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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:25:00,768 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:25:00,771 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:25:00,789 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:25:00,790 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:25:00,791 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:25:00,792 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:25:00,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:25:00,797 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:25:00,799 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:25:00,801 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:25:00,802 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:25:00,802 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:25:00,804 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:25:00,805 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:25:00,808 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:25:00,809 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:25:00,812 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:25:00,821 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:25:00,822 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:25:00,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:25:00,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:25:00,830 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 06:25:00,840 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:25:00,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:25:00,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:25:00,868 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:25:00,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:25:00,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:25:00,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:25:00,869 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:25:00,869 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:25:00,870 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:25:00,871 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:25:00,871 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:25:00,871 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:25:00,871 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:25:00,871 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:25:00,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:25:00,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:25:00,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:25:00,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:25:00,874 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:25:00,874 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:25:00,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:25:00,875 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:25:00,875 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:25:00,875 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:25:00,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:25:00,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:25:00,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:25:00,876 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:25:00,876 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:25:00,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:25:00,877 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:25:00,877 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:25:00,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:25:00,877 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:25:00,877 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:25:00,878 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:25:00,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:25:00,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:25:00,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:25:00,958 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:25:00,958 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:25:00,959 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-11-07 06:25:01,027 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a91dbe62/a70377f9c95a48d9990ca67fc28b131c/FLAG9e8145dd4 [2018-11-07 06:25:01,629 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:25:01,630 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label39_false-unreach-call_false-termination.c [2018-11-07 06:25:01,647 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a91dbe62/a70377f9c95a48d9990ca67fc28b131c/FLAG9e8145dd4 [2018-11-07 06:25:01,670 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a91dbe62/a70377f9c95a48d9990ca67fc28b131c [2018-11-07 06:25:01,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:25:01,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:25:01,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:25:01,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:25:01,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:25:01,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:25:01" (1/1) ... [2018-11-07 06:25:01,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a4c63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:01, skipping insertion in model container [2018-11-07 06:25:01,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:25:01" (1/1) ... [2018-11-07 06:25:01,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:25:01,803 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:25:02,450 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:25:02,456 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:25:02,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:25:02,676 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:25:02,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02 WrapperNode [2018-11-07 06:25:02,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:25:02,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:25:02,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:25:02,680 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:25:02,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:25:02,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:25:02,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:25:02,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:25:02,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (1/1) ... [2018-11-07 06:25:02,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:25:02,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:25:02,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:25:02,958 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:25:02,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (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 06:25:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:25:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:25:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:25:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:25:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:25:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:25:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:25:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:25:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:25:06,409 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:25:06,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:25:06 BoogieIcfgContainer [2018-11-07 06:25:06,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:25:06,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:25:06,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:25:06,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:25:06,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:25:01" (1/3) ... [2018-11-07 06:25:06,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9fad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:25:06, skipping insertion in model container [2018-11-07 06:25:06,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:25:02" (2/3) ... [2018-11-07 06:25:06,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9fad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:25:06, skipping insertion in model container [2018-11-07 06:25:06,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:25:06" (3/3) ... [2018-11-07 06:25:06,420 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label39_false-unreach-call_false-termination.c [2018-11-07 06:25:06,431 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:25:06,440 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:25:06,457 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:25:06,493 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:25:06,493 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:25:06,494 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:25:06,494 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:25:06,494 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:25:06,494 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:25:06,494 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:25:06,495 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:25:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:25:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 06:25:06,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:06,531 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] [2018-11-07 06:25:06,533 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:06,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:06,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1823937900, now seen corresponding path program 1 times [2018-11-07 06:25:06,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:06,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:06,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:06,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:06,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:06,947 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:25:07,056 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 06:25:07,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:25:07,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:25:07,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:07,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:25:07,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:25:07,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:25:07,086 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:25:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:09,104 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:25:09,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:25:09,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 06:25:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:09,128 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:25:09,128 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:25:09,136 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 06:25:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:25:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:25:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:25:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 06:25:09,221 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 32 [2018-11-07 06:25:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:09,222 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 06:25:09,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:25:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 06:25:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 06:25:09,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:09,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:09,229 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:09,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:09,230 INFO L82 PathProgramCache]: Analyzing trace with hash -319610313, now seen corresponding path program 1 times [2018-11-07 06:25:09,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:09,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:09,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:09,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:09,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:25:09,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:25:09,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:25:09,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:09,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:25:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:25:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:25:09,630 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 06:25:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:11,659 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 06:25:11,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:25:11,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-11-07 06:25:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:11,668 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 06:25:11,668 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 06:25:11,671 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:25:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 06:25:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 06:25:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 06:25:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 06:25:11,714 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 119 [2018-11-07 06:25:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:11,715 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 06:25:11,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:25:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 06:25:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 06:25:11,720 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:11,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:11,721 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:11,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:11,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1728515332, now seen corresponding path program 1 times [2018-11-07 06:25:11,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:11,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:11,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:11,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:11,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:25:12,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:12,201 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:12,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-11-07 06:25:12,204 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], [157], [159], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:12,264 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:12,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:12,742 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:12,744 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:25:12,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:12,795 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:13,237 INFO L227 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-07 06:25:13,237 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:13,465 INFO L415 sIntCurrentIteration]: We unified 127 AI predicates to 127 [2018-11-07 06:25:13,466 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:13,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:13,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 06:25:13,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:13,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:25:13,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:25:13,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:25:13,470 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 6 states. [2018-11-07 06:25:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:43,639 INFO L93 Difference]: Finished difference Result 1429 states and 2328 transitions. [2018-11-07 06:25:43,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:25:43,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 06:25:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:43,644 INFO L225 Difference]: With dead ends: 1429 [2018-11-07 06:25:43,644 INFO L226 Difference]: Without dead ends: 810 [2018-11-07 06:25:43,647 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:25:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-11-07 06:25:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2018-11-07 06:25:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2018-11-07 06:25:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1209 transitions. [2018-11-07 06:25:43,673 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1209 transitions. Word has length 128 [2018-11-07 06:25:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:43,674 INFO L480 AbstractCegarLoop]: Abstraction has 808 states and 1209 transitions. [2018-11-07 06:25:43,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:25:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1209 transitions. [2018-11-07 06:25:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 06:25:43,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:43,678 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:25:43,679 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:43,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:43,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1027226283, now seen corresponding path program 1 times [2018-11-07 06:25:43,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:43,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:43,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:43,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:43,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:25:44,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:44,482 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:44,483 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-11-07 06:25:44,483 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], [157], [159], [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], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:44,488 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:44,489 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:44,600 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:25:44,600 INFO L272 AbstractInterpreter]: Visited 105 different actions 202 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:25:44,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:44,640 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:25:44,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:44,641 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:25:44,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:44,659 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:25:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:44,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:25:45,191 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:25:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 82 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:25:45,682 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:25:46,451 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 06:25:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:25:46,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:25:46,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-11-07 06:25:46,833 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:25:46,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 06:25:46,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 06:25:46,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:25:46,837 INFO L87 Difference]: Start difference. First operand 808 states and 1209 transitions. Second operand 15 states. [2018-11-07 06:25:50,759 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-11-07 06:25:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:53,464 INFO L93 Difference]: Finished difference Result 2255 states and 3549 transitions. [2018-11-07 06:25:53,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 06:25:53,466 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-11-07 06:25:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:53,477 INFO L225 Difference]: With dead ends: 2255 [2018-11-07 06:25:53,477 INFO L226 Difference]: Without dead ends: 1437 [2018-11-07 06:25:53,484 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 06:25:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2018-11-07 06:25:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1206. [2018-11-07 06:25:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2018-11-07 06:25:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1603 transitions. [2018-11-07 06:25:53,537 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1603 transitions. Word has length 213 [2018-11-07 06:25:53,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:53,538 INFO L480 AbstractCegarLoop]: Abstraction has 1206 states and 1603 transitions. [2018-11-07 06:25:53,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 06:25:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1603 transitions. [2018-11-07 06:25:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 06:25:53,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:53,542 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:25:53,543 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:53,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:53,543 INFO L82 PathProgramCache]: Analyzing trace with hash -229492457, now seen corresponding path program 1 times [2018-11-07 06:25:53,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:53,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:53,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:53,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:53,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:54,041 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:25:54,228 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:25:54,480 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:25:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:25:55,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:55,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:55,500 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 06:25:55,500 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], [157], [159], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:55,506 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:55,507 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:55,692 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:55,693 INFO L272 AbstractInterpreter]: Visited 119 different actions 232 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:25:55,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:55,730 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:56,033 INFO L227 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-07 06:25:56,033 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:56,786 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 06:25:56,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:56,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:56,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2018-11-07 06:25:56,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:56,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:25:56,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:25:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:25:56,788 INFO L87 Difference]: Start difference. First operand 1206 states and 1603 transitions. Second operand 10 states. [2018-11-07 06:26:20,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:20,987 INFO L93 Difference]: Finished difference Result 2216 states and 3011 transitions. [2018-11-07 06:26:20,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:26:20,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 239 [2018-11-07 06:26:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:20,994 INFO L225 Difference]: With dead ends: 2216 [2018-11-07 06:26:20,994 INFO L226 Difference]: Without dead ends: 1199 [2018-11-07 06:26:20,997 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 246 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:26:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2018-11-07 06:26:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1194. [2018-11-07 06:26:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2018-11-07 06:26:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1569 transitions. [2018-11-07 06:26:21,029 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1569 transitions. Word has length 239 [2018-11-07 06:26:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:21,030 INFO L480 AbstractCegarLoop]: Abstraction has 1194 states and 1569 transitions. [2018-11-07 06:26:21,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:26:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1569 transitions. [2018-11-07 06:26:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-11-07 06:26:21,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:21,037 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:21,037 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:21,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash 613999339, now seen corresponding path program 1 times [2018-11-07 06:26:21,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:21,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:21,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:21,372 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 06:26:21,614 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 06:26:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 183 proven. 125 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 06:26:22,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:22,022 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:22,023 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 350 with the following transitions: [2018-11-07 06:26:22,023 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], [157], [159], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:22,026 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:22,027 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:26,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:26:26,747 INFO L272 AbstractInterpreter]: Visited 120 different actions 359 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:26:26,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:26,757 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:26:27,625 INFO L227 lantSequenceWeakener]: Weakened 346 states. On average, predicates are now at 80.23% of their original sizes. [2018-11-07 06:26:27,626 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:26:27,710 INFO L415 sIntCurrentIteration]: We unified 348 AI predicates to 348 [2018-11-07 06:26:27,710 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:26:27,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:26:27,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2018-11-07 06:26:27,711 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:27,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:26:27,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:26:27,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:26:27,713 INFO L87 Difference]: Start difference. First operand 1194 states and 1569 transitions. Second operand 9 states. [2018-11-07 06:26:45,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:45,909 INFO L93 Difference]: Finished difference Result 2362 states and 3293 transitions. [2018-11-07 06:26:45,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:26:45,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2018-11-07 06:26:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:45,917 INFO L225 Difference]: With dead ends: 2362 [2018-11-07 06:26:45,917 INFO L226 Difference]: Without dead ends: 1542 [2018-11-07 06:26:45,922 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 355 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:26:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2018-11-07 06:26:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1520. [2018-11-07 06:26:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1520 states. [2018-11-07 06:26:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1980 transitions. [2018-11-07 06:26:46,019 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1980 transitions. Word has length 349 [2018-11-07 06:26:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:46,019 INFO L480 AbstractCegarLoop]: Abstraction has 1520 states and 1980 transitions. [2018-11-07 06:26:46,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:26:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1980 transitions. [2018-11-07 06:26:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-11-07 06:26:46,028 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:46,029 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:26:46,029 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:46,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:46,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1303154289, now seen corresponding path program 1 times [2018-11-07 06:26:46,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:46,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:46,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:46,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:46,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 69 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-11-07 06:26:46,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:46,850 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:46,850 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 420 with the following transitions: [2018-11-07 06:26:46,850 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], [157], [159], [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], [494], [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], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:46,861 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:46,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:52,049 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:52,049 INFO L272 AbstractInterpreter]: Visited 122 different actions 484 times. Merged at 9 different actions 32 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:52,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:52,059 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:52,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:52,059 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:52,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:52,069 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:52,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 477 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-11-07 06:26:52,596 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 69 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-11-07 06:26:52,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:52,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 06:26:52,805 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:52,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:26:52,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:26:52,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 06:26:52,807 INFO L87 Difference]: Start difference. First operand 1520 states and 1980 transitions. Second operand 10 states. [2018-11-07 06:26:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:57,419 INFO L93 Difference]: Finished difference Result 5677 states and 8406 transitions. [2018-11-07 06:26:57,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 06:26:57,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 419 [2018-11-07 06:26:57,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:57,447 INFO L225 Difference]: With dead ends: 5677 [2018-11-07 06:26:57,448 INFO L226 Difference]: Without dead ends: 4531 [2018-11-07 06:26:57,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 850 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-07 06:26:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2018-11-07 06:26:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 4487. [2018-11-07 06:26:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4487 states. [2018-11-07 06:26:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 5874 transitions. [2018-11-07 06:26:57,589 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 5874 transitions. Word has length 419 [2018-11-07 06:26:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:57,590 INFO L480 AbstractCegarLoop]: Abstraction has 4487 states and 5874 transitions. [2018-11-07 06:26:57,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:26:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 5874 transitions. [2018-11-07 06:26:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-11-07 06:26:57,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:57,600 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:26:57,600 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:57,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2118459876, now seen corresponding path program 1 times [2018-11-07 06:26:57,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:57,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:57,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:57,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:57,602 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 401 proven. 173 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 06:26:58,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:58,659 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:58,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-11-07 06:26:58,659 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], [157], [159], [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], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:58,663 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:58,663 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:06,586 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:06,587 INFO L272 AbstractInterpreter]: Visited 122 different actions 490 times. Merged at 9 different actions 36 times. Never widened. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:27:06,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:06,600 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:06,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:06,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:06,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:06,609 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:06,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-07 06:27:06,965 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-07 06:27:07,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:07,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 14 [2018-11-07 06:27:07,454 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:07,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 06:27:07,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 06:27:07,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:27:07,457 INFO L87 Difference]: Start difference. First operand 4487 states and 5874 transitions. Second operand 13 states. [2018-11-07 06:27:10,338 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-11-07 06:27:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:11,333 INFO L93 Difference]: Finished difference Result 9141 states and 12543 transitions. [2018-11-07 06:27:11,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 06:27:11,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 434 [2018-11-07 06:27:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:11,366 INFO L225 Difference]: With dead ends: 9141 [2018-11-07 06:27:11,366 INFO L226 Difference]: Without dead ends: 4829 [2018-11-07 06:27:11,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 873 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2018-11-07 06:27:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2018-11-07 06:27:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4615. [2018-11-07 06:27:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4615 states. [2018-11-07 06:27:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4615 states to 4615 states and 5831 transitions. [2018-11-07 06:27:11,552 INFO L78 Accepts]: Start accepts. Automaton has 4615 states and 5831 transitions. Word has length 434 [2018-11-07 06:27:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:11,553 INFO L480 AbstractCegarLoop]: Abstraction has 4615 states and 5831 transitions. [2018-11-07 06:27:11,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 06:27:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4615 states and 5831 transitions. [2018-11-07 06:27:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-11-07 06:27:11,561 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:11,561 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 06:27:11,562 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:11,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:11,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1044484796, now seen corresponding path program 1 times [2018-11-07 06:27:11,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:11,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:11,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:11,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:11,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 427 proven. 184 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-07 06:27:12,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:12,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:12,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-11-07 06:27:12,754 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], [157], [159], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [746], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:12,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:12,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:17,897 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:17,897 INFO L272 AbstractInterpreter]: Visited 144 different actions 573 times. Merged at 9 different actions 33 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:27:17,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:17,907 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:17,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:17,907 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:17,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:17,916 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:18,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:27:18,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:27:19,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:19,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:27:19,075 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:19,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:27:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:27:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:27:19,076 INFO L87 Difference]: Start difference. First operand 4615 states and 5831 transitions. Second operand 17 states. [2018-11-07 06:27:26,820 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2018-11-07 06:27:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:27,243 INFO L93 Difference]: Finished difference Result 9697 states and 13022 transitions. [2018-11-07 06:27:27,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-07 06:27:27,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 482 [2018-11-07 06:27:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:27,272 INFO L225 Difference]: With dead ends: 9697 [2018-11-07 06:27:27,272 INFO L226 Difference]: Without dead ends: 4832 [2018-11-07 06:27:27,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 982 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=824, Invalid=3082, Unknown=0, NotChecked=0, Total=3906 [2018-11-07 06:27:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2018-11-07 06:27:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4441. [2018-11-07 06:27:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4441 states. [2018-11-07 06:27:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 5227 transitions. [2018-11-07 06:27:27,447 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 5227 transitions. Word has length 482 [2018-11-07 06:27:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:27,448 INFO L480 AbstractCegarLoop]: Abstraction has 4441 states and 5227 transitions. [2018-11-07 06:27:27,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:27:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 5227 transitions. [2018-11-07 06:27:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-11-07 06:27:27,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:27,459 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-07 06:27:27,460 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:27,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:27,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1809364163, now seen corresponding path program 1 times [2018-11-07 06:27:27,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:27,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:27,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:27,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 476 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-11-07 06:27:28,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:28,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:28,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 632 with the following transitions: [2018-11-07 06:27:28,192 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], [157], [159], [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], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:28,196 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:28,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:33,992 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:33,993 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:27:34,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:34,013 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:34,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:34,013 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:34,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:34,025 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:34,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 783 proven. 2 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-11-07 06:27:34,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 476 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-11-07 06:27:35,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:35,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 06:27:35,409 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:35,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 06:27:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 06:27:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:27:35,411 INFO L87 Difference]: Start difference. First operand 4441 states and 5227 transitions. Second operand 7 states. [2018-11-07 06:27:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:38,306 INFO L93 Difference]: Finished difference Result 13755 states and 19169 transitions. [2018-11-07 06:27:38,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 06:27:38,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 631 [2018-11-07 06:27:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:38,403 INFO L225 Difference]: With dead ends: 13755 [2018-11-07 06:27:38,404 INFO L226 Difference]: Without dead ends: 9688 [2018-11-07 06:27:38,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1263 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:27:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9688 states. [2018-11-07 06:27:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9688 to 9315. [2018-11-07 06:27:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9315 states. [2018-11-07 06:27:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9315 states to 9315 states and 10992 transitions. [2018-11-07 06:27:38,816 INFO L78 Accepts]: Start accepts. Automaton has 9315 states and 10992 transitions. Word has length 631 [2018-11-07 06:27:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:38,817 INFO L480 AbstractCegarLoop]: Abstraction has 9315 states and 10992 transitions. [2018-11-07 06:27:38,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 06:27:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 9315 states and 10992 transitions. [2018-11-07 06:27:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-11-07 06:27:38,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:38,831 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:38,831 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:38,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash 991294332, now seen corresponding path program 1 times [2018-11-07 06:27:38,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:38,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:38,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:38,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:38,833 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 483 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-11-07 06:27:39,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:39,719 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:39,720 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 639 with the following transitions: [2018-11-07 06:27:39,720 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], [157], [159], [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], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:39,723 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:39,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:44,968 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:44,968 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:27:44,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:44,974 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:44,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:44,974 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:44,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:44,983 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:45,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 790 proven. 2 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-11-07 06:27:45,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 483 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-11-07 06:27:45,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:45,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 06:27:45,957 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:45,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 06:27:45,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 06:27:45,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:27:45,959 INFO L87 Difference]: Start difference. First operand 9315 states and 10992 transitions. Second operand 7 states. [2018-11-07 06:27:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:48,832 INFO L93 Difference]: Finished difference Result 23212 states and 32804 transitions. [2018-11-07 06:27:48,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 06:27:48,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 638 [2018-11-07 06:27:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:49,001 INFO L225 Difference]: With dead ends: 23212 [2018-11-07 06:27:49,001 INFO L226 Difference]: Without dead ends: 14271 [2018-11-07 06:27:49,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1291 GetRequests, 1278 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:27:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14271 states. [2018-11-07 06:27:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 13816. [2018-11-07 06:27:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13816 states. [2018-11-07 06:27:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13816 states to 13816 states and 16604 transitions. [2018-11-07 06:27:49,718 INFO L78 Accepts]: Start accepts. Automaton has 13816 states and 16604 transitions. Word has length 638 [2018-11-07 06:27:49,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:49,719 INFO L480 AbstractCegarLoop]: Abstraction has 13816 states and 16604 transitions. [2018-11-07 06:27:49,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 06:27:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13816 states and 16604 transitions. [2018-11-07 06:27:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2018-11-07 06:27:49,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:49,737 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 06:27:49,737 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:49,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1544380565, now seen corresponding path program 1 times [2018-11-07 06:27:49,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:49,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:49,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:49,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:49,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:50,787 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:27:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 214 proven. 341 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2018-11-07 06:27:51,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:51,635 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:51,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 684 with the following transitions: [2018-11-07 06:27:51,636 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], [157], [159], [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], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:51,639 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:51,639 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:56,992 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:56,993 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:27:57,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:57,002 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:57,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:57,002 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:57,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:57,013 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:57,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1051 trivial. 0 not checked. [2018-11-07 06:27:57,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1051 trivial. 0 not checked. [2018-11-07 06:27:58,035 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:27:58,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2018-11-07 06:27:58,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:58,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:27:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:27:58,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-07 06:27:58,037 INFO L87 Difference]: Start difference. First operand 13816 states and 16604 transitions. Second operand 3 states. [2018-11-07 06:27:59,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:59,142 INFO L93 Difference]: Finished difference Result 30217 states and 37230 transitions. [2018-11-07 06:27:59,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:27:59,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 683 [2018-11-07 06:27:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:59,230 INFO L225 Difference]: With dead ends: 30217 [2018-11-07 06:27:59,230 INFO L226 Difference]: Without dead ends: 16590 [2018-11-07 06:27:59,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1367 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-07 06:27:59,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16590 states. [2018-11-07 06:27:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16590 to 16552. [2018-11-07 06:27:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16552 states. [2018-11-07 06:27:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16552 states to 16552 states and 20006 transitions. [2018-11-07 06:27:59,890 INFO L78 Accepts]: Start accepts. Automaton has 16552 states and 20006 transitions. Word has length 683 [2018-11-07 06:27:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:59,891 INFO L480 AbstractCegarLoop]: Abstraction has 16552 states and 20006 transitions. [2018-11-07 06:27:59,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:27:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 16552 states and 20006 transitions. [2018-11-07 06:27:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2018-11-07 06:27:59,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:59,909 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:59,910 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:59,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1662592103, now seen corresponding path program 1 times [2018-11-07 06:27:59,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:59,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:59,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:59,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:59,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 713 proven. 366 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-11-07 06:28:01,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:01,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:28:01,923 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 808 with the following transitions: [2018-11-07 06:28:01,923 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], [157], [159], [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], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:28:01,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:28:01,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:28:07,563 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:28:07,563 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:28:07,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:07,565 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:28:07,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:07,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:28:07,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:07,575 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:28:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:07,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:28:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 1110 proven. 2 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2018-11-07 06:28:08,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:28:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 676 proven. 95 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2018-11-07 06:28:08,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:28:08,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:28:08,953 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:28:08,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:28:08,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:28:08,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:28:08,955 INFO L87 Difference]: Start difference. First operand 16552 states and 20006 transitions. Second operand 17 states. [2018-11-07 06:28:11,650 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-11-07 06:28:12,676 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2018-11-07 06:28:13,904 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2018-11-07 06:28:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:28:20,968 INFO L93 Difference]: Finished difference Result 36287 states and 48145 transitions. [2018-11-07 06:28:20,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-07 06:28:20,968 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 807 [2018-11-07 06:28:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:28:21,141 INFO L225 Difference]: With dead ends: 36287 [2018-11-07 06:28:21,142 INFO L226 Difference]: Without dead ends: 20109 [2018-11-07 06:28:21,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1728 GetRequests, 1654 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1060, Invalid=4342, Unknown=0, NotChecked=0, Total=5402 [2018-11-07 06:28:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20109 states. [2018-11-07 06:28:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20109 to 18955. [2018-11-07 06:28:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18955 states. [2018-11-07 06:28:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18955 states to 18955 states and 21198 transitions. [2018-11-07 06:28:21,853 INFO L78 Accepts]: Start accepts. Automaton has 18955 states and 21198 transitions. Word has length 807 [2018-11-07 06:28:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:28:21,853 INFO L480 AbstractCegarLoop]: Abstraction has 18955 states and 21198 transitions. [2018-11-07 06:28:21,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:28:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18955 states and 21198 transitions. [2018-11-07 06:28:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2018-11-07 06:28:21,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:28:21,875 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:28:21,875 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:28:21,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:21,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2109321624, now seen corresponding path program 1 times [2018-11-07 06:28:21,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:28:21,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:21,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:21,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:21,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:28:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 562 proven. 1124 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-11-07 06:28:24,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:24,979 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:28:24,979 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 909 with the following transitions: [2018-11-07 06:28:24,979 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], [157], [159], [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], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:28:24,982 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:28:24,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:28:30,614 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:28:30,614 INFO L272 AbstractInterpreter]: Visited 194 different actions 779 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-07 06:28:30,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:30,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:28:30,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:30,621 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:28:30,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:30,632 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:28:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:30,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:28:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 1673 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2018-11-07 06:28:31,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:28:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 563 proven. 350 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2018-11-07 06:28:32,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:28:32,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-07 06:28:32,237 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:28:32,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 06:28:32,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 06:28:32,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:28:32,240 INFO L87 Difference]: Start difference. First operand 18955 states and 21198 transitions. Second operand 18 states. [2018-11-07 06:28:37,800 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-11-07 06:28:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:28:40,795 INFO L93 Difference]: Finished difference Result 36653 states and 41123 transitions. [2018-11-07 06:28:40,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-07 06:28:40,796 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 908 [2018-11-07 06:28:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:28:40,845 INFO L225 Difference]: With dead ends: 36653 [2018-11-07 06:28:40,845 INFO L226 Difference]: Without dead ends: 18072 [2018-11-07 06:28:40,904 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1906 GetRequests, 1843 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=850, Invalid=3310, Unknown=0, NotChecked=0, Total=4160 [2018-11-07 06:28:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18072 states. [2018-11-07 06:28:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18072 to 17616. [2018-11-07 06:28:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17616 states. [2018-11-07 06:28:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17616 states to 17616 states and 19153 transitions. [2018-11-07 06:28:41,270 INFO L78 Accepts]: Start accepts. Automaton has 17616 states and 19153 transitions. Word has length 908 [2018-11-07 06:28:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:28:41,271 INFO L480 AbstractCegarLoop]: Abstraction has 17616 states and 19153 transitions. [2018-11-07 06:28:41,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 06:28:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 17616 states and 19153 transitions. [2018-11-07 06:28:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2018-11-07 06:28:41,290 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:28:41,290 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:28:41,291 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:28:41,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 701722439, now seen corresponding path program 1 times [2018-11-07 06:28:41,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:28:41,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:41,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:41,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:41,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:28:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1312 proven. 97 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2018-11-07 06:28:42,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:42,496 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:28:42,496 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 954 with the following transitions: [2018-11-07 06:28:42,496 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], [157], [159], [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], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:28:42,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:28:42,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:28:48,056 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:28:48,057 INFO L272 AbstractInterpreter]: Visited 194 different actions 779 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-07 06:28:48,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:48,066 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:28:48,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:48,066 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:28:48,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:48,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:28:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:48,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:28:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1312 proven. 6 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2018-11-07 06:28:49,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:28:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2424 backedges. 1312 proven. 101 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2018-11-07 06:28:49,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:28:49,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2018-11-07 06:28:49,994 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:28:49,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:28:49,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:28:49,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:28:49,995 INFO L87 Difference]: Start difference. First operand 17616 states and 19153 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 06:28:50,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:28:50,516 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:28:50,529 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:28:50,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:28:50 BoogieIcfgContainer [2018-11-07 06:28:50,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:28:50,531 INFO L168 Benchmark]: Toolchain (without parser) took 228847.06 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 1.8 GB in the end (delta: -396.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 06:28:50,532 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:28:50,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 989.77 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 06:28:50,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.72 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:28:50,534 INFO L168 Benchmark]: Boogie Preprocessor took 117.81 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 06:28:50,535 INFO L168 Benchmark]: RCFGBuilder took 3451.93 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: 146.9 MB). Peak memory consumption was 146.9 MB. Max. memory is 7.1 GB. [2018-11-07 06:28:50,535 INFO L168 Benchmark]: TraceAbstraction took 224119.19 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 1.8 GB in the end (delta: 218.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 06:28:50,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 989.77 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 159.72 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.81 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 3451.93 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: 146.9 MB). Peak memory consumption was 146.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224119.19 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 1.8 GB in the end (delta: 218.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 79). Cancelled while BasicCegarLoop was constructing difference of abstraction (17616states) and FLOYD_HOARE automaton (currently 6 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (48 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.0s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 129.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2007 SDtfs, 26985 SDslu, 3366 SDs, 0 SdLazy, 33937 SolverSat, 6038 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 13511 GetRequests, 13126 SyntacticMatches, 18 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4609 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18955occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 57.3s AbstIntTime, 13 AbstIntIterations, 3 AbstIntStrong, 0.9969494427741242 AbsIntWeakeningRatio, 0.1093969144460028 AbsIntAvgWeakeningVarsNumRemoved, 15.848527349228611 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 3394 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 22.4s InterpolantComputationTime, 13203 NumberOfCodeBlocks, 13203 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 19336 ConstructedInterpolants, 0 QuantifiedInterpolants, 49067313 SizeOfPredicates, 22 NumberOfNonLiveVariables, 9097 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 33390/37014 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown