java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:24:05,550 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:24:05,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:24:05,571 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:24:05,571 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:24:05,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:24:05,575 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:24:05,577 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:24:05,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:24:05,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:24:05,589 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:24:05,590 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:24:05,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:24:05,594 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:24:05,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:24:05,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:24:05,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:24:05,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:24:05,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:24:05,608 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:24:05,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:24:05,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:24:05,618 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:24:05,633 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:24:05,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:24:05,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:24:05,649 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:24:05,650 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:24:05,650 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:24:05,650 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:24:05,650 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:24:05,650 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:24:05,651 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:24:05,651 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:24:05,651 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:24:05,651 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:24:05,652 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:24:05,652 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:24:05,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:24:05,652 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:24:05,653 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:24:05,653 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:24:05,653 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:24:05,653 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:24:05,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:24:05,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:24:05,654 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:24:05,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:24:05,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:24:05,654 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:24:05,655 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:24:05,655 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:24:05,655 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:24:05,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:24:05,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:24:05,656 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:24:05,656 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:24:05,656 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:24:05,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:24:05,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:24:05,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:24:05,723 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:24:05,724 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:24:05,725 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-24 02:24:05,792 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/191dc022d/5cae88d5aa8047b8b6582e100ce187a3/FLAG9b1845354 [2018-10-24 02:24:06,736 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:24:06,737 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-24 02:24:06,786 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/191dc022d/5cae88d5aa8047b8b6582e100ce187a3/FLAG9b1845354 [2018-10-24 02:24:06,801 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/191dc022d/5cae88d5aa8047b8b6582e100ce187a3 [2018-10-24 02:24:06,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:24:06,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:24:06,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:24:06,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:24:06,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:24:06,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:06" (1/1) ... [2018-10-24 02:24:06,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab4c919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:06, skipping insertion in model container [2018-10-24 02:24:06,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:06" (1/1) ... [2018-10-24 02:24:06,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:24:07,098 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:24:09,263 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:24:09,268 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:24:10,703 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:24:10,761 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:24:10,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10 WrapperNode [2018-10-24 02:24:10,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:24:10,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:24:10,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:24:10,764 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:24:10,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:10,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:24:11,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:24:11,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:24:11,547 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:24:11,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:11,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... [2018-10-24 02:24:12,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:24:12,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:24:12,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:24:12,040 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:24:12,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 02:24:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:24:12,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:24:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 02:24:12,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 02:24:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 02:24:12,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 02:24:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 02:24:12,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 02:24:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:24:12,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:24:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:24:12,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:24:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:24:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:24:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:24:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:24:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:24:12,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:24:30,008 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:24:30,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:30 BoogieIcfgContainer [2018-10-24 02:24:30,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:24:30,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:24:30,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:24:30,013 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:24:30,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:06" (1/3) ... [2018-10-24 02:24:30,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c931368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:30, skipping insertion in model container [2018-10-24 02:24:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:10" (2/3) ... [2018-10-24 02:24:30,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c931368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:30, skipping insertion in model container [2018-10-24 02:24:30,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:30" (3/3) ... [2018-10-24 02:24:30,017 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label25_true-unreach-call.c [2018-10-24 02:24:30,027 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:24:30,040 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:24:30,059 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:24:30,117 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:24:30,118 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:24:30,118 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:24:30,118 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:24:30,118 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:24:30,118 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:24:30,119 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:24:30,119 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:24:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 02:24:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 02:24:30,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:24:30,200 INFO L375 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] [2018-10-24 02:24:30,203 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:24:30,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:24:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2043790486, now seen corresponding path program 1 times [2018-10-24 02:24:30,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:24:30,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:30,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:24:30,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:30,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:24:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:24:30,762 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 02:24:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:24:30,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:24:30,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:24:30,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:24:30,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:24:30,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:24:30,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:24:30,810 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-24 02:24:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:24:56,792 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-10-24 02:24:56,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:24:56,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-24 02:24:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:24:56,858 INFO L225 Difference]: With dead ends: 6465 [2018-10-24 02:24:56,858 INFO L226 Difference]: Without dead ends: 4681 [2018-10-24 02:24:56,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:24:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-10-24 02:24:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-10-24 02:24:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-10-24 02:24:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-10-24 02:24:57,117 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 43 [2018-10-24 02:24:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:24:57,118 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-10-24 02:24:57,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:24:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-10-24 02:24:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 02:24:57,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:24:57,131 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:24:57,132 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:24:57,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:24:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash 96835924, now seen corresponding path program 1 times [2018-10-24 02:24:57,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:24:57,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:57,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:24:57,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:57,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:24:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:24:57,531 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:24:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:24:57,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:24:57,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:24:57,935 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:24:57,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:24:57,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:24:57,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:24:57,939 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-10-24 02:25:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:25:27,268 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-10-24 02:25:27,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:25:27,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 02:25:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:25:27,318 INFO L225 Difference]: With dead ends: 12097 [2018-10-24 02:25:27,318 INFO L226 Difference]: Without dead ends: 8903 [2018-10-24 02:25:27,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:25:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-10-24 02:25:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-10-24 02:25:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-10-24 02:25:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-10-24 02:25:27,592 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 115 [2018-10-24 02:25:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:25:27,594 INFO L481 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-10-24 02:25:27,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:25:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-10-24 02:25:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 02:25:27,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:27,604 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:25:27,604 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:27,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash 554705181, now seen corresponding path program 1 times [2018-10-24 02:25:27,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:27,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:27,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:27,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:27,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:27,896 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:25:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:25:28,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:25:28,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:25:28,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:25:28,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:25:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:25:28,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:25:28,015 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-10-24 02:25:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:25:58,188 INFO L93 Difference]: Finished difference Result 29443 states and 43438 transitions. [2018-10-24 02:25:58,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:25:58,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 02:25:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:25:58,256 INFO L225 Difference]: With dead ends: 29443 [2018-10-24 02:25:58,256 INFO L226 Difference]: Without dead ends: 20603 [2018-10-24 02:25:58,295 INFO L605 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 [2018-10-24 02:25:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20603 states. [2018-10-24 02:25:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20603 to 20447. [2018-10-24 02:25:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20447 states. [2018-10-24 02:25:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20447 states to 20447 states and 28690 transitions. [2018-10-24 02:25:58,801 INFO L78 Accepts]: Start accepts. Automaton has 20447 states and 28690 transitions. Word has length 117 [2018-10-24 02:25:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:25:58,803 INFO L481 AbstractCegarLoop]: Abstraction has 20447 states and 28690 transitions. [2018-10-24 02:25:58,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:25:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 20447 states and 28690 transitions. [2018-10-24 02:25:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 02:25:58,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:58,812 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:25:58,812 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:58,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:58,812 INFO L82 PathProgramCache]: Analyzing trace with hash -730954474, now seen corresponding path program 1 times [2018-10-24 02:25:58,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:58,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:58,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:58,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:58,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:25:59,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:25:59,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:25:59,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:25:59,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:25:59,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:25:59,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:25:59,308 INFO L87 Difference]: Start difference. First operand 20447 states and 28690 transitions. Second operand 6 states. [2018-10-24 02:26:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:19,844 INFO L93 Difference]: Finished difference Result 62296 states and 89747 transitions. [2018-10-24 02:26:19,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 02:26:19,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 02:26:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:19,983 INFO L225 Difference]: With dead ends: 62296 [2018-10-24 02:26:19,983 INFO L226 Difference]: Without dead ends: 41855 [2018-10-24 02:26:20,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:26:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41855 states. [2018-10-24 02:26:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41855 to 41518. [2018-10-24 02:26:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41518 states. [2018-10-24 02:26:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41518 states to 41518 states and 57765 transitions. [2018-10-24 02:26:20,933 INFO L78 Accepts]: Start accepts. Automaton has 41518 states and 57765 transitions. Word has length 125 [2018-10-24 02:26:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:20,934 INFO L481 AbstractCegarLoop]: Abstraction has 41518 states and 57765 transitions. [2018-10-24 02:26:20,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:26:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 41518 states and 57765 transitions. [2018-10-24 02:26:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 02:26:20,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:20,938 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:20,938 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:20,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1382979436, now seen corresponding path program 1 times [2018-10-24 02:26:20,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:20,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:20,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:20,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:20,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:21,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:21,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:26:21,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:21,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:26:21,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:26:21,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:26:21,305 INFO L87 Difference]: Start difference. First operand 41518 states and 57765 transitions. Second operand 5 states. [2018-10-24 02:26:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:54,585 INFO L93 Difference]: Finished difference Result 125891 states and 180474 transitions. [2018-10-24 02:26:54,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:26:54,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-24 02:26:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:54,842 INFO L225 Difference]: With dead ends: 125891 [2018-10-24 02:26:54,843 INFO L226 Difference]: Without dead ends: 84379 [2018-10-24 02:26:54,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:26:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84379 states. [2018-10-24 02:26:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84379 to 83183. [2018-10-24 02:26:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83183 states. [2018-10-24 02:26:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83183 states to 83183 states and 107218 transitions. [2018-10-24 02:26:56,241 INFO L78 Accepts]: Start accepts. Automaton has 83183 states and 107218 transitions. Word has length 145 [2018-10-24 02:26:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:56,242 INFO L481 AbstractCegarLoop]: Abstraction has 83183 states and 107218 transitions. [2018-10-24 02:26:56,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:26:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 83183 states and 107218 transitions. [2018-10-24 02:26:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 02:26:56,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:56,247 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:56,248 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:56,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash 544420257, now seen corresponding path program 1 times [2018-10-24 02:26:56,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:56,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:56,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:56,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:56,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:56,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:56,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:26:56,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:56,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:26:56,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:26:56,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:26:56,527 INFO L87 Difference]: Start difference. First operand 83183 states and 107218 transitions. Second operand 6 states. [2018-10-24 02:27:14,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:27:14,625 INFO L93 Difference]: Finished difference Result 190969 states and 256507 transitions. [2018-10-24 02:27:14,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:27:14,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-24 02:27:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:27:14,995 INFO L225 Difference]: With dead ends: 190969 [2018-10-24 02:27:14,995 INFO L226 Difference]: Without dead ends: 107792 [2018-10-24 02:27:15,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:27:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107792 states. [2018-10-24 02:27:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107792 to 107023. [2018-10-24 02:27:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107023 states. [2018-10-24 02:27:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107023 states to 107023 states and 138049 transitions. [2018-10-24 02:27:17,325 INFO L78 Accepts]: Start accepts. Automaton has 107023 states and 138049 transitions. Word has length 208 [2018-10-24 02:27:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:27:17,326 INFO L481 AbstractCegarLoop]: Abstraction has 107023 states and 138049 transitions. [2018-10-24 02:27:17,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:27:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 107023 states and 138049 transitions. [2018-10-24 02:27:17,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-24 02:27:17,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:27:17,340 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:27:17,341 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:27:17,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:17,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1346825870, now seen corresponding path program 1 times [2018-10-24 02:27:17,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:27:17,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:17,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:27:17,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:17,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:27:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:27:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:27:17,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:27:17,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:27:17,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:27:17,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:27:17,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:27:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:27:17,867 INFO L87 Difference]: Start difference. First operand 107023 states and 138049 transitions. Second operand 4 states. [2018-10-24 02:27:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:27:40,212 INFO L93 Difference]: Finished difference Result 302091 states and 408243 transitions. [2018-10-24 02:27:40,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:27:40,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 530 [2018-10-24 02:27:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:27:40,818 INFO L225 Difference]: With dead ends: 302091 [2018-10-24 02:27:40,819 INFO L226 Difference]: Without dead ends: 195074 [2018-10-24 02:27:41,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:27:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195074 states. [2018-10-24 02:27:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195074 to 194769. [2018-10-24 02:27:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194769 states. [2018-10-24 02:27:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194769 states to 194769 states and 253327 transitions. [2018-10-24 02:27:44,470 INFO L78 Accepts]: Start accepts. Automaton has 194769 states and 253327 transitions. Word has length 530 [2018-10-24 02:27:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:27:44,471 INFO L481 AbstractCegarLoop]: Abstraction has 194769 states and 253327 transitions. [2018-10-24 02:27:44,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:27:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 194769 states and 253327 transitions. [2018-10-24 02:27:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-10-24 02:27:44,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:27:44,503 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:27:44,503 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:27:44,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:44,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1115290536, now seen corresponding path program 1 times [2018-10-24 02:27:44,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:27:44,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:44,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:27:44,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:44,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:27:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:27:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:27:45,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:27:45,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:27:45,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:27:45,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:27:45,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:27:45,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:27:45,057 INFO L87 Difference]: Start difference. First operand 194769 states and 253327 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 02:28:07,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:28:07,255 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:28:07,261 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:28:07,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:28:07 BoogieIcfgContainer [2018-10-24 02:28:07,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:28:07,263 INFO L168 Benchmark]: Toolchain (without parser) took 240449.55 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -290.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 02:28:07,264 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 02:28:07,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3947.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:07,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 783.39 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:07,266 INFO L168 Benchmark]: Boogie Preprocessor took 492.34 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:07,267 INFO L168 Benchmark]: RCFGBuilder took 17969.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 188.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 483.6 MB). Peak memory consumption was 672.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:07,268 INFO L168 Benchmark]: TraceAbstraction took 217252.46 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 792.2 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 37.0 MB). Peak memory consumption was 829.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:28:07,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3947.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 783.39 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 853.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 492.34 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17969.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 188.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 483.6 MB). Peak memory consumption was 672.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217252.46 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 792.2 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 37.0 MB). Peak memory consumption was 829.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (194769states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (342169 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 217.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 204.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7825 SDtfs, 49243 SDslu, 5494 SDs, 0 SdLazy, 78653 SolverSat, 20639 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 172.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194769occurred 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: 8.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 4301 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1920 NumberOfCodeBlocks, 1920 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1912 ConstructedInterpolants, 0 QuantifiedInterpolants, 1306647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 252/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown