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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 01:00:33,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 01:00:33,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 01:00:33,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 01:00:33,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 01:00:33,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 01:00:33,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 01:00:33,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 01:00:33,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 01:00:33,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 01:00:33,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 01:00:33,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 01:00:33,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 01:00:33,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 01:00:33,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 01:00:33,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 01:00:33,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 01:00:33,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 01:00:33,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 01:00:33,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 01:00:33,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 01:00:33,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 01:00:33,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 01:00:33,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 01:00:33,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 01:00:33,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 01:00:33,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 01:00:33,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 01:00:33,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 01:00:33,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 01:00:33,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 01:00:33,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 01:00:33,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 01:00:33,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 01:00:33,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 01:00:33,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 01:00:33,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 01:00:33,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 01:00:33,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 01:00:33,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 01:00:33,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 01:00:33,648 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 [2019-10-07 01:00:33,679 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 01:00:33,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 01:00:33,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 01:00:33,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 01:00:33,684 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 01:00:33,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 01:00:33,685 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 01:00:33,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 01:00:33,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 01:00:33,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 01:00:33,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 01:00:33,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 01:00:33,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 01:00:33,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 01:00:33,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 01:00:33,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 01:00:33,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 01:00:33,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 01:00:33,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 01:00:33,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 01:00:33,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 01:00:33,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 01:00:33,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 01:00:33,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 01:00:33,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 01:00:33,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 01:00:33,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 01:00:33,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 01:00:33,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 01:00:33,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 01:00:34,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 01:00:34,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 01:00:34,011 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 01:00:34,011 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 01:00:34,012 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label53.c [2019-10-07 01:00:34,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509f4ef80/fff23de8716148d191aa74273b258863/FLAGdf4fc2f01 [2019-10-07 01:00:34,796 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 01:00:34,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label53.c [2019-10-07 01:00:34,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509f4ef80/fff23de8716148d191aa74273b258863/FLAGdf4fc2f01 [2019-10-07 01:00:34,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509f4ef80/fff23de8716148d191aa74273b258863 [2019-10-07 01:00:34,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 01:00:34,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 01:00:34,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:34,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 01:00:34,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 01:00:34,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:00:34" (1/1) ... [2019-10-07 01:00:34,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:34, skipping insertion in model container [2019-10-07 01:00:34,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:00:34" (1/1) ... [2019-10-07 01:00:34,926 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 01:00:35,082 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 01:00:36,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:36,557 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 01:00:37,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:37,171 INFO L192 MainTranslator]: Completed translation [2019-10-07 01:00:37,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37 WrapperNode [2019-10-07 01:00:37,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:37,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 01:00:37,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 01:00:37,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 01:00:37,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (1/1) ... [2019-10-07 01:00:37,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 01:00:37,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 01:00:37,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 01:00:37,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 01:00:37,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (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 [2019-10-07 01:00:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 01:00:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 01:00:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 01:00:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 01:00:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 01:00:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 01:00:37,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 01:00:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 01:00:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 01:00:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 01:00:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 01:00:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 01:00:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 01:00:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 01:00:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 01:00:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 01:00:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 01:00:42,522 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 01:00:42,522 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 01:00:42,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:42 BoogieIcfgContainer [2019-10-07 01:00:42,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 01:00:42,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 01:00:42,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 01:00:42,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 01:00:42,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:00:34" (1/3) ... [2019-10-07 01:00:42,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3281f18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:42, skipping insertion in model container [2019-10-07 01:00:42,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:37" (2/3) ... [2019-10-07 01:00:42,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3281f18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:42, skipping insertion in model container [2019-10-07 01:00:42,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:42" (3/3) ... [2019-10-07 01:00:42,533 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label53.c [2019-10-07 01:00:42,544 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 01:00:42,553 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 01:00:42,566 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 01:00:42,603 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 01:00:42,603 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 01:00:42,603 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 01:00:42,603 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 01:00:42,603 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 01:00:42,604 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 01:00:42,604 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 01:00:42,604 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 01:00:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-07 01:00:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-07 01:00:42,697 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:42,699 INFO L385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:42,702 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:42,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1899131239, now seen corresponding path program 1 times [2019-10-07 01:00:42,718 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:42,718 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:42,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:42,720 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:44,915 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:44,916 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:44,916 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 01:00:44,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:44,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:44,939 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-07 01:00:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:49,396 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-07 01:00:49,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:00:49,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-07 01:00:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:49,440 INFO L225 Difference]: With dead ends: 2343 [2019-10-07 01:00:49,440 INFO L226 Difference]: Without dead ends: 1555 [2019-10-07 01:00:49,450 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-07 01:00:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-07 01:00:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-07 01:00:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 3003 transitions. [2019-10-07 01:00:49,602 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 3003 transitions. Word has length 767 [2019-10-07 01:00:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:49,605 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 3003 transitions. [2019-10-07 01:00:49,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:00:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 3003 transitions. [2019-10-07 01:00:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-10-07 01:00:49,633 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:49,633 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:49,634 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1537901848, now seen corresponding path program 1 times [2019-10-07 01:00:49,635 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:49,635 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:49,635 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:49,635 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:51,962 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:51,962 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:51,962 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 01:00:51,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:51,966 INFO L87 Difference]: Start difference. First operand 1555 states and 3003 transitions. Second operand 3 states. [2019-10-07 01:00:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:56,323 INFO L93 Difference]: Finished difference Result 4653 states and 9046 transitions. [2019-10-07 01:00:56,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:00:56,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 775 [2019-10-07 01:00:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:56,346 INFO L225 Difference]: With dead ends: 4653 [2019-10-07 01:00:56,347 INFO L226 Difference]: Without dead ends: 3103 [2019-10-07 01:00:56,355 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2019-10-07 01:00:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 3103. [2019-10-07 01:00:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2019-10-07 01:00:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 5509 transitions. [2019-10-07 01:00:56,459 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 5509 transitions. Word has length 775 [2019-10-07 01:00:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:56,461 INFO L462 AbstractCegarLoop]: Abstraction has 3103 states and 5509 transitions. [2019-10-07 01:00:56,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:00:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 5509 transitions. [2019-10-07 01:00:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2019-10-07 01:00:56,476 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:56,477 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:56,477 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1772118306, now seen corresponding path program 1 times [2019-10-07 01:00:56,479 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:56,479 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:56,480 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:56,481 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:58,700 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:58,700 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:00:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:00:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:58,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 01:00:59,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:00:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:59,646 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:00,097 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 01:01:00,097 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-07 01:01:00,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 01:01:00,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 01:01:00,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 01:01:00,100 INFO L87 Difference]: Start difference. First operand 3103 states and 5509 transitions. Second operand 4 states. [2019-10-07 01:01:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:06,925 INFO L93 Difference]: Finished difference Result 12393 states and 22453 transitions. [2019-10-07 01:01:06,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 01:01:06,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 786 [2019-10-07 01:01:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:06,990 INFO L225 Difference]: With dead ends: 12393 [2019-10-07 01:01:06,990 INFO L226 Difference]: Without dead ends: 9295 [2019-10-07 01:01:07,003 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 01:01:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2019-10-07 01:01:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 9295. [2019-10-07 01:01:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9295 states. [2019-10-07 01:01:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 14667 transitions. [2019-10-07 01:01:07,305 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 14667 transitions. Word has length 786 [2019-10-07 01:01:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:07,308 INFO L462 AbstractCegarLoop]: Abstraction has 9295 states and 14667 transitions. [2019-10-07 01:01:07,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 01:01:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 14667 transitions. [2019-10-07 01:01:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2019-10-07 01:01:07,463 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:07,465 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:01:07,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:07,673 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:07,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1241031794, now seen corresponding path program 1 times [2019-10-07 01:01:07,674 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:07,674 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:07,675 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:07,675 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 54 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:10,085 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:10,085 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:10,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 01:01:10,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:11,342 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:12,175 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 01:01:12,176 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-07 01:01:12,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:01:12,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:01:12,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-07 01:01:12,178 INFO L87 Difference]: Start difference. First operand 9295 states and 14667 transitions. Second operand 3 states. [2019-10-07 01:01:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:01:16,755 INFO L93 Difference]: Finished difference Result 27873 states and 44936 transitions. [2019-10-07 01:01:16,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:01:16,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1055 [2019-10-07 01:01:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:01:16,849 INFO L225 Difference]: With dead ends: 27873 [2019-10-07 01:01:16,849 INFO L226 Difference]: Without dead ends: 18583 [2019-10-07 01:01:16,876 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 2111 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-07 01:01:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18583 states. [2019-10-07 01:01:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18583 to 18583. [2019-10-07 01:01:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18583 states. [2019-10-07 01:01:17,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18583 states to 18583 states and 28292 transitions. [2019-10-07 01:01:17,343 INFO L78 Accepts]: Start accepts. Automaton has 18583 states and 28292 transitions. Word has length 1055 [2019-10-07 01:01:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:01:17,345 INFO L462 AbstractCegarLoop]: Abstraction has 18583 states and 28292 transitions. [2019-10-07 01:01:17,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:01:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18583 states and 28292 transitions. [2019-10-07 01:01:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1295 [2019-10-07 01:01:17,414 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:01:17,415 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:01:17,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:17,622 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:01:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:01:17,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1282702029, now seen corresponding path program 1 times [2019-10-07 01:01:17,623 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:01:17,623 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:17,624 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:17,624 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:01:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:01:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 521 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:19,780 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:01:19,780 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:01:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:01:20,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 01:01:20,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:01:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 521 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:21,494 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:01:21,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 01:01:21,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 01:01:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 521 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:01:23,077 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 01:01:23,129 INFO L162 IcfgInterpreter]: Started Sifa with 777 locations of interest [2019-10-07 01:01:23,129 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 01:01:23,139 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 01:01:23,148 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 01:01:23,148 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 01:01:23,479 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-10-07 01:01:24,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:01:24,246 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 01:01:24,254 INFO L168 Benchmark]: Toolchain (without parser) took 49346.89 ms. Allocated memory was 143.1 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 86.1 MB in the beginning and 946.9 MB in the end (delta: -860.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2019-10-07 01:01:24,255 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 01:01:24,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2265.10 ms. Allocated memory was 143.1 MB in the beginning and 266.3 MB in the end (delta: 123.2 MB). Free memory was 85.9 MB in the beginning and 185.8 MB in the end (delta: -99.9 MB). Peak memory consumption was 118.7 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:24,257 INFO L168 Benchmark]: Boogie Preprocessor took 275.12 ms. Allocated memory is still 266.3 MB. Free memory was 185.8 MB in the beginning and 156.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:24,258 INFO L168 Benchmark]: RCFGBuilder took 5077.57 ms. Allocated memory was 266.3 MB in the beginning and 413.1 MB in the end (delta: 146.8 MB). Free memory was 156.4 MB in the beginning and 117.5 MB in the end (delta: 38.9 MB). Peak memory consumption was 196.6 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:24,259 INFO L168 Benchmark]: TraceAbstraction took 41724.52 ms. Allocated memory was 413.1 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 117.5 MB in the beginning and 946.9 MB in the end (delta: -829.4 MB). Peak memory consumption was 865.7 MB. Max. memory is 7.1 GB. [2019-10-07 01:01:24,266 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2265.10 ms. Allocated memory was 143.1 MB in the beginning and 266.3 MB in the end (delta: 123.2 MB). Free memory was 85.9 MB in the beginning and 185.8 MB in the end (delta: -99.9 MB). Peak memory consumption was 118.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 275.12 ms. Allocated memory is still 266.3 MB. Free memory was 185.8 MB in the beginning and 156.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5077.57 ms. Allocated memory was 266.3 MB in the beginning and 413.1 MB in the end (delta: 146.8 MB). Free memory was 156.4 MB in the beginning and 117.5 MB in the end (delta: 38.9 MB). Peak memory consumption was 196.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41724.52 ms. Allocated memory was 413.1 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 117.5 MB in the beginning and 946.9 MB in the end (delta: -829.4 MB). Peak memory consumption was 865.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...