO L87 Difference]: Start difference. First operand 2865 states and 4721 transitions. Second operand 4 states. [2020-07-07 11:49:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:49:44,840 INFO L93 Difference]: Finished difference Result 8316 states and 13666 transitions. [2020-07-07 11:49:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:49:44,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 486 [2020-07-07 11:49:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:49:44,870 INFO L225 Difference]: With dead ends: 8316 [2020-07-07 11:49:44,870 INFO L226 Difference]: Without dead ends: 5665 [2020-07-07 11:49:44,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:49:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2020-07-07 11:49:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5613. [2020-07-07 11:49:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5613 states. [2020-07-07 11:49:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 9225 transitions. [2020-07-07 11:49:45,073 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 9225 transitions. Word has length 486 [2020-07-07 11:49:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:49:45,076 INFO L479 AbstractCegarLoop]: Abstraction has 5613 states and 9225 transitions. [2020-07-07 11:49:45,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:49:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 9225 transitions. [2020-07-07 11:49:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-07-07 11:49:45,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:49:45,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:49:45,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:49:45,104 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:49:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:49:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash 326918239, now seen corresponding path program 1 times [2020-07-07 11:49:45,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:49:45,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774939237] [2020-07-07 11:49:45,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:49:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:49:46,026 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:49:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:49:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:49:46,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774939237] [2020-07-07 11:49:46,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:49:46,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:49:46,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509294577] [2020-07-07 11:49:46,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:49:46,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:49:46,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:49:46,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:49:46,292 INFO L87 Difference]: Start difference. First operand 5613 states and 9225 transitions. Second operand 4 states. [2020-07-07 11:50:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:50:03,787 INFO L93 Difference]: Finished difference Result 16742 states and 27507 transitions. [2020-07-07 11:50:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:50:03,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 487 [2020-07-07 11:50:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:50:03,834 INFO L225 Difference]: With dead ends: 16742 [2020-07-07 11:50:03,834 INFO L226 Difference]: Without dead ends: 11181 [2020-07-07 11:50:03,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:50:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2020-07-07 11:50:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 5660. [2020-07-07 11:50:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5660 states. [2020-07-07 11:50:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 9299 transitions. [2020-07-07 11:50:04,100 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 9299 transitions. Word has length 487 [2020-07-07 11:50:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:50:04,100 INFO L479 AbstractCegarLoop]: Abstraction has 5660 states and 9299 transitions. [2020-07-07 11:50:04,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:50:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 9299 transitions. [2020-07-07 11:50:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-07-07 11:50:04,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:50:04,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:50:04,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:50:04,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:50:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:50:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2064835293, now seen corresponding path program 1 times [2020-07-07 11:50:04,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:50:04,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662518861] [2020-07-07 11:50:04,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:50:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:05,436 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:50:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:50:05,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662518861] [2020-07-07 11:50:05,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:50:05,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:50:05,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875657211] [2020-07-07 11:50:05,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:50:05,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:50:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:50:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:50:05,800 INFO L87 Difference]: Start difference. First operand 5660 states and 9299 transitions. Second operand 4 states. [2020-07-07 11:50:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:50:23,422 INFO L93 Difference]: Finished difference Result 16304 states and 26694 transitions. [2020-07-07 11:50:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:50:23,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 488 [2020-07-07 11:50:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:50:23,462 INFO L225 Difference]: With dead ends: 16304 [2020-07-07 11:50:23,462 INFO L226 Difference]: Without dead ends: 11043 [2020-07-07 11:50:23,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:50:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2020-07-07 11:50:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 10993. [2020-07-07 11:50:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10993 states. [2020-07-07 11:50:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10993 states to 10993 states and 17977 transitions. [2020-07-07 11:50:23,917 INFO L78 Accepts]: Start accepts. Automaton has 10993 states and 17977 transitions. Word has length 488 [2020-07-07 11:50:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:50:23,918 INFO L479 AbstractCegarLoop]: Abstraction has 10993 states and 17977 transitions. [2020-07-07 11:50:23,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:50:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10993 states and 17977 transitions. [2020-07-07 11:50:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-07-07 11:50:23,941 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:50:23,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:50:23,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:50:23,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:50:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:50:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1928250536, now seen corresponding path program 1 times [2020-07-07 11:50:23,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:50:23,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318057748] [2020-07-07 11:50:23,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:50:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:24,897 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:50:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:50:25,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318057748] [2020-07-07 11:50:25,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:50:25,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:50:25,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300928708] [2020-07-07 11:50:25,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:50:25,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:50:25,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:50:25,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:50:25,047 INFO L87 Difference]: Start difference. First operand 10993 states and 17977 transitions. Second operand 4 states. [2020-07-07 11:50:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:50:43,460 INFO L93 Difference]: Finished difference Result 32723 states and 53486 transitions. [2020-07-07 11:50:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:50:43,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 488 [2020-07-07 11:50:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:50:43,504 INFO L225 Difference]: With dead ends: 32723 [2020-07-07 11:50:43,504 INFO L226 Difference]: Without dead ends: 21874 [2020-07-07 11:50:43,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:50:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21874 states. [2020-07-07 11:50:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21874 to 11091. [2020-07-07 11:50:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11091 states. [2020-07-07 11:50:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11091 states to 11091 states and 18128 transitions. [2020-07-07 11:50:44,024 INFO L78 Accepts]: Start accepts. Automaton has 11091 states and 18128 transitions. Word has length 488 [2020-07-07 11:50:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:50:44,024 INFO L479 AbstractCegarLoop]: Abstraction has 11091 states and 18128 transitions. [2020-07-07 11:50:44,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:50:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 11091 states and 18128 transitions. [2020-07-07 11:50:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-07 11:50:44,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:50:44,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:50:44,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:50:44,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:50:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:50:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash 844567664, now seen corresponding path program 1 times [2020-07-07 11:50:44,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:50:44,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421538888] [2020-07-07 11:50:44,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:50:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:44,951 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:50:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:50:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:50:45,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421538888] [2020-07-07 11:50:45,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:50:45,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:50:45,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023354681] [2020-07-07 11:50:45,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:50:45,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:50:45,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:50:45,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:50:45,343 INFO L87 Difference]: Start difference. First operand 11091 states and 18128 transitions. Second operand 4 states. [2020-07-07 11:51:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:51:04,227 INFO L93 Difference]: Finished difference Result 32858 states and 53667 transitions. [2020-07-07 11:51:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:51:04,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 489 [2020-07-07 11:51:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:51:04,284 INFO L225 Difference]: With dead ends: 32858 [2020-07-07 11:51:04,284 INFO L226 Difference]: Without dead ends: 21991 [2020-07-07 11:51:04,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21991 states. [2020-07-07 11:51:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21991 to 11208. [2020-07-07 11:51:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11208 states. [2020-07-07 11:51:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 18274 transitions. [2020-07-07 11:51:04,795 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 18274 transitions. Word has length 489 [2020-07-07 11:51:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:51:04,795 INFO L479 AbstractCegarLoop]: Abstraction has 11208 states and 18274 transitions. [2020-07-07 11:51:04,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:51:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 18274 transitions. [2020-07-07 11:51:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-07-07 11:51:04,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:51:04,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:51:04,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:51:04,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:51:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:51:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2127508510, now seen corresponding path program 1 times [2020-07-07 11:51:04,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:51:04,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116394399] [2020-07-07 11:51:04,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:51:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:06,112 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:51:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:51:06,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116394399] [2020-07-07 11:51:06,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:51:06,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:51:06,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660556253] [2020-07-07 11:51:06,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:51:06,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:51:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:51:06,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:06,333 INFO L87 Difference]: Start difference. First operand 11208 states and 18274 transitions. Second operand 4 states. [2020-07-07 11:51:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:51:19,026 INFO L93 Difference]: Finished difference Result 21557 states and 34732 transitions. [2020-07-07 11:51:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:51:19,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 490 [2020-07-07 11:51:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:51:19,054 INFO L225 Difference]: With dead ends: 21557 [2020-07-07 11:51:19,054 INFO L226 Difference]: Without dead ends: 14874 [2020-07-07 11:51:19,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:19,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14874 states. [2020-07-07 11:51:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14874 to 12752. [2020-07-07 11:51:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12752 states. [2020-07-07 11:51:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 20834 transitions. [2020-07-07 11:51:19,608 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 20834 transitions. Word has length 490 [2020-07-07 11:51:19,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:51:19,608 INFO L479 AbstractCegarLoop]: Abstraction has 12752 states and 20834 transitions. [2020-07-07 11:51:19,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:51:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 20834 transitions. [2020-07-07 11:51:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-07-07 11:51:19,621 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:51:19,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:51:19,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:51:19,622 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:51:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:51:19,622 INFO L82 PathProgramCache]: Analyzing trace with hash -667258338, now seen corresponding path program 1 times [2020-07-07 11:51:19,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:51:19,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160788132] [2020-07-07 11:51:19,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:51:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:20,931 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:51:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:51:21,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160788132] [2020-07-07 11:51:21,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:51:21,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:51:21,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367541142] [2020-07-07 11:51:21,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:51:21,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:51:21,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:51:21,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:21,422 INFO L87 Difference]: Start difference. First operand 12752 states and 20834 transitions. Second operand 4 states. [2020-07-07 11:51:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:51:41,084 INFO L93 Difference]: Finished difference Result 36492 states and 59503 transitions. [2020-07-07 11:51:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:51:41,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 490 [2020-07-07 11:51:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:51:41,115 INFO L225 Difference]: With dead ends: 36492 [2020-07-07 11:51:41,116 INFO L226 Difference]: Without dead ends: 24709 [2020-07-07 11:51:41,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24709 states. [2020-07-07 11:51:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24709 to 24661. [2020-07-07 11:51:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24661 states. [2020-07-07 11:51:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24661 states to 24661 states and 40123 transitions. [2020-07-07 11:51:42,881 INFO L78 Accepts]: Start accepts. Automaton has 24661 states and 40123 transitions. Word has length 490 [2020-07-07 11:51:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:51:42,882 INFO L479 AbstractCegarLoop]: Abstraction has 24661 states and 40123 transitions. [2020-07-07 11:51:42,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:51:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 24661 states and 40123 transitions. [2020-07-07 11:51:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-07-07 11:51:42,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:51:42,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:51:42,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:51:42,906 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:51:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:51:42,906 INFO L82 PathProgramCache]: Analyzing trace with hash 656055547, now seen corresponding path program 1 times [2020-07-07 11:51:42,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:51:42,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349090746] [2020-07-07 11:51:42,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:51:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:44,927 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:51:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:51:45,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349090746] [2020-07-07 11:51:45,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:51:45,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:51:45,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383860866] [2020-07-07 11:51:45,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:51:45,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:51:45,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:51:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:51:45,124 INFO L87 Difference]: Start difference. First operand 24661 states and 40123 transitions. Second operand 5 states. [2020-07-07 11:52:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:52:03,900 INFO L93 Difference]: Finished difference Result 57139 states and 93438 transitions. [2020-07-07 11:52:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:52:03,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 490 [2020-07-07 11:52:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:52:03,937 INFO L225 Difference]: With dead ends: 57139 [2020-07-07 11:52:03,937 INFO L226 Difference]: Without dead ends: 29180 [2020-07-07 11:52:03,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:52:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29180 states. [2020-07-07 11:52:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29180 to 29123. [2020-07-07 11:52:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29123 states. [2020-07-07 11:52:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29123 states to 29123 states and 47478 transitions. [2020-07-07 11:52:05,166 INFO L78 Accepts]: Start accepts. Automaton has 29123 states and 47478 transitions. Word has length 490 [2020-07-07 11:52:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:52:05,166 INFO L479 AbstractCegarLoop]: Abstraction has 29123 states and 47478 transitions. [2020-07-07 11:52:05,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:52:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 29123 states and 47478 transitions. [2020-07-07 11:52:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-07-07 11:52:05,186 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:52:05,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:52:05,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:52:05,186 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:52:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:52:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1697744443, now seen corresponding path program 1 times [2020-07-07 11:52:05,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:52:05,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296699124] [2020-07-07 11:52:05,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:52:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:06,333 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:52:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:52:06,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296699124] [2020-07-07 11:52:06,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:52:06,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:52:06,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885171233] [2020-07-07 11:52:06,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:52:06,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:52:06,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:52:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:52:06,594 INFO L87 Difference]: Start difference. First operand 29123 states and 47478 transitions. Second operand 4 states. [2020-07-07 11:52:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:52:28,305 INFO L93 Difference]: Finished difference Result 85361 states and 139207 transitions. [2020-07-07 11:52:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:52:28,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2020-07-07 11:52:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:52:28,365 INFO L225 Difference]: With dead ends: 85361 [2020-07-07 11:52:28,365 INFO L226 Difference]: Without dead ends: 57258 [2020-07-07 11:52:28,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:52:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57258 states. [2020-07-07 11:52:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57258 to 57219. [2020-07-07 11:52:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57219 states. [2020-07-07 11:52:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57219 states to 57219 states and 92958 transitions. [2020-07-07 11:52:30,631 INFO L78 Accepts]: Start accepts. Automaton has 57219 states and 92958 transitions. Word has length 492 [2020-07-07 11:52:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:52:30,632 INFO L479 AbstractCegarLoop]: Abstraction has 57219 states and 92958 transitions. [2020-07-07 11:52:30,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:52:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 57219 states and 92958 transitions. [2020-07-07 11:52:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-07-07 11:52:30,687 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:52:30,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:52:30,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:52:30,688 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:52:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:52:30,688 INFO L82 PathProgramCache]: Analyzing trace with hash 12438715, now seen corresponding path program 1 times [2020-07-07 11:52:30,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:52:30,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387385948] [2020-07-07 11:52:30,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:52:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:31,819 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:52:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:52:33,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387385948] [2020-07-07 11:52:33,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:52:33,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:52:33,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006648996] [2020-07-07 11:52:33,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:52:33,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:52:33,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:52:33,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:52:33,372 INFO L87 Difference]: Start difference. First operand 57219 states and 92958 transitions. Second operand 4 states. [2020-07-07 11:52:48,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:52:48,857 INFO L93 Difference]: Finished difference Result 104837 states and 168893 transitions. [2020-07-07 11:52:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:52:48,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2020-07-07 11:52:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:52:48,927 INFO L225 Difference]: With dead ends: 104837 [2020-07-07 11:52:48,928 INFO L226 Difference]: Without dead ends: 74643 [2020-07-07 11:52:48,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:52:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74643 states. [2020-07-07 11:52:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74643 to 68099. [2020-07-07 11:52:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68099 states. [2020-07-07 11:52:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68099 states to 68099 states and 110830 transitions. [2020-07-07 11:52:51,516 INFO L78 Accepts]: Start accepts. Automaton has 68099 states and 110830 transitions. Word has length 492 [2020-07-07 11:52:51,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:52:51,516 INFO L479 AbstractCegarLoop]: Abstraction has 68099 states and 110830 transitions. [2020-07-07 11:52:51,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:52:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 68099 states and 110830 transitions. [2020-07-07 11:52:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-07-07 11:52:51,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:52:51,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:52:51,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:52:51,556 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:52:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:52:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash 888450607, now seen corresponding path program 1 times [2020-07-07 11:52:51,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:52:51,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251868230] [2020-07-07 11:52:51,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:52:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:52,656 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:52:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:52:53,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251868230] [2020-07-07 11:52:53,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:52:53,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:52:53,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933774459] [2020-07-07 11:52:53,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:52:53,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:52:53,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:52:53,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:52:53,296 INFO L87 Difference]: Start difference. First operand 68099 states and 110830 transitions. Second operand 7 states. [2020-07-07 11:52:54,127 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 412 [2020-07-07 11:53:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:53:11,209 INFO L93 Difference]: Finished difference Result 172233 states and 278583 transitions. [2020-07-07 11:53:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:53:11,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-07-07 11:53:11,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:53:11,357 INFO L225 Difference]: With dead ends: 172233 [2020-07-07 11:53:11,358 INFO L226 Difference]: Without dead ends: 128615 [2020-07-07 11:53:11,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:53:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128615 states. [2020-07-07 11:53:19,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128615 to 128435. [2020-07-07 11:53:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128435 states. [2020-07-07 11:53:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128435 states to 128435 states and 208358 transitions. [2020-07-07 11:53:20,012 INFO L78 Accepts]: Start accepts. Automaton has 128435 states and 208358 transitions. Word has length 493 [2020-07-07 11:53:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:53:20,012 INFO L479 AbstractCegarLoop]: Abstraction has 128435 states and 208358 transitions. [2020-07-07 11:53:20,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:53:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 128435 states and 208358 transitions. [2020-07-07 11:53:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-07-07 11:53:20,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:53:20,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:53:20,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:53:20,066 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:53:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:53:20,067 INFO L82 PathProgramCache]: Analyzing trace with hash -973547532, now seen corresponding path program 1 times [2020-07-07 11:53:20,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:53:20,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532327633] [2020-07-07 11:53:20,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:53:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:53:21,568 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:53:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:53:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:53:21,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532327633] [2020-07-07 11:53:21,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:53:21,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:53:21,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99741724] [2020-07-07 11:53:21,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:53:21,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:53:21,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:53:21,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:53:21,909 INFO L87 Difference]: Start difference. First operand 128435 states and 208358 transitions. Second operand 9 states. [2020-07-07 11:53:23,153 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 412 [2020-07-07 11:53:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:53:52,967 INFO L93 Difference]: Finished difference Result 347663 states and 562418 transitions. [2020-07-07 11:53:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 11:53:52,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 493 [2020-07-07 11:53:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:53:53,264 INFO L225 Difference]: With dead ends: 347663 [2020-07-07 11:53:53,265 INFO L226 Difference]: Without dead ends: 244213 [2020-07-07 11:53:53,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:53:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244213 states. [2020-07-07 11:54:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244213 to 158819. [2020-07-07 11:54:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158819 states. [2020-07-07 11:54:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158819 states to 158819 states and 252790 transitions. [2020-07-07 11:54:04,464 INFO L78 Accepts]: Start accepts. Automaton has 158819 states and 252790 transitions. Word has length 493 [2020-07-07 11:54:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:54:04,465 INFO L479 AbstractCegarLoop]: Abstraction has 158819 states and 252790 transitions. [2020-07-07 11:54:04,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:54:04,465 INFO L276 IsEmpty]: Start isEmpty. Operand 158819 states and 252790 transitions. [2020-07-07 11:54:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-07-07 11:54:04,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:54:04,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:54:04,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 11:54:04,531 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:54:04,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:54:04,531 INFO L82 PathProgramCache]: Analyzing trace with hash -128473503, now seen corresponding path program 1 times [2020-07-07 11:54:04,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:54:04,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711395234] [2020-07-07 11:54:04,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:54:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:54:05,932 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:54:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:54:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:54:06,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711395234] [2020-07-07 11:54:06,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:54:06,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:54:06,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045119551] [2020-07-07 11:54:06,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:54:06,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:54:06,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:54:06,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:54:06,193 INFO L87 Difference]: Start difference. First operand 158819 states and 252790 transitions. Second operand 5 states. [2020-07-07 11:54:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:54:42,918 INFO L93 Difference]: Finished difference Result 468628 states and 746275 transitions. [2020-07-07 11:54:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:54:42,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-07-07 11:54:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:54:43,317 INFO L225 Difference]: With dead ends: 468628 [2020-07-07 11:54:43,318 INFO L226 Difference]: Without dead ends: 311245 [2020-07-07 11:54:43,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:54:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311245 states. [2020-07-07 11:55:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311245 to 311199. [2020-07-07 11:55:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311199 states. [2020-07-07 11:55:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311199 states to 311199 states and 494294 transitions. [2020-07-07 11:55:10,259 INFO L78 Accepts]: Start accepts. Automaton has 311199 states and 494294 transitions. Word has length 493 [2020-07-07 11:55:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:55:10,259 INFO L479 AbstractCegarLoop]: Abstraction has 311199 states and 494294 transitions. [2020-07-07 11:55:10,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:55:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 311199 states and 494294 transitions. [2020-07-07 11:55:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-07-07 11:55:10,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:55:10,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:55:10,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 11:55:10,413 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:55:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:55:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash -983128544, now seen corresponding path program 1 times [2020-07-07 11:55:10,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:55:10,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504651608] [2020-07-07 11:55:10,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:55:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:55:12,079 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:55:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:55:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:55:12,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504651608] [2020-07-07 11:55:12,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:55:12,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:55:12,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570532453] [2020-07-07 11:55:12,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:55:12,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:55:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:55:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:55:12,316 INFO L87 Difference]: Start difference. First operand 311199 states and 494294 transitions. Second operand 4 states. [2020-07-07 11:56:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:56:16,991 INFO L93 Difference]: Finished difference Result 919187 states and 1458599 transitions. [2020-07-07 11:56:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:56:16,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2020-07-07 11:56:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:56:17,772 INFO L225 Difference]: With dead ends: 919187 [2020-07-07 11:56:17,772 INFO L226 Difference]: Without dead ends: 612667 [2020-07-07 11:56:18,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:56:19,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612667 states. [2020-07-07 11:57:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612667 to 612630. [2020-07-07 11:57:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612630 states. [2020-07-07 11:57:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612630 states to 612630 states and 969506 transitions. [2020-07-07 11:57:17,371 INFO L78 Accepts]: Start accepts. Automaton has 612630 states and 969506 transitions. Word has length 494 [2020-07-07 11:57:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:57:17,371 INFO L479 AbstractCegarLoop]: Abstraction has 612630 states and 969506 transitions. [2020-07-07 11:57:17,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:57:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 612630 states and 969506 transitions. [2020-07-07 11:57:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-07-07 11:57:19,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:57:19,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:57:19,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 11:57:19,193 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:57:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:57:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash 622715965, now seen corresponding path program 1 times [2020-07-07 11:57:19,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:57:19,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555845079] [2020-07-07 11:57:19,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:57:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:57:20,626 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:57:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:57:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:57:20,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555845079] [2020-07-07 11:57:20,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:57:20,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:57:20,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536685491] [2020-07-07 11:57:20,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:57:20,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:57:20,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:57:20,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:57:20,786 INFO L87 Difference]: Start difference. First operand 612630 states and 969506 transitions. Second operand 5 states. [2020-07-07 11:58:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:58:36,140 INFO L93 Difference]: Finished difference Result 1318219 states and 2090548 transitions. [2020-07-07 11:58:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:58:36,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2020-07-07 11:58:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:58:36,922 INFO L225 Difference]: With dead ends: 1318219 [2020-07-07 11:58:36,923 INFO L226 Difference]: Without dead ends: 661987 [2020-07-07 11:58:37,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:58:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661987 states. [2020-07-07 11:59:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661987 to 661873. [2020-07-07 11:59:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661873 states. [2020-07-07 11:59:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661873 states to 661873 states and 1046549 transitions. [2020-07-07 11:59:48,182 INFO L78 Accepts]: Start accepts. Automaton has 661873 states and 1046549 transitions. Word has length 494 [2020-07-07 11:59:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:59:48,183 INFO L479 AbstractCegarLoop]: Abstraction has 661873 states and 1046549 transitions. [2020-07-07 11:59:48,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:59:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 661873 states and 1046549 transitions. [2020-07-07 11:59:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-07-07 11:59:48,504 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:59:48,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:59:48,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 11:59:48,505 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:59:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:59:48,505 INFO L82 PathProgramCache]: Analyzing trace with hash -340986835, now seen corresponding path program 1 times [2020-07-07 11:59:48,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:59:48,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501003962] [2020-07-07 11:59:48,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:59:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:59:50,447 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 406 [2020-07-07 11:59:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:59:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:59:50,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501003962] [2020-07-07 11:59:50,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:59:50,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:59:50,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604503671] [2020-07-07 11:59:50,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:59:50,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:59:50,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:59:50,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:59:50,676 INFO L87 Difference]: Start difference. First operand 661873 states and 1046549 transitions. Second operand 4 states.