java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:29:13,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:29:13,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:29:13,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:29:13,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:29:13,546 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:29:13,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:29:13,550 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:29:13,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:29:13,554 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:29:13,561 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:29:13,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:29:13,562 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:29:13,563 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:29:13,564 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:29:13,565 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:29:13,566 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:29:13,568 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:29:13,569 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:29:13,571 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:29:13,572 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:29:13,573 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:29:13,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:29:13,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:29:13,576 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:29:13,576 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:29:13,577 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:29:13,578 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:29:13,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:29:13,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:29:13,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:29:13,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:29:13,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:29:13,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:29:13,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:29:13,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:29:13,583 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:29:13,604 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:29:13,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:29:13,606 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:29:13,606 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:29:13,606 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:29:13,606 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:29:13,606 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:29:13,607 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:29:13,607 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:29:13,607 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:29:13,607 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:29:13,608 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:29:13,608 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:29:13,608 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:29:13,608 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:29:13,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:29:13,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:29:13,609 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:29:13,609 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:29:13,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:29:13,610 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:29:13,610 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:29:13,610 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:29:13,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:29:13,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:29:13,611 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:29:13,611 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:29:13,611 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:29:13,611 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:29:13,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:29:13,611 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:29:13,612 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:29:13,612 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:29:13,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:29:13,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:29:13,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:29:13,692 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:29:13,692 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:29:13,693 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-09-14 17:29:14,057 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6db7972/0c3b1b65a0b54c179ff65eaf3ec4d911/FLAG83fd334e4 [2018-09-14 17:29:14,660 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:29:14,661 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-09-14 17:29:14,697 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6db7972/0c3b1b65a0b54c179ff65eaf3ec4d911/FLAG83fd334e4 [2018-09-14 17:29:14,713 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f6db7972/0c3b1b65a0b54c179ff65eaf3ec4d911 [2018-09-14 17:29:14,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:29:14,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:29:14,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:29:14,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:29:14,737 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:29:14,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:29:14" (1/1) ... [2018-09-14 17:29:14,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2073f54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:14, skipping insertion in model container [2018-09-14 17:29:14,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:29:14" (1/1) ... [2018-09-14 17:29:14,755 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:29:16,190 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:29:16,212 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:29:16,952 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:29:17,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17 WrapperNode [2018-09-14 17:29:17,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:29:17,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:29:17,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:29:17,344 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:29:17,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:17,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:29:18,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:29:18,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:29:18,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:29:18,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (1/1) ... [2018-09-14 17:29:18,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:29:18,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:29:18,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:29:18,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:29:18,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (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 [2018-09-14 17:29:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:29:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:29:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:29:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:29:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:29:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:29:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:29:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:29:18,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:29:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:29:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:29:18,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:29:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:29:18,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:29:30,647 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:29:30,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:29:30 BoogieIcfgContainer [2018-09-14 17:29:30,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:29:30,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:29:30,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:29:30,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:29:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:29:14" (1/3) ... [2018-09-14 17:29:30,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681e4308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:29:30, skipping insertion in model container [2018-09-14 17:29:30,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:17" (2/3) ... [2018-09-14 17:29:30,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681e4308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:29:30, skipping insertion in model container [2018-09-14 17:29:30,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:29:30" (3/3) ... [2018-09-14 17:29:30,656 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-09-14 17:29:30,664 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:29:30,673 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:29:30,738 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:29:30,739 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:29:30,739 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:29:30,739 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:29:30,740 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:29:30,740 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:29:30,740 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:29:30,740 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:29:30,740 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:29:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:29:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-14 17:29:30,801 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:30,802 INFO L376 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] [2018-09-14 17:29:30,803 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:30,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2099536220, now seen corresponding path program 1 times [2018-09-14 17:29:30,811 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:30,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:30,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:30,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:30,862 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:31,380 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 17:29:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:31,407 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:31,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:29:31,407 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:31,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:29:31,431 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:29:31,432 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:29:31,434 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-14 17:29:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:50,351 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-09-14 17:29:50,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:29:50,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-14 17:29:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:50,398 INFO L225 Difference]: With dead ends: 4105 [2018-09-14 17:29:50,398 INFO L226 Difference]: Without dead ends: 2979 [2018-09-14 17:29:50,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:29:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-09-14 17:29:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-09-14 17:29:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-09-14 17:29:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-09-14 17:29:50,620 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 54 [2018-09-14 17:29:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:50,621 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-09-14 17:29:50,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:29:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-09-14 17:29:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-14 17:29:50,642 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:50,642 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:29:50,645 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash 5864073, now seen corresponding path program 1 times [2018-09-14 17:29:50,646 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:50,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:50,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:50,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:50,648 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:51,063 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:51,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:29:51,063 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:51,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:29:51,067 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:29:51,067 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:29:51,068 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-09-14 17:30:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:11,224 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-09-14 17:30:11,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:11,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-09-14 17:30:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:11,274 INFO L225 Difference]: With dead ends: 10635 [2018-09-14 17:30:11,275 INFO L226 Difference]: Without dead ends: 7792 [2018-09-14 17:30:11,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:30:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-09-14 17:30:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-09-14 17:30:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-09-14 17:30:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-09-14 17:30:11,530 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 125 [2018-09-14 17:30:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:11,531 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-09-14 17:30:11,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:30:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-09-14 17:30:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-14 17:30:11,537 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:11,538 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:11,538 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:11,538 INFO L82 PathProgramCache]: Analyzing trace with hash 652308344, now seen corresponding path program 1 times [2018-09-14 17:30:11,539 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:11,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:11,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:11,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:11,542 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:12,000 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:30:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:12,093 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:12,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:12,094 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:12,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:12,095 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:12,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:12,095 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-09-14 17:30:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:25,624 INFO L93 Difference]: Finished difference Result 20526 states and 33998 transitions. [2018-09-14 17:30:25,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:25,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-09-14 17:30:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:25,687 INFO L225 Difference]: With dead ends: 20526 [2018-09-14 17:30:25,687 INFO L226 Difference]: Without dead ends: 12803 [2018-09-14 17:30:25,721 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:30:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2018-09-14 17:30:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12725. [2018-09-14 17:30:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12725 states. [2018-09-14 17:30:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 19312 transitions. [2018-09-14 17:30:25,991 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 19312 transitions. Word has length 128 [2018-09-14 17:30:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:25,992 INFO L480 AbstractCegarLoop]: Abstraction has 12725 states and 19312 transitions. [2018-09-14 17:30:25,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:30:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 19312 transitions. [2018-09-14 17:30:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-14 17:30:26,001 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:26,002 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:26,002 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:26,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1098248393, now seen corresponding path program 1 times [2018-09-14 17:30:26,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:26,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:26,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:26,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:26,004 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:26,373 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:26,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:30:26,373 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:26,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:26,374 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:26,374 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:30:26,375 INFO L87 Difference]: Start difference. First operand 12725 states and 19312 transitions. Second operand 5 states. [2018-09-14 17:30:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:40,891 INFO L93 Difference]: Finished difference Result 38442 states and 61981 transitions. [2018-09-14 17:30:40,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:30:40,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-09-14 17:30:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:40,992 INFO L225 Difference]: With dead ends: 38442 [2018-09-14 17:30:40,992 INFO L226 Difference]: Without dead ends: 25723 [2018-09-14 17:30:41,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:30:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25723 states. [2018-09-14 17:30:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25723 to 25421. [2018-09-14 17:30:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25421 states. [2018-09-14 17:30:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25421 states to 25421 states and 37358 transitions. [2018-09-14 17:30:41,637 INFO L78 Accepts]: Start accepts. Automaton has 25421 states and 37358 transitions. Word has length 214 [2018-09-14 17:30:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:41,638 INFO L480 AbstractCegarLoop]: Abstraction has 25421 states and 37358 transitions. [2018-09-14 17:30:41,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:30:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand 25421 states and 37358 transitions. [2018-09-14 17:30:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-09-14 17:30:41,668 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:41,668 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:41,668 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash -426955638, now seen corresponding path program 1 times [2018-09-14 17:30:41,669 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:41,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:41,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:41,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:41,670 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:41,978 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:30:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:30:42,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:42,410 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:30:42,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:42,428 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:42,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-14 17:30:42,972 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:43,284 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:30:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:30:43,707 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:30:43,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:30:43,708 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:43,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:43,709 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:43,710 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:30:43,710 INFO L87 Difference]: Start difference. First operand 25421 states and 37358 transitions. Second operand 5 states. [2018-09-14 17:30:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:58,174 INFO L93 Difference]: Finished difference Result 76579 states and 118634 transitions. [2018-09-14 17:30:58,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:30:58,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2018-09-14 17:30:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:58,465 INFO L225 Difference]: With dead ends: 76579 [2018-09-14 17:30:58,465 INFO L226 Difference]: Without dead ends: 51164 [2018-09-14 17:30:58,693 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 569 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:30:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51164 states. [2018-09-14 17:31:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51164 to 50921. [2018-09-14 17:31:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50921 states. [2018-09-14 17:31:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50921 states to 50921 states and 74458 transitions. [2018-09-14 17:31:00,182 INFO L78 Accepts]: Start accepts. Automaton has 50921 states and 74458 transitions. Word has length 287 [2018-09-14 17:31:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:00,183 INFO L480 AbstractCegarLoop]: Abstraction has 50921 states and 74458 transitions. [2018-09-14 17:31:00,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:31:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 50921 states and 74458 transitions. [2018-09-14 17:31:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-09-14 17:31:00,227 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:00,227 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:00,228 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1293694990, now seen corresponding path program 1 times [2018-09-14 17:31:00,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:00,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:00,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:00,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:00,230 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:00,592 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:31:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:01,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:01,304 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:01,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:01,318 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:01,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:01,878 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:02,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:02,402 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:31:02,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:02,438 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:02,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:03,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:03,334 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:31:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:03,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:31:03,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 17:31:03,883 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:31:03,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:31:03,884 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:31:03,884 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:31:03,884 INFO L87 Difference]: Start difference. First operand 50921 states and 74458 transitions. Second operand 9 states. [2018-09-14 17:31:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:27,257 INFO L93 Difference]: Finished difference Result 190814 states and 352794 transitions. [2018-09-14 17:31:27,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-14 17:31:27,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2018-09-14 17:31:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:28,048 INFO L225 Difference]: With dead ends: 190814 [2018-09-14 17:31:28,048 INFO L226 Difference]: Without dead ends: 139899 [2018-09-14 17:31:28,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1183 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=311, Invalid=1171, Unknown=0, NotChecked=0, Total=1482 [2018-09-14 17:31:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139899 states. [2018-09-14 17:31:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139899 to 139226. [2018-09-14 17:31:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139226 states. [2018-09-14 17:31:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139226 states to 139226 states and 203426 transitions. [2018-09-14 17:31:32,431 INFO L78 Accepts]: Start accepts. Automaton has 139226 states and 203426 transitions. Word has length 296 [2018-09-14 17:31:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:32,431 INFO L480 AbstractCegarLoop]: Abstraction has 139226 states and 203426 transitions. [2018-09-14 17:31:32,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:31:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 139226 states and 203426 transitions. [2018-09-14 17:31:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-14 17:31:32,484 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:32,484 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:32,485 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:32,485 INFO L82 PathProgramCache]: Analyzing trace with hash 825449335, now seen corresponding path program 1 times [2018-09-14 17:31:32,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:32,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:32,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:32,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:32,487 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:32,812 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-09-14 17:31:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-14 17:31:32,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:32,849 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:32,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:32,856 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:32,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 17:31:33,171 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-14 17:31:33,358 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:31:33,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-14 17:31:33,358 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:33,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:31:33,359 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:31:33,360 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:31:33,360 INFO L87 Difference]: Start difference. First operand 139226 states and 203426 transitions. Second operand 3 states. [2018-09-14 17:31:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:47,524 INFO L93 Difference]: Finished difference Result 299437 states and 448956 transitions. [2018-09-14 17:31:47,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:31:47,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2018-09-14 17:31:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:48,279 INFO L225 Difference]: With dead ends: 299437 [2018-09-14 17:31:48,279 INFO L226 Difference]: Without dead ends: 181122 [2018-09-14 17:31:48,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:31:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181122 states. [2018-09-14 17:31:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181122 to 176273. [2018-09-14 17:31:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176273 states. [2018-09-14 17:31:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176273 states to 176273 states and 243572 transitions. [2018-09-14 17:31:52,377 INFO L78 Accepts]: Start accepts. Automaton has 176273 states and 243572 transitions. Word has length 343 [2018-09-14 17:31:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:52,377 INFO L480 AbstractCegarLoop]: Abstraction has 176273 states and 243572 transitions. [2018-09-14 17:31:52,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:31:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 176273 states and 243572 transitions. [2018-09-14 17:31:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-09-14 17:31:52,444 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:52,445 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:52,445 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash -529324942, now seen corresponding path program 1 times [2018-09-14 17:31:52,446 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:52,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:52,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:52,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:52,447 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 219 proven. 74 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-14 17:31:52,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:52,995 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:53,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:53,004 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:53,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-14 17:31:53,339 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 219 proven. 74 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-14 17:31:53,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:53,579 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:31:55,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:55,234 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:55,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 235 proven. 90 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 17:31:55,823 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 321 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 17:31:56,157 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:31:56,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 4, 4] total 19 [2018-09-14 17:31:56,158 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:31:56,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 17:31:56,160 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 17:31:56,160 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:31:56,161 INFO L87 Difference]: Start difference. First operand 176273 states and 243572 transitions. Second operand 12 states. [2018-09-14 17:32:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:45,653 INFO L93 Difference]: Finished difference Result 579553 states and 837122 transitions. [2018-09-14 17:32:45,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-14 17:32:45,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 420 [2018-09-14 17:32:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:47,422 INFO L225 Difference]: With dead ends: 579553 [2018-09-14 17:32:47,422 INFO L226 Difference]: Without dead ends: 383737 [2018-09-14 17:32:48,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1707 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=719, Invalid=2587, Unknown=0, NotChecked=0, Total=3306 [2018-09-14 17:32:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383737 states. [2018-09-14 17:32:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383737 to 368938. [2018-09-14 17:32:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368938 states. Received shutdown request... [2018-09-14 17:32:56,597 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:32:56,607 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:32:56,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:32:56 BoogieIcfgContainer [2018-09-14 17:32:56,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:32:56,609 INFO L168 Benchmark]: Toolchain (without parser) took 221883.01 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:32:56,610 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:32:56,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2613.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:32:56,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 1129.94 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:32:56,617 INFO L168 Benchmark]: Boogie Preprocessor took 415.66 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:32:56,619 INFO L168 Benchmark]: RCFGBuilder took 11758.40 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 148.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -13.3 MB). Peak memory consumption was 712.2 MB. Max. memory is 7.1 GB. [2018-09-14 17:32:56,620 INFO L168 Benchmark]: TraceAbstraction took 205959.07 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -712.7 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-09-14 17:32:56,627 INFO L336 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2613.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1129.94 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 415.66 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11758.40 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 148.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -13.3 MB). Peak memory consumption was 712.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205959.07 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -712.7 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while ReachableStatesComputation was computing reachable states (294798 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 205.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 174.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4721 SDtfs, 49903 SDslu, 5467 SDs, 0 SdLazy, 67256 SolverSat, 20091 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 137.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4292 GetRequests, 4156 SyntacticMatches, 7 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176273occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6338 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 3929 NumberOfCodeBlocks, 3929 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5971 ConstructedInterpolants, 0 QuantifiedInterpolants, 4548092 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3452 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 3762/4156 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label10_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-32-56-655.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label10_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-32-56-655.csv Completed graceful shutdown