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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:55:18,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:55:18,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:55:18,719 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:55:18,719 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:55:18,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:55:18,722 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:55:18,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:55:18,725 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:55:18,726 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:55:18,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:55:18,728 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:55:18,729 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:55:18,730 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:55:18,731 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:55:18,731 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:55:18,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:55:18,734 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:55:18,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:55:18,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:55:18,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:55:18,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:55:18,743 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:55:18,750 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:55:18,750 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:55:18,751 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:55:18,752 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:55:18,753 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:55:18,769 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:55:18,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:55:18,772 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:55:18,773 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:55:18,773 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:55:18,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:55:18,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:55:18,773 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:55:18,774 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:55:18,774 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:55:18,774 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:55:18,774 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:55:18,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:55:18,775 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:55:18,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:55:18,775 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:55:18,777 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:55:18,777 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:55:18,777 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:55:18,778 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:55:18,778 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:55:18,778 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:55:18,778 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:55:18,778 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:55:18,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:55:18,779 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:55:18,779 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:55:18,779 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:55:18,779 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:55:18,780 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:55:18,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:55:18,780 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:55:18,780 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:55:18,780 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:55:18,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:55:18,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:55:18,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:55:18,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:55:18,854 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:55:18,855 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18_true-unreach-call.c [2018-11-07 02:55:18,910 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5301a9da7/c9303ebcb6df4afba60ea90a9f58f261/FLAG257017d89 [2018-11-07 02:55:19,521 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:55:19,522 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label18_true-unreach-call.c [2018-11-07 02:55:19,540 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5301a9da7/c9303ebcb6df4afba60ea90a9f58f261/FLAG257017d89 [2018-11-07 02:55:19,565 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5301a9da7/c9303ebcb6df4afba60ea90a9f58f261 [2018-11-07 02:55:19,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:55:19,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:55:19,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:55:19,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:55:19,589 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:55:19,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:55:19" (1/1) ... [2018-11-07 02:55:19,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2d528d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:19, skipping insertion in model container [2018-11-07 02:55:19,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:55:19" (1/1) ... [2018-11-07 02:55:19,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:55:19,694 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:55:20,344 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:55:20,349 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:55:20,526 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:55:20,545 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:55:20,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20 WrapperNode [2018-11-07 02:55:20,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:55:20,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:55:20,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:55:20,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:55:20,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:55:20,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:55:20,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:55:20,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:55:20,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (1/1) ... [2018-11-07 02:55:20,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:55:20,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:55:20,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:55:20,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:55:20,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (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 [2018-11-07 02:55:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:55:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:55:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:55:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:55:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:55:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:55:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:55:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:55:20,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:55:25,419 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:55:25,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:25 BoogieIcfgContainer [2018-11-07 02:55:25,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:55:25,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:55:25,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:55:25,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:55:25,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:55:19" (1/3) ... [2018-11-07 02:55:25,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b36d516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:25, skipping insertion in model container [2018-11-07 02:55:25,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:55:20" (2/3) ... [2018-11-07 02:55:25,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b36d516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:25, skipping insertion in model container [2018-11-07 02:55:25,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:25" (3/3) ... [2018-11-07 02:55:25,429 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label18_true-unreach-call.c [2018-11-07 02:55:25,440 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:55:25,450 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:55:25,467 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:55:25,506 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:55:25,506 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:55:25,506 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:55:25,507 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:55:25,507 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:55:25,507 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:55:25,507 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:55:25,507 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:55:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:55:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 02:55:25,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:25,548 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] [2018-11-07 02:55:25,550 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:25,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:25,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1436819431, now seen corresponding path program 1 times [2018-11-07 02:55:25,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:25,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:25,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:25,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:25,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:26,029 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:55:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:26,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:26,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:55:26,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:26,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:55:26,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:55:26,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:55:26,142 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 02:55:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:28,661 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 02:55:28,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:55:28,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-07 02:55:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:28,698 INFO L225 Difference]: With dead ends: 782 [2018-11-07 02:55:28,699 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 02:55:28,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:55:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 02:55:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 02:55:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 02:55:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-11-07 02:55:28,803 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 41 [2018-11-07 02:55:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:28,804 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-11-07 02:55:28,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:55:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-11-07 02:55:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 02:55:28,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:28,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:55:28,812 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:28,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1751988327, now seen corresponding path program 1 times [2018-11-07 02:55:28,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:28,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:28,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:28,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:28,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:29,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:29,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:55:29,231 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:29,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:55:29,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:55:29,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:55:29,234 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-11-07 02:55:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:34,472 INFO L93 Difference]: Finished difference Result 1802 states and 3378 transitions. [2018-11-07 02:55:34,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 02:55:34,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 02:55:34,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:34,489 INFO L225 Difference]: With dead ends: 1802 [2018-11-07 02:55:34,490 INFO L226 Difference]: Without dead ends: 1326 [2018-11-07 02:55:34,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 02:55:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2018-11-07 02:55:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1284. [2018-11-07 02:55:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2018-11-07 02:55:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1948 transitions. [2018-11-07 02:55:34,596 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1948 transitions. Word has length 112 [2018-11-07 02:55:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:34,597 INFO L480 AbstractCegarLoop]: Abstraction has 1284 states and 1948 transitions. [2018-11-07 02:55:34,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:55:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1948 transitions. [2018-11-07 02:55:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 02:55:34,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:34,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:55:34,606 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:34,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:34,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1980785435, now seen corresponding path program 1 times [2018-11-07 02:55:34,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:34,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:34,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:34,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:34,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:34,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:55:34,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:55:34,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:34,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:55:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:55:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:55:34,944 INFO L87 Difference]: Start difference. First operand 1284 states and 1948 transitions. Second operand 6 states. [2018-11-07 02:55:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:55:39,887 INFO L93 Difference]: Finished difference Result 4497 states and 7268 transitions. [2018-11-07 02:55:39,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:55:39,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-11-07 02:55:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:55:39,918 INFO L225 Difference]: With dead ends: 4497 [2018-11-07 02:55:39,919 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 02:55:39,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:55:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 02:55:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3180. [2018-11-07 02:55:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2018-11-07 02:55:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 4560 transitions. [2018-11-07 02:55:40,076 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 4560 transitions. Word has length 122 [2018-11-07 02:55:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:55:40,076 INFO L480 AbstractCegarLoop]: Abstraction has 3180 states and 4560 transitions. [2018-11-07 02:55:40,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:55:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 4560 transitions. [2018-11-07 02:55:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-07 02:55:40,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:55:40,086 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:55:40,087 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:55:40,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:40,087 INFO L82 PathProgramCache]: Analyzing trace with hash -171627092, now seen corresponding path program 1 times [2018-11-07 02:55:40,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:55:40,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:40,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:55:40,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:55:40,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:55:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:55:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:55:40,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:55:40,531 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:55:40,532 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-11-07 02:55:40,534 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:55:40,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:55:40,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:55:42,445 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:55:43,073 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:55:43,075 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 02:55:43,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:55:43,121 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:55:45,669 INFO L227 lantSequenceWeakener]: Weakened 178 states. On average, predicates are now at 73.56% of their original sizes. [2018-11-07 02:55:45,670 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:55:46,146 INFO L415 sIntCurrentIteration]: We unified 185 AI predicates to 185 [2018-11-07 02:55:46,147 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:55:46,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:55:46,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 02:55:46,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:46,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 02:55:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 02:55:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:55:46,150 INFO L87 Difference]: Start difference. First operand 3180 states and 4560 transitions. Second operand 7 states. [2018-11-07 02:56:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:56:36,969 INFO L93 Difference]: Finished difference Result 6546 states and 9331 transitions. [2018-11-07 02:56:36,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:56:36,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-11-07 02:56:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:56:36,989 INFO L225 Difference]: With dead ends: 6546 [2018-11-07 02:56:36,990 INFO L226 Difference]: Without dead ends: 3372 [2018-11-07 02:56:37,003 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:56:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2018-11-07 02:56:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3370. [2018-11-07 02:56:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2018-11-07 02:56:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4759 transitions. [2018-11-07 02:56:37,099 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4759 transitions. Word has length 186 [2018-11-07 02:56:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:56:37,099 INFO L480 AbstractCegarLoop]: Abstraction has 3370 states and 4759 transitions. [2018-11-07 02:56:37,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 02:56:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4759 transitions. [2018-11-07 02:56:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 02:56:37,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:56:37,106 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:56:37,107 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:56:37,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:56:37,107 INFO L82 PathProgramCache]: Analyzing trace with hash 525186115, now seen corresponding path program 1 times [2018-11-07 02:56:37,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:56:37,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:37,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:56:37,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:37,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:56:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:56:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 02:56:37,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:56:37,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:56:37,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:56:37,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:56:37,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:56:37,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:56:37,492 INFO L87 Difference]: Start difference. First operand 3370 states and 4759 transitions. Second operand 4 states. [2018-11-07 02:56:40,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:56:40,971 INFO L93 Difference]: Finished difference Result 9798 states and 15315 transitions. [2018-11-07 02:56:40,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:56:40,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2018-11-07 02:56:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:56:41,021 INFO L225 Difference]: With dead ends: 9798 [2018-11-07 02:56:41,022 INFO L226 Difference]: Without dead ends: 6624 [2018-11-07 02:56:41,049 INFO L604 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 [2018-11-07 02:56:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6624 states. [2018-11-07 02:56:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6624 to 6613. [2018-11-07 02:56:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6613 states. [2018-11-07 02:56:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 9766 transitions. [2018-11-07 02:56:41,253 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 9766 transitions. Word has length 239 [2018-11-07 02:56:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:56:41,254 INFO L480 AbstractCegarLoop]: Abstraction has 6613 states and 9766 transitions. [2018-11-07 02:56:41,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:56:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 9766 transitions. [2018-11-07 02:56:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-07 02:56:41,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:56:41,270 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:56:41,270 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:56:41,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:56:41,271 INFO L82 PathProgramCache]: Analyzing trace with hash -704671656, now seen corresponding path program 1 times [2018-11-07 02:56:41,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:56:41,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:41,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:56:41,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:56:41,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:56:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:56:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 02:56:42,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:56:42,202 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:56:42,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-11-07 02:56:42,203 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [629], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:56:42,214 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:56:42,214 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:56:44,391 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:57:22,608 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:57:22,608 INFO L272 AbstractInterpreter]: Visited 135 different actions 666 times. Merged at 7 different actions 35 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 02:57:22,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:22,616 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:57:26,238 INFO L227 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 80.77% of their original sizes. [2018-11-07 02:57:26,238 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:58:23,547 INFO L415 sIntCurrentIteration]: We unified 269 AI predicates to 269 [2018-11-07 02:58:23,547 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:58:23,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:58:23,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-07 02:58:23,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:58:23,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 02:58:23,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 02:58:23,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-07 02:58:23,550 INFO L87 Difference]: Start difference. First operand 6613 states and 9766 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 02:59:14,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 02:59:14,261 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:59:14,268 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:59:14,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:59:14 BoogieIcfgContainer [2018-11-07 02:59:14,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:59:14,269 INFO L168 Benchmark]: Toolchain (without parser) took 234689.30 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -211.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 02:59:14,270 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:59:14,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 964.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:14,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -837.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:14,273 INFO L168 Benchmark]: Boogie Preprocessor took 140.76 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:59:14,273 INFO L168 Benchmark]: RCFGBuilder took 4528.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 177.1 MB). Peak memory consumption was 177.1 MB. Max. memory is 7.1 GB. [2018-11-07 02:59:14,274 INFO L168 Benchmark]: TraceAbstraction took 228846.88 ms. Allocated memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 382.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 02:59:14,281 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 964.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -837.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.76 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4528.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 177.1 MB). Peak memory consumption was 177.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228846.88 ms. Allocated memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 382.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (6613states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (85 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 228.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 117.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 873 SDtfs, 3593 SDslu, 900 SDs, 0 SdLazy, 6792 SolverSat, 1295 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 489 GetRequests, 408 SyntacticMatches, 40 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 60.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6613occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 43.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955597510663594 AbsIntWeakeningRatio, 0.12334801762114538 AbsIntAvgWeakeningVarsNumRemoved, 1000.9118942731277 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 99 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 970 NumberOfCodeBlocks, 970 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 964 ConstructedInterpolants, 0 QuantifiedInterpolants, 563470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 453/526 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown