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/Problem10_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:28:56,677 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:28:56,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:28:56,693 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:28:56,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:28:56,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:28:56,696 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:28:56,697 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:28:56,699 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:28:56,700 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:28:56,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:28:56,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:28:56,702 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:28:56,703 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:28:56,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:28:56,705 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:28:56,706 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:28:56,708 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:28:56,710 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:28:56,712 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:28:56,713 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:28:56,714 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:28:56,717 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:28:56,729 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:28:56,729 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:28:56,731 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:28:56,732 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:28:56,732 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 [2018-10-26 23:28:56,755 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:28:56,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:28:56,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:28:56,758 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:28:56,758 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:28:56,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:28:56,759 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:28:56,759 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:28:56,759 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:28:56,759 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:28:56,759 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:28:56,760 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:28:56,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:28:56,762 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:28:56,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:28:56,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:28:56,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:28:56,763 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:28:56,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:28:56,765 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:28:56,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:28:56,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:28:56,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:28:56,766 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:28:56,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:28:56,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:28:56,766 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:28:56,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:28:56,767 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:28:56,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:28:56,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:28:56,767 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:28:56,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:28:56,768 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:28:56,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:28:56,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:28:56,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:28:56,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:28:56,840 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:28:56,841 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-26 23:28:56,904 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d1665512/a492dab592a14000ac6d1cd314f41ffc/FLAG17628cd04 [2018-10-26 23:28:57,506 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:28:57,512 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-26 23:28:57,535 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d1665512/a492dab592a14000ac6d1cd314f41ffc/FLAG17628cd04 [2018-10-26 23:28:57,560 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d1665512/a492dab592a14000ac6d1cd314f41ffc [2018-10-26 23:28:57,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:28:57,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:28:57,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:28:57,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:28:57,582 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:28:57,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:57" (1/1) ... [2018-10-26 23:28:57,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72305746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:57, skipping insertion in model container [2018-10-26 23:28:57,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:57" (1/1) ... [2018-10-26 23:28:57,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:28:57,674 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:28:58,175 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:28:58,182 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:28:58,319 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:28:58,338 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:28:58,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58 WrapperNode [2018-10-26 23:28:58,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:28:58,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:28:58,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:28:58,340 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:28:58,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:28:58,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:28:58,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:28:58,551 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:28:58,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (1/1) ... [2018-10-26 23:28:58,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:28:58,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:28:58,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:28:58,684 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:28:58,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (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 [2018-10-26 23:28:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:28:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:28:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:28:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:28:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:28:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:28:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:28:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:29:02,727 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:29:02,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:29:02 BoogieIcfgContainer [2018-10-26 23:29:02,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:29:02,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:29:02,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:29:02,737 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:29:02,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:28:57" (1/3) ... [2018-10-26 23:29:02,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e93d729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:29:02, skipping insertion in model container [2018-10-26 23:29:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:58" (2/3) ... [2018-10-26 23:29:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e93d729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:29:02, skipping insertion in model container [2018-10-26 23:29:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:29:02" (3/3) ... [2018-10-26 23:29:02,744 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label28_false-unreach-call.c [2018-10-26 23:29:02,753 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:29:02,761 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:29:02,779 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:29:02,819 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:29:02,819 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:29:02,819 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:29:02,819 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:29:02,820 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:29:02,820 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:29:02,820 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:29:02,820 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:29:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-26 23:29:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 23:29:02,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:02,857 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:29:02,860 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:02,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:02,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1764811988, now seen corresponding path program 1 times [2018-10-26 23:29:02,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:02,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:02,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:02,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:02,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:03,265 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:29:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:03,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:29:03,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:29:03,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:03,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:29:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:29:03,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:29:03,405 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-26 23:29:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:05,575 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-26 23:29:05,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:29:05,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-26 23:29:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:05,600 INFO L225 Difference]: With dead ends: 574 [2018-10-26 23:29:05,600 INFO L226 Difference]: Without dead ends: 356 [2018-10-26 23:29:05,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:29:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-26 23:29:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-26 23:29:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-26 23:29:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-26 23:29:05,686 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 18 [2018-10-26 23:29:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:05,687 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-26 23:29:05,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:29:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-26 23:29:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 23:29:05,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:05,694 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:29:05,694 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:05,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:05,695 INFO L82 PathProgramCache]: Analyzing trace with hash 498515883, now seen corresponding path program 1 times [2018-10-26 23:29:05,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:05,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:05,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:05,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:05,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:06,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:29:06,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:29:06,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:06,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:29:06,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:29:06,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:29:06,097 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-26 23:29:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:09,156 INFO L93 Difference]: Finished difference Result 1290 states and 2315 transitions. [2018-10-26 23:29:09,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:29:09,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-10-26 23:29:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:09,167 INFO L225 Difference]: With dead ends: 1290 [2018-10-26 23:29:09,167 INFO L226 Difference]: Without dead ends: 940 [2018-10-26 23:29:09,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:29:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2018-10-26 23:29:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 925. [2018-10-26 23:29:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2018-10-26 23:29:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1443 transitions. [2018-10-26 23:29:09,248 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1443 transitions. Word has length 101 [2018-10-26 23:29:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:09,249 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1443 transitions. [2018-10-26 23:29:09,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:29:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1443 transitions. [2018-10-26 23:29:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-26 23:29:09,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:09,260 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:29:09,260 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:09,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:09,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1789374603, now seen corresponding path program 1 times [2018-10-26 23:29:09,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:09,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:09,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:09,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:09,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:09,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:29:09,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:29:09,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:09,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:29:09,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:29:09,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:29:09,543 INFO L87 Difference]: Start difference. First operand 925 states and 1443 transitions. Second operand 6 states. [2018-10-26 23:29:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:13,582 INFO L93 Difference]: Finished difference Result 2535 states and 4089 transitions. [2018-10-26 23:29:13,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:29:13,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-26 23:29:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:13,601 INFO L225 Difference]: With dead ends: 2535 [2018-10-26 23:29:13,601 INFO L226 Difference]: Without dead ends: 1616 [2018-10-26 23:29:13,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:29:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2018-10-26 23:29:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1585. [2018-10-26 23:29:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2018-10-26 23:29:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2320 transitions. [2018-10-26 23:29:13,689 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2320 transitions. Word has length 117 [2018-10-26 23:29:13,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:13,690 INFO L481 AbstractCegarLoop]: Abstraction has 1585 states and 2320 transitions. [2018-10-26 23:29:13,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:29:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2320 transitions. [2018-10-26 23:29:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 23:29:13,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:13,702 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:29:13,702 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:13,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:13,703 INFO L82 PathProgramCache]: Analyzing trace with hash 674683355, now seen corresponding path program 1 times [2018-10-26 23:29:13,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:13,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:13,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:13,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:13,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:13,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:29:13,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:29:13,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:13,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:29:13,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:29:13,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:29:13,973 INFO L87 Difference]: Start difference. First operand 1585 states and 2320 transitions. Second operand 6 states. [2018-10-26 23:29:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:15,257 INFO L93 Difference]: Finished difference Result 3506 states and 5314 transitions. [2018-10-26 23:29:15,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:29:15,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-26 23:29:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:15,281 INFO L225 Difference]: With dead ends: 3506 [2018-10-26 23:29:15,281 INFO L226 Difference]: Without dead ends: 1927 [2018-10-26 23:29:15,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:29:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2018-10-26 23:29:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1888. [2018-10-26 23:29:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2018-10-26 23:29:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2674 transitions. [2018-10-26 23:29:15,370 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2674 transitions. Word has length 141 [2018-10-26 23:29:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:15,370 INFO L481 AbstractCegarLoop]: Abstraction has 1888 states and 2674 transitions. [2018-10-26 23:29:15,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:29:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2674 transitions. [2018-10-26 23:29:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-26 23:29:15,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:15,378 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:29:15,378 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:15,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash 307682743, now seen corresponding path program 1 times [2018-10-26 23:29:15,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:15,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:15,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:15,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:15,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:15,823 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 23:29:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:16,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:29:16,194 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:29:16,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-26 23:29:16,197 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [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], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:29:16,269 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:29:16,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:29:19,042 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:29:31,388 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:29:31,389 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:29:31,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:31,405 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:29:34,781 INFO L227 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 76.53% of their original sizes. [2018-10-26 23:29:34,784 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:30:01,418 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-10-26 23:30:01,418 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:30:01,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:30:01,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-26 23:30:01,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:30:01,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 23:30:01,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 23:30:01,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-10-26 23:30:01,421 INFO L87 Difference]: Start difference. First operand 1888 states and 2674 transitions. Second operand 19 states. [2018-10-26 23:32:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:32:36,482 INFO L93 Difference]: Finished difference Result 4763 states and 6872 transitions. [2018-10-26 23:32:36,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 23:32:36,482 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2018-10-26 23:32:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:32:36,498 INFO L225 Difference]: With dead ends: 4763 [2018-10-26 23:32:36,498 INFO L226 Difference]: Without dead ends: 2881 [2018-10-26 23:32:36,508 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 136 SyntacticMatches, 27 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2018-10-26 23:32:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2018-10-26 23:32:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2670. [2018-10-26 23:32:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2018-10-26 23:32:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3538 transitions. [2018-10-26 23:32:36,656 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3538 transitions. Word has length 181 [2018-10-26 23:32:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:32:36,657 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 3538 transitions. [2018-10-26 23:32:36,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-26 23:32:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3538 transitions. [2018-10-26 23:32:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-26 23:32:36,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:32:36,663 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:32:36,664 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:32:36,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1321868351, now seen corresponding path program 1 times [2018-10-26 23:32:36,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:32:36,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:36,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:32:36,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:32:36,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:32:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:32:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:32:36,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:32:36,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:32:36,941 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-26 23:32:36,941 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [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], [546], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:32:36,948 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:32:36,948 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:32:39,562 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:32:47,855 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:32:47,855 INFO L272 AbstractInterpreter]: Visited 124 different actions 359 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:32:47,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:32:47,863 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:32:50,917 INFO L227 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 73.33% of their original sizes. [2018-10-26 23:32:50,917 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-26 23:32:55,495 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:32:55,501 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:32:55,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:32:55 BoogieIcfgContainer [2018-10-26 23:32:55,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:32:55,502 INFO L168 Benchmark]: Toolchain (without parser) took 237927.31 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 23:32:55,504 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. [2018-10-26 23:32:55,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:55,505 INFO L168 Benchmark]: Boogie Procedure Inliner took 210.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:55,506 INFO L168 Benchmark]: Boogie Preprocessor took 132.17 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. [2018-10-26 23:32:55,507 INFO L168 Benchmark]: RCFGBuilder took 4045.21 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: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:55,507 INFO L168 Benchmark]: TraceAbstraction took 232771.92 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -644.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 23:32:55,513 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 761.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 210.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.17 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 4045.21 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: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232771.92 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -644.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 218 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 232.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 165.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 548 SDtfs, 4892 SDslu, 610 SDs, 0 SdLazy, 5248 SolverSat, 1137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 220 GetRequests, 145 SyntacticMatches, 31 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2670occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9940436978480456 AbsIntWeakeningRatio, 0.13131313131313133 AbsIntAvgWeakeningVarsNumRemoved, 168.96464646464648 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 296 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 691282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 133/135 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown