java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 03:07:00,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 03:07:00,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 03:07:00,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 03:07:00,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 03:07:00,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 03:07:00,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 03:07:00,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 03:07:00,672 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 03:07:00,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 03:07:00,673 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 03:07:00,674 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 03:07:00,674 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 03:07:00,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 03:07:00,674 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 03:07:00,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 03:07:00,675 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 03:07:00,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 03:07:00,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 03:07:00,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 03:07:00,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 03:07:00,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 03:07:00,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 03:07:00,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 03:07:00,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 03:07:00,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 03:07:00,678 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 03:07:00,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 03:07:00,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 03:07:00,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 03:07:00,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 03:07:00,680 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 03:07:00,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 03:07:00,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 03:07:00,680 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 03:07:00,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 03:07:00,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 03:07:00,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 03:07:00,759 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 03:07:00,760 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 03:07:00,761 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2019-09-10 03:07:00,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb6c5f5c/6ff2746a32344874b6e3d701447a5ecf/FLAG7384f9ee2 [2019-09-10 03:07:01,272 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 03:07:01,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2019-09-10 03:07:01,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb6c5f5c/6ff2746a32344874b6e3d701447a5ecf/FLAG7384f9ee2 [2019-09-10 03:07:01,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb6c5f5c/6ff2746a32344874b6e3d701447a5ecf [2019-09-10 03:07:01,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 03:07:01,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 03:07:01,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 03:07:01,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 03:07:01,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 03:07:01,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:01,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40163c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01, skipping insertion in model container [2019-09-10 03:07:01,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:01,699 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 03:07:01,712 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 03:07:01,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 03:07:01,906 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 03:07:01,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 03:07:01,936 INFO L192 MainTranslator]: Completed translation [2019-09-10 03:07:01,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01 WrapperNode [2019-09-10 03:07:01,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 03:07:01,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 03:07:01,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 03:07:01,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 03:07:02,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (1/1) ... [2019-09-10 03:07:02,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 03:07:02,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 03:07:02,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 03:07:02,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 03:07:02,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (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 [2019-09-10 03:07:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 03:07:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 03:07:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-09-10 03:07:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 03:07:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 03:07:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 03:07:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-09-10 03:07:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 03:07:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 03:07:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 03:07:02,265 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 03:07:02,265 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 03:07:02,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 03:07:02 BoogieIcfgContainer [2019-09-10 03:07:02,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 03:07:02,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 03:07:02,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 03:07:02,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 03:07:02,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 03:07:01" (1/3) ... [2019-09-10 03:07:02,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b92dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 03:07:02, skipping insertion in model container [2019-09-10 03:07:02,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 03:07:01" (2/3) ... [2019-09-10 03:07:02,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b92dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 03:07:02, skipping insertion in model container [2019-09-10 03:07:02,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 03:07:02" (3/3) ... [2019-09-10 03:07:02,274 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2019-09-10 03:07:02,283 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 03:07:02,291 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 03:07:02,306 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 03:07:02,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 03:07:02,333 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 03:07:02,333 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 03:07:02,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 03:07:02,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 03:07:02,333 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 03:07:02,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 03:07:02,334 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 03:07:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-10 03:07:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 03:07:02,359 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:02,360 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:02,362 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:02,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:02,367 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2019-09-10 03:07:02,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:02,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:02,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:02,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:02,408 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 03:07:02,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 03:07:02,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 03:07:02,571 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:07:02,575 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 03:07:02,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 03:07:02,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 03:07:02,601 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-09-10 03:07:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:02,680 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-10 03:07:02,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 03:07:02,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-10 03:07:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:02,696 INFO L225 Difference]: With dead ends: 22 [2019-09-10 03:07:02,696 INFO L226 Difference]: Without dead ends: 18 [2019-09-10 03:07:02,698 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 03:07:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-10 03:07:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-10 03:07:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-10 03:07:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-10 03:07:02,736 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-09-10 03:07:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:02,736 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-10 03:07:02,736 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 03:07:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-10 03:07:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 03:07:02,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:02,738 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:02,739 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2019-09-10 03:07:02,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:02,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:02,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:02,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:02,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 03:07:02,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:02,818 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:02,819 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-10 03:07:02,821 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [17], [20], [21], [23], [24], [25], [26], [27], [29], [30], [31], [32] [2019-09-10 03:07:02,852 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 03:07:02,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 03:07:03,018 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 03:07:03,021 INFO L272 AbstractInterpreter]: Visited 16 different actions 104 times. Merged at 5 different actions 41 times. Widened at 1 different actions 4 times. Performed 155 root evaluator evaluations with a maximum evaluation depth of 3. Performed 155 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2019-09-10 03:07:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:03,025 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 03:07:03,084 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 58.33% of their original sizes. [2019-09-10 03:07:03,084 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 03:07:03,210 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-10 03:07:03,211 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 03:07:03,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 03:07:03,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2019-09-10 03:07:03,212 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 03:07:03,213 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-10 03:07:03,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-10 03:07:03,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-09-10 03:07:03,215 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 12 states. [2019-09-10 03:07:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:03,551 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-09-10 03:07:03,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 03:07:03,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-09-10 03:07:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:03,553 INFO L225 Difference]: With dead ends: 30 [2019-09-10 03:07:03,553 INFO L226 Difference]: Without dead ends: 30 [2019-09-10 03:07:03,555 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-09-10 03:07:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-10 03:07:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-09-10 03:07:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-10 03:07:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-09-10 03:07:03,569 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 19 [2019-09-10 03:07:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:03,570 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-09-10 03:07:03,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-10 03:07:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-09-10 03:07:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 03:07:03,574 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:03,574 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:03,574 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2019-09-10 03:07:03,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:03,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:03,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:03,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:03,578 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-10 03:07:03,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:03,696 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:03,696 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:03,698 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:03,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:03,698 INFO L193 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 [2019-09-10 03:07:03,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:07:03,714 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 03:07:03,735 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-10 03:07:03,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:03,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-10 03:07:03,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-10 03:07:03,784 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:04,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:04,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 03:07:04,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:04,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 11 [2019-09-10 03:07:04,149 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:04,149 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 03:07:04,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 03:07:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-09-10 03:07:04,151 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2019-09-10 03:07:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:04,222 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-09-10 03:07:04,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 03:07:04,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-09-10 03:07:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:04,224 INFO L225 Difference]: With dead ends: 45 [2019-09-10 03:07:04,224 INFO L226 Difference]: Without dead ends: 39 [2019-09-10 03:07:04,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-09-10 03:07:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-10 03:07:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2019-09-10 03:07:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 03:07:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-09-10 03:07:04,232 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2019-09-10 03:07:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:04,232 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-09-10 03:07:04,232 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 03:07:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-09-10 03:07:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-10 03:07:04,234 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:04,234 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:04,234 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2019-09-10 03:07:04,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:04,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:04,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:04,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:04,236 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 03:07:04,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:04,333 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:04,333 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:04,334 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:04,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:04,334 INFO L193 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) [2019-09-10 03:07:04,350 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:07:04,350 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:07:04,369 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:07:04,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:04,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-10 03:07:04,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 03:07:04,401 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:04,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:04,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:04,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 03:07:04,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:04,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 13 [2019-09-10 03:07:04,931 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:04,932 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 03:07:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 03:07:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-09-10 03:07:04,933 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2019-09-10 03:07:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:05,014 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2019-09-10 03:07:05,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 03:07:05,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-09-10 03:07:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:05,018 INFO L225 Difference]: With dead ends: 48 [2019-09-10 03:07:05,018 INFO L226 Difference]: Without dead ends: 42 [2019-09-10 03:07:05,019 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2019-09-10 03:07:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-10 03:07:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2019-09-10 03:07:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-10 03:07:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-09-10 03:07:05,025 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 31 [2019-09-10 03:07:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:05,026 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-09-10 03:07:05,026 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 03:07:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-09-10 03:07:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-10 03:07:05,027 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:05,027 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:05,028 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2019-09-10 03:07:05,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:05,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:05,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:05,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:05,029 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 03:07:05,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:05,118 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:05,118 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:05,118 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:05,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:05,119 INFO L193 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) [2019-09-10 03:07:05,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:05,134 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:07:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:05,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-10 03:07:05,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 03:07:05,166 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:05,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:05,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:05,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:05,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 03:07:06,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:06,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 15 [2019-09-10 03:07:06,026 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:06,027 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 03:07:06,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 03:07:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-09-10 03:07:06,028 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 9 states. [2019-09-10 03:07:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:06,124 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2019-09-10 03:07:06,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 03:07:06,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-09-10 03:07:06,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:06,133 INFO L225 Difference]: With dead ends: 51 [2019-09-10 03:07:06,133 INFO L226 Difference]: Without dead ends: 45 [2019-09-10 03:07:06,134 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2019-09-10 03:07:06,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-10 03:07:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-09-10 03:07:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 03:07:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-09-10 03:07:06,141 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 37 [2019-09-10 03:07:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:06,141 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-09-10 03:07:06,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 03:07:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-09-10 03:07:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 03:07:06,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:06,143 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:06,143 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:06,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:06,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2019-09-10 03:07:06,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:06,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:06,145 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-09-10 03:07:06,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:06,267 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:06,267 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:06,267 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:06,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:06,268 INFO L193 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 [2019-09-10 03:07:06,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:07:06,279 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 03:07:06,309 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-09-10 03:07:06,310 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:06,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 03:07:06,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-09-10 03:07:06,337 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:07,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:07,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:07,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:07,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:07,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 03:07:07,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:07,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2019-09-10 03:07:07,652 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:07,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 03:07:07,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 03:07:07,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2019-09-10 03:07:07,653 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 10 states. [2019-09-10 03:07:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:07,769 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2019-09-10 03:07:07,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 03:07:07,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2019-09-10 03:07:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:07,772 INFO L225 Difference]: With dead ends: 54 [2019-09-10 03:07:07,772 INFO L226 Difference]: Without dead ends: 48 [2019-09-10 03:07:07,772 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2019-09-10 03:07:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-10 03:07:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2019-09-10 03:07:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-10 03:07:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-09-10 03:07:07,781 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 43 [2019-09-10 03:07:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:07,781 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2019-09-10 03:07:07,782 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 03:07:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2019-09-10 03:07:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-10 03:07:07,783 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:07,783 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:07,784 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:07,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2019-09-10 03:07:07,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:07,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:07,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:07,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:07,786 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-09-10 03:07:07,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:07,891 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:07,891 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:07,891 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:07,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:07,891 INFO L193 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 [2019-09-10 03:07:07,904 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:07:07,905 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-09-10 03:07:07,930 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:07:07,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:07,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-10 03:07:07,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-09-10 03:07:07,955 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:09,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:09,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:09,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:09,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:09,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:09,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 03:07:09,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:09,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2019-09-10 03:07:09,904 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:09,905 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 03:07:09,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 03:07:09,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-09-10 03:07:09,906 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2019-09-10 03:07:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:10,030 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2019-09-10 03:07:10,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 03:07:10,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2019-09-10 03:07:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:10,032 INFO L225 Difference]: With dead ends: 57 [2019-09-10 03:07:10,032 INFO L226 Difference]: Without dead ends: 51 [2019-09-10 03:07:10,033 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 83 SyntacticMatches, 14 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2019-09-10 03:07:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-10 03:07:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2019-09-10 03:07:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-10 03:07:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-09-10 03:07:10,040 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 49 [2019-09-10 03:07:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:10,040 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2019-09-10 03:07:10,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 03:07:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2019-09-10 03:07:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-10 03:07:10,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:10,042 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:10,042 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1532150511, now seen corresponding path program 7 times [2019-09-10 03:07:10,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:10,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:10,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:10,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:10,044 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-10 03:07:10,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:10,142 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:10,142 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:10,142 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:10,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:10,142 INFO L193 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 [2019-09-10 03:07:10,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:10,154 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 03:07:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:10,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-10 03:07:10,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-10 03:07:10,205 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:11,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:12,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:12,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:12,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:12,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:12,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:13,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-10 03:07:13,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:13,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 21 [2019-09-10 03:07:13,088 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:13,089 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-10 03:07:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-10 03:07:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2019-09-10 03:07:13,090 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 12 states. [2019-09-10 03:07:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:13,232 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2019-09-10 03:07:13,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-10 03:07:13,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2019-09-10 03:07:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:13,235 INFO L225 Difference]: With dead ends: 60 [2019-09-10 03:07:13,235 INFO L226 Difference]: Without dead ends: 54 [2019-09-10 03:07:13,236 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 16 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2019-09-10 03:07:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-09-10 03:07:13,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-09-10 03:07:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-09-10 03:07:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-09-10 03:07:13,243 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 55 [2019-09-10 03:07:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:13,243 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2019-09-10 03:07:13,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-10 03:07:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2019-09-10 03:07:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-10 03:07:13,245 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:13,245 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:13,245 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1140618237, now seen corresponding path program 8 times [2019-09-10 03:07:13,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:13,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:13,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:13,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:13,247 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-09-10 03:07:13,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:13,375 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:13,375 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:13,376 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:13,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:13,376 INFO L193 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) [2019-09-10 03:07:13,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:07:13,391 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:07:13,413 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-09-10 03:07:13,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:13,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-10 03:07:13,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-09-10 03:07:13,668 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-09-10 03:07:16,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:16,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 21] total 51 [2019-09-10 03:07:16,727 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:16,727 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-10 03:07:16,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-10 03:07:16,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2140, Unknown=0, NotChecked=0, Total=2550 [2019-09-10 03:07:16,729 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 32 states. [2019-09-10 03:07:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:17,174 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-09-10 03:07:17,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-10 03:07:17,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 61 [2019-09-10 03:07:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:17,176 INFO L225 Difference]: With dead ends: 63 [2019-09-10 03:07:17,176 INFO L226 Difference]: Without dead ends: 57 [2019-09-10 03:07:17,178 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=832, Invalid=3724, Unknown=0, NotChecked=0, Total=4556 [2019-09-10 03:07:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-09-10 03:07:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2019-09-10 03:07:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-10 03:07:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-09-10 03:07:17,184 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 61 [2019-09-10 03:07:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:17,185 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2019-09-10 03:07:17,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-10 03:07:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2019-09-10 03:07:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 03:07:17,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:17,186 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:17,187 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:17,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177617, now seen corresponding path program 9 times [2019-09-10 03:07:17,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:17,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:17,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:17,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:17,188 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-10 03:07:17,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:17,329 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:17,330 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:17,330 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:17,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:17,330 INFO L193 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 [2019-09-10 03:07:17,344 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:07:17,344 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-09-10 03:07:17,385 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:07:17,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:17,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 03:07:17,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-10 03:07:17,403 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:20,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:20,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:21,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-09-10 03:07:22,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:22,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2019-09-10 03:07:22,898 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:22,898 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-10 03:07:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-10 03:07:22,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2019-09-10 03:07:22,899 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 14 states. [2019-09-10 03:07:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:23,043 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2019-09-10 03:07:23,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-10 03:07:23,043 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2019-09-10 03:07:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:23,044 INFO L225 Difference]: With dead ends: 66 [2019-09-10 03:07:23,044 INFO L226 Difference]: Without dead ends: 60 [2019-09-10 03:07:23,045 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 113 SyntacticMatches, 20 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=802, Unknown=0, NotChecked=0, Total=1190 [2019-09-10 03:07:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-09-10 03:07:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2019-09-10 03:07:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-10 03:07:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2019-09-10 03:07:23,052 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 67 [2019-09-10 03:07:23,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:23,053 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2019-09-10 03:07:23,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-10 03:07:23,053 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2019-09-10 03:07:23,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-10 03:07:23,054 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:23,054 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:23,055 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:23,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1580609155, now seen corresponding path program 10 times [2019-09-10 03:07:23,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:23,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:23,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:23,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:23,057 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-09-10 03:07:23,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:23,220 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:23,220 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:23,220 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:23,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:23,220 INFO L193 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) [2019-09-10 03:07:23,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:23,238 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:07:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:23,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-10 03:07:23,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-09-10 03:07:23,286 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:26,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:27,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:28,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:29,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:29,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:30,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:30,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:30,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:30,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:30,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-09-10 03:07:30,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:30,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 27 [2019-09-10 03:07:30,649 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:30,651 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-10 03:07:30,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-10 03:07:30,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2019-09-10 03:07:30,652 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 15 states. [2019-09-10 03:07:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:30,815 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2019-09-10 03:07:30,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-10 03:07:30,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2019-09-10 03:07:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:30,817 INFO L225 Difference]: With dead ends: 69 [2019-09-10 03:07:30,817 INFO L226 Difference]: Without dead ends: 63 [2019-09-10 03:07:30,818 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 22 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=947, Unknown=0, NotChecked=0, Total=1406 [2019-09-10 03:07:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-09-10 03:07:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2019-09-10 03:07:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-09-10 03:07:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2019-09-10 03:07:30,824 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 73 [2019-09-10 03:07:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:30,825 INFO L475 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2019-09-10 03:07:30,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-10 03:07:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2019-09-10 03:07:30,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-10 03:07:30,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:30,827 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:30,827 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:30,827 INFO L82 PathProgramCache]: Analyzing trace with hash -223837457, now seen corresponding path program 11 times [2019-09-10 03:07:30,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:30,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:30,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:30,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:30,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-09-10 03:07:30,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:30,972 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:30,972 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:30,973 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:30,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:30,973 INFO L193 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 [2019-09-10 03:07:30,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:07:30,986 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 03:07:31,012 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-09-10 03:07:31,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:31,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-10 03:07:31,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-09-10 03:07:31,034 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:35,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:36,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:37,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:38,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:39,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:39,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:40,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:40,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:40,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:40,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:40,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-10 03:07:40,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:40,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 29 [2019-09-10 03:07:40,692 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:40,692 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-10 03:07:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-10 03:07:40,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2019-09-10 03:07:40,695 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 16 states. [2019-09-10 03:07:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:40,931 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2019-09-10 03:07:40,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-10 03:07:40,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2019-09-10 03:07:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:40,933 INFO L225 Difference]: With dead ends: 72 [2019-09-10 03:07:40,933 INFO L226 Difference]: Without dead ends: 66 [2019-09-10 03:07:40,934 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 133 SyntacticMatches, 24 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=536, Invalid=1104, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 03:07:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-09-10 03:07:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2019-09-10 03:07:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-10 03:07:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-09-10 03:07:40,940 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 79 [2019-09-10 03:07:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:40,941 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2019-09-10 03:07:40,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-10 03:07:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2019-09-10 03:07:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-10 03:07:40,942 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:40,942 INFO L399 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:40,943 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:40,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1653931773, now seen corresponding path program 12 times [2019-09-10 03:07:40,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:40,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:40,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:40,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:40,944 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-09-10 03:07:41,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:41,141 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:41,141 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:41,141 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:41,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:41,141 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 03:07:41,170 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:07:41,170 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:07:41,213 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:07:41,214 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:07:41,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-10 03:07:41,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-09-10 03:07:41,237 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:46,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:47,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:49,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:50,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:51,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:52,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:52,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:52,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:53,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:53,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:53,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:53,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:07:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-10 03:07:53,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:07:53,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 31 [2019-09-10 03:07:53,384 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:07:53,384 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 03:07:53,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 03:07:53,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2019-09-10 03:07:53,386 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 17 states. [2019-09-10 03:07:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:07:53,712 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2019-09-10 03:07:53,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-10 03:07:53,712 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2019-09-10 03:07:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:07:53,713 INFO L225 Difference]: With dead ends: 75 [2019-09-10 03:07:53,714 INFO L226 Difference]: Without dead ends: 69 [2019-09-10 03:07:53,715 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 143 SyntacticMatches, 26 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=619, Invalid=1273, Unknown=0, NotChecked=0, Total=1892 [2019-09-10 03:07:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-09-10 03:07:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2019-09-10 03:07:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-09-10 03:07:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-09-10 03:07:53,731 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 85 [2019-09-10 03:07:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:07:53,732 INFO L475 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2019-09-10 03:07:53,732 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 03:07:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2019-09-10 03:07:53,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-10 03:07:53,733 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:07:53,733 INFO L399 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:07:53,734 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:07:53,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:07:53,737 INFO L82 PathProgramCache]: Analyzing trace with hash -218674449, now seen corresponding path program 13 times [2019-09-10 03:07:53,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:07:53,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:53,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:07:53,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:07:53,738 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:07:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-09-10 03:07:53,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:53,947 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:07:53,947 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:07:53,947 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:07:53,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:07:53,947 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:07:53,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:07:53,958 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 03:07:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:07:53,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-10 03:07:53,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:07:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-09-10 03:07:54,015 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:07:59,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:02,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:03,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:05,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:06,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:07,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:08,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:08,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:08,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:09,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:09,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:09,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:09,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-09-10 03:08:09,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:08:09,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 33 [2019-09-10 03:08:09,395 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:08:09,396 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-10 03:08:09,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-10 03:08:09,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2019-09-10 03:08:09,398 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 18 states. [2019-09-10 03:08:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:08:09,672 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2019-09-10 03:08:09,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-10 03:08:09,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2019-09-10 03:08:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:08:09,675 INFO L225 Difference]: With dead ends: 78 [2019-09-10 03:08:09,675 INFO L226 Difference]: Without dead ends: 72 [2019-09-10 03:08:09,676 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 153 SyntacticMatches, 28 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=708, Invalid=1454, Unknown=0, NotChecked=0, Total=2162 [2019-09-10 03:08:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-09-10 03:08:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2019-09-10 03:08:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-09-10 03:08:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2019-09-10 03:08:09,684 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 91 [2019-09-10 03:08:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:08:09,685 INFO L475 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2019-09-10 03:08:09,685 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-10 03:08:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2019-09-10 03:08:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-10 03:08:09,689 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:08:09,689 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:08:09,689 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:08:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:08:09,690 INFO L82 PathProgramCache]: Analyzing trace with hash 492436605, now seen corresponding path program 14 times [2019-09-10 03:08:09,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:08:09,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:08:09,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:08:09,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:08:09,691 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:08:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:08:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-09-10 03:08:09,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:08:09,915 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:08:09,915 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:08:09,916 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:08:09,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:08:09,916 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:08:09,934 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:08:09,934 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 03:08:09,988 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2019-09-10 03:08:09,988 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:08:09,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-10 03:08:09,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:08:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-09-10 03:08:10,026 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:08:16,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:19,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:21,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:23,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:25,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:26,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:27,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:27,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:28,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:28,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:28,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:29,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:29,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:29,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 03:08:29,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:08:29,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 35 [2019-09-10 03:08:29,285 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:08:29,285 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-10 03:08:29,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-10 03:08:29,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2019-09-10 03:08:29,286 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 19 states. [2019-09-10 03:08:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:08:29,590 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2019-09-10 03:08:29,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-10 03:08:29,590 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2019-09-10 03:08:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:08:29,592 INFO L225 Difference]: With dead ends: 81 [2019-09-10 03:08:29,592 INFO L226 Difference]: Without dead ends: 75 [2019-09-10 03:08:29,593 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 163 SyntacticMatches, 30 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=803, Invalid=1647, Unknown=0, NotChecked=0, Total=2450 [2019-09-10 03:08:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-09-10 03:08:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2019-09-10 03:08:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-09-10 03:08:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2019-09-10 03:08:29,598 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 97 [2019-09-10 03:08:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:08:29,599 INFO L475 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2019-09-10 03:08:29,599 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-10 03:08:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2019-09-10 03:08:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 03:08:29,600 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:08:29,601 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:08:29,601 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:08:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:08:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1083048687, now seen corresponding path program 15 times [2019-09-10 03:08:29,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:08:29,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:08:29,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:08:29,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:08:29,603 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:08:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:08:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-09-10 03:08:29,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:08:29,859 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:08:29,859 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:08:29,860 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:08:29,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:08:29,860 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:08:29,879 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:08:29,880 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-09-10 03:08:29,915 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:08:29,916 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:08:29,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-10 03:08:29,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:08:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-09-10 03:08:29,942 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:08:32,631 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:08:32,830 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-09-10 03:08:32,932 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-09-10 03:08:36,821 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-09-10 03:08:38,069 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:41,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:43,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:46,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:48,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:49,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:50,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:51,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:52,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:52,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:53,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:53,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:53,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:53,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:53,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:08:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-10 03:08:53,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:08:53,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 37 [2019-09-10 03:08:53,620 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:08:53,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-10 03:08:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-10 03:08:53,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2019-09-10 03:08:53,622 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 20 states. [2019-09-10 03:08:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:08:53,917 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2019-09-10 03:08:53,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-10 03:08:53,917 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2019-09-10 03:08:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:08:53,919 INFO L225 Difference]: With dead ends: 84 [2019-09-10 03:08:53,919 INFO L226 Difference]: Without dead ends: 78 [2019-09-10 03:08:53,921 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 173 SyntacticMatches, 32 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=904, Invalid=1852, Unknown=0, NotChecked=0, Total=2756 [2019-09-10 03:08:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-09-10 03:08:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2019-09-10 03:08:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-09-10 03:08:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2019-09-10 03:08:53,925 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 103 [2019-09-10 03:08:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:08:53,926 INFO L475 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2019-09-10 03:08:53,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-10 03:08:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2019-09-10 03:08:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-10 03:08:53,927 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:08:53,927 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:08:53,928 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:08:53,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:08:53,928 INFO L82 PathProgramCache]: Analyzing trace with hash 404015613, now seen corresponding path program 16 times [2019-09-10 03:08:53,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:08:53,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:08:53,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:08:53,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:08:53,929 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:08:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:08:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-09-10 03:08:54,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:08:54,144 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:08:54,144 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:08:54,145 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:08:54,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:08:54,145 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:08:54,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:08:54,157 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 03:08:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:08:54,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 36 conjunts are in the unsatisfiable core [2019-09-10 03:08:54,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:08:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-09-10 03:08:54,211 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:08:57,125 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:08:57,229 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:08:57,346 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:08:57,457 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:08:57,568 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-09-10 03:08:57,679 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-09-10 03:08:57,792 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:08:57,904 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:08:58,005 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:08:58,107 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-09-10 03:09:01,897 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-09-10 03:09:02,002 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:09:02,209 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:09:02,318 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:09:03,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:07,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:10,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:13,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:15,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:17,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:18,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:20,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:20,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:21,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-09-10 03:09:22,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:09:22,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 37] total 39 [2019-09-10 03:09:22,844 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:09:22,844 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-10 03:09:22,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-10 03:09:22,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1100, Unknown=0, NotChecked=0, Total=1482 [2019-09-10 03:09:22,845 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2019-09-10 03:09:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:09:23,158 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2019-09-10 03:09:23,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-10 03:09:23,160 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 109 [2019-09-10 03:09:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:09:23,162 INFO L225 Difference]: With dead ends: 87 [2019-09-10 03:09:23,162 INFO L226 Difference]: Without dead ends: 81 [2019-09-10 03:09:23,164 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 183 SyntacticMatches, 34 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1011, Invalid=2069, Unknown=0, NotChecked=0, Total=3080 [2019-09-10 03:09:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-09-10 03:09:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2019-09-10 03:09:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-09-10 03:09:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2019-09-10 03:09:23,169 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 109 [2019-09-10 03:09:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:09:23,169 INFO L475 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2019-09-10 03:09:23,169 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-10 03:09:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2019-09-10 03:09:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-10 03:09:23,171 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:09:23,171 INFO L399 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:09:23,171 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:09:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:09:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash -464475409, now seen corresponding path program 17 times [2019-09-10 03:09:23,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:09:23,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:09:23,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:09:23,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:09:23,173 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:09:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:09:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2019-09-10 03:09:23,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:09:23,402 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:09:23,402 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:09:23,402 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:09:23,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:09:23,402 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:09:23,414 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:09:23,414 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 03:09:23,454 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-09-10 03:09:23,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:09:23,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-10 03:09:23,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:09:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2019-09-10 03:09:23,490 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:09:26,404 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:09:26,610 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:09:26,719 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:09:26,833 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:09:26,946 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:09:27,072 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:09:27,191 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:09:27,324 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-09-10 03:09:27,455 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-09-10 03:09:27,580 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:09:27,699 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:09:27,814 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:09:27,918 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:09:28,022 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-09-10 03:09:32,006 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:09:32,211 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:09:32,314 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:09:32,430 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:09:32,539 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:09:32,653 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:09:32,778 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:09:32,891 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:09:32,996 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:09:34,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:37,254 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:09:37,744 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:09:38,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:42,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:45,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:48,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:50,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:52,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:54,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:55,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:56,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:56,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:57,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:57,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:57,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:57,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:57,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:57,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:09:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-09-10 03:09:58,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:09:58,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 41 [2019-09-10 03:09:58,036 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:09:58,036 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-10 03:09:58,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-10 03:09:58,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1218, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 03:09:58,037 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 22 states. [2019-09-10 03:09:58,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:09:58,363 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2019-09-10 03:09:58,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-10 03:09:58,364 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2019-09-10 03:09:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:09:58,366 INFO L225 Difference]: With dead ends: 90 [2019-09-10 03:09:58,366 INFO L226 Difference]: Without dead ends: 84 [2019-09-10 03:09:58,367 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 193 SyntacticMatches, 36 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1124, Invalid=2298, Unknown=0, NotChecked=0, Total=3422 [2019-09-10 03:09:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-09-10 03:09:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2019-09-10 03:09:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-09-10 03:09:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2019-09-10 03:09:58,371 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 115 [2019-09-10 03:09:58,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:09:58,372 INFO L475 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2019-09-10 03:09:58,372 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-10 03:09:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2019-09-10 03:09:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-10 03:09:58,373 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:09:58,373 INFO L399 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:09:58,373 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:09:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:09:58,374 INFO L82 PathProgramCache]: Analyzing trace with hash 130115453, now seen corresponding path program 18 times [2019-09-10 03:09:58,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:09:58,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:09:58,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:09:58,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:09:58,375 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:09:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:09:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-09-10 03:09:58,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:09:58,668 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:09:58,668 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:09:58,668 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:09:58,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:09:58,669 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 03:09:58,695 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:09:58,695 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:09:58,733 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:09:58,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:09:58,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 40 conjunts are in the unsatisfiable core [2019-09-10 03:09:58,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:09:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-09-10 03:09:58,764 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:10:01,457 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:01,659 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:01,766 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:01,884 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:01,995 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:02,117 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:02,240 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:02,355 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:02,474 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:02,602 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:02,725 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:02,870 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:10:02,998 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:10:03,134 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-09-10 03:10:03,269 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-09-10 03:10:03,400 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-10 03:10:03,525 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:10:03,642 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-09-10 03:10:03,756 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:10:03,868 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-09-10 03:10:03,981 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:10:07,712 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2019-09-10 03:10:08,094 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-09-10 03:10:08,407 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:08,516 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:08,630 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:08,736 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:08,852 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:08,974 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:09,097 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:09,216 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:09,340 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:09,463 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:09,587 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:10:09,702 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:10:09,815 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:10:09,923 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:10:10,029 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:10:11,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:14,140 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:14,255 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:14,468 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:14,575 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:14,692 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:14,808 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:14,920 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:10:15,028 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:10:15,130 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-10 03:10:16,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:19,177 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:19,279 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:19,382 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:20,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:24,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:27,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:30,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:32,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:34,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:35,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:37,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:37,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:38,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-09-10 03:10:39,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:10:39,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 41] total 43 [2019-09-10 03:10:39,922 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:10:39,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-10 03:10:39,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-10 03:10:39,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=1342, Unknown=0, NotChecked=0, Total=1806 [2019-09-10 03:10:39,924 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 23 states. [2019-09-10 03:10:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:10:40,271 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2019-09-10 03:10:40,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-10 03:10:40,271 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 121 [2019-09-10 03:10:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:10:40,273 INFO L225 Difference]: With dead ends: 93 [2019-09-10 03:10:40,273 INFO L226 Difference]: Without dead ends: 87 [2019-09-10 03:10:40,275 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 203 SyntacticMatches, 38 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1243, Invalid=2539, Unknown=0, NotChecked=0, Total=3782 [2019-09-10 03:10:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-09-10 03:10:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2019-09-10 03:10:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-09-10 03:10:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2019-09-10 03:10:40,279 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 121 [2019-09-10 03:10:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:10:40,279 INFO L475 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2019-09-10 03:10:40,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-10 03:10:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2019-09-10 03:10:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-10 03:10:40,280 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:10:40,281 INFO L399 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:10:40,281 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:10:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:10:40,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2010955025, now seen corresponding path program 19 times [2019-09-10 03:10:40,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:10:40,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:10:40,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:10:40,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:10:40,282 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:10:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:10:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2019-09-10 03:10:40,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:10:40,536 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:10:40,536 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:10:40,536 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:10:40,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:10:40,536 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:10:40,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:10:40,555 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 03:10:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:10:40,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-10 03:10:40,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:10:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2019-09-10 03:10:40,621 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:10:43,339 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:43,440 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:43,553 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:43,663 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:43,781 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:43,903 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:44,025 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:44,144 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:44,262 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:44,389 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:44,514 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:44,640 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:44,772 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:10:44,896 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:10:45,042 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:10:45,168 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:10:45,313 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:10:45,451 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:10:45,600 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-09-10 03:10:45,741 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-09-10 03:10:45,886 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-09-10 03:10:46,020 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-09-10 03:10:46,159 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-10 03:10:46,288 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-09-10 03:10:46,410 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:10:46,527 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:10:46,642 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:10:46,753 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 03:10:46,857 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:10:50,823 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:51,031 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:51,140 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:51,254 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:51,369 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:51,483 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:51,595 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:51,718 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:51,834 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:51,950 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:52,071 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:52,203 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:10:52,329 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:10:52,460 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:10:52,590 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:10:52,732 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-10 03:10:52,862 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-10 03:10:52,986 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:10:53,104 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:10:53,217 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:10:53,322 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:10:53,427 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-09-10 03:10:54,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:10:57,419 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:57,521 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:10:57,628 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:57,739 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:10:57,856 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:57,966 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:10:58,083 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:58,199 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:10:58,316 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:58,428 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:10:58,555 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:58,676 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:10:58,806 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:10:58,931 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:10:59,041 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:10:59,144 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:10:59,247 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-10 03:11:00,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:03,250 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:03,353 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:03,560 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:03,670 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:03,780 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:03,890 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:11:03,991 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:11:05,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:09,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:12,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:16,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:18,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:21,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:22,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:24,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:25,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:26,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:27,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:27,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:27,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:27,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:28,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:28,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:28,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:11:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2019-09-10 03:11:28,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:11:28,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 43] total 45 [2019-09-10 03:11:28,250 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:11:28,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-10 03:11:28,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-10 03:11:28,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=1472, Unknown=0, NotChecked=0, Total=1980 [2019-09-10 03:11:28,252 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 24 states. [2019-09-10 03:11:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:11:28,665 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2019-09-10 03:11:28,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-10 03:11:28,665 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 127 [2019-09-10 03:11:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:11:28,667 INFO L225 Difference]: With dead ends: 96 [2019-09-10 03:11:28,667 INFO L226 Difference]: Without dead ends: 90 [2019-09-10 03:11:28,668 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 213 SyntacticMatches, 40 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1368, Invalid=2792, Unknown=0, NotChecked=0, Total=4160 [2019-09-10 03:11:28,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-09-10 03:11:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2019-09-10 03:11:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-09-10 03:11:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2019-09-10 03:11:28,676 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 127 [2019-09-10 03:11:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:11:28,677 INFO L475 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2019-09-10 03:11:28,677 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-10 03:11:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2019-09-10 03:11:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-10 03:11:28,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:11:28,680 INFO L399 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:11:28,680 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:11:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:11:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -799288067, now seen corresponding path program 20 times [2019-09-10 03:11:28,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:11:28,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:11:28,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:11:28,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:11:28,684 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:11:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:11:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2019-09-10 03:11:28,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:11:28,976 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:11:28,976 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:11:28,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:11:28,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:11:28,976 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:11:28,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:11:28,987 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 03:11:29,036 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2019-09-10 03:11:29,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:11:29,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 44 conjunts are in the unsatisfiable core [2019-09-10 03:11:29,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:11:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2019-09-10 03:11:29,983 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:11:32,834 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:33,040 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:33,143 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:33,255 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:33,363 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:33,480 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:33,596 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:33,718 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:11:33,848 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:11:33,976 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:11:34,100 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:11:34,228 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:11:34,359 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:11:34,492 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:11:34,624 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:11:34,768 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:11:34,905 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:11:35,051 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:11:35,193 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:11:38,256 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:38,359 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:38,468 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:38,583 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:38,699 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:38,811 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:38,935 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:11:39,057 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:11:39,187 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:11:39,311 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:11:39,457 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:11:39,584 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:11:39,725 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:11:39,865 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:11:42,700 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:42,905 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:43,007 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:43,128 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:43,237 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:43,353 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:43,466 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:43,585 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:11:43,704 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:11:43,829 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:11:43,952 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:11:46,728 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:11:46,840 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:46,950 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:47,062 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:47,171 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:47,292 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:47,404 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:11:47,521 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:47,630 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:11:50,481 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:50,582 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:11:50,690 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:11:50,799 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2019-09-10 03:12:06,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:12:06,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 45, 45] total 78 [2019-09-10 03:12:06,264 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:12:06,264 INFO L454 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-09-10 03:12:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-09-10 03:12:06,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=941, Invalid=5065, Unknown=0, NotChecked=0, Total=6006 [2019-09-10 03:12:06,267 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 68 states. [2019-09-10 03:12:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:12:07,756 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2019-09-10 03:12:07,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-10 03:12:07,757 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 133 [2019-09-10 03:12:07,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:12:07,758 INFO L225 Difference]: With dead ends: 99 [2019-09-10 03:12:07,758 INFO L226 Difference]: Without dead ends: 93 [2019-09-10 03:12:07,762 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 201 SyntacticMatches, 33 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4560 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2510, Invalid=11532, Unknown=0, NotChecked=0, Total=14042 [2019-09-10 03:12:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-09-10 03:12:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2019-09-10 03:12:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-09-10 03:12:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-09-10 03:12:07,767 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 133 [2019-09-10 03:12:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:12:07,767 INFO L475 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2019-09-10 03:12:07,767 INFO L476 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-09-10 03:12:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2019-09-10 03:12:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-10 03:12:07,768 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:12:07,769 INFO L399 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:12:07,769 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:12:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:12:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1226192145, now seen corresponding path program 21 times [2019-09-10 03:12:07,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:12:07,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:12:07,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:12:07,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:12:07,770 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:12:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:12:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2019-09-10 03:12:08,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:12:08,059 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:12:08,059 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:12:08,059 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:12:08,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:12:08,060 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:12:08,069 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:12:08,069 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-09-10 03:12:08,119 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:12:08,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:12:08,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 46 conjunts are in the unsatisfiable core [2019-09-10 03:12:08,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:12:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2019-09-10 03:12:08,156 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:12:11,135 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:11,247 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:11,355 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:11,464 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:11,579 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:11,692 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:11,815 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:11,931 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:12,059 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:12,179 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:12,317 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:12,444 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:12,574 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:12:12,706 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:12:12,849 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:12:12,998 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:12:13,144 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:12:13,291 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:12:13,446 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:12:13,589 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:12:13,750 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:12:13,902 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:12:14,065 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 03:12:14,221 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 03:12:14,381 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-09-10 03:12:14,540 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-09-10 03:12:14,685 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-09-10 03:12:14,828 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-09-10 03:12:14,960 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-09-10 03:12:15,091 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-10 03:12:15,221 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-10 03:12:15,343 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:12:15,461 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:12:15,574 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:12:15,681 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:12:15,786 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-10 03:12:19,880 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:12:20,079 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:20,184 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:20,295 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:20,402 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:20,516 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:20,627 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:20,750 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:20,865 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:20,992 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:21,114 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:21,245 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:21,380 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:21,525 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:12:21,662 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:12:21,801 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:12:21,947 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:12:22,092 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:12:22,233 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:12:22,380 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:12:22,533 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:12:22,684 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-09-10 03:12:22,827 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-09-10 03:12:22,960 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-09-10 03:12:23,089 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-09-10 03:12:23,216 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-10 03:12:23,346 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-09-10 03:12:23,463 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:12:23,575 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:12:23,682 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:12:23,786 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 03:12:23,890 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:12:25,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:28,113 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:28,219 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:28,329 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:28,437 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:28,555 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:28,664 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:28,786 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:28,904 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:29,027 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:29,145 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:29,274 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:29,399 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:29,537 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:12:29,665 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:12:29,807 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:12:29,945 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:12:30,085 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-09-10 03:12:30,216 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-09-10 03:12:30,340 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-10 03:12:30,463 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:12:30,578 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-09-10 03:12:30,681 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:12:30,787 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-09-10 03:12:30,989 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:12:32,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:35,058 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:12:35,163 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:35,373 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:35,481 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:35,602 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:35,714 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:35,830 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:35,948 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:36,076 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:36,198 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:12:36,332 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:36,457 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:12:36,586 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-10 03:12:36,705 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-10 03:12:36,818 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:12:36,933 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:12:37,047 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:12:37,151 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:12:38,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:41,219 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:12:41,426 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:41,532 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:41,639 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:41,744 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:41,861 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:41,973 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:12:42,090 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:42,208 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:12:42,329 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:12:42,438 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:12:42,558 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:12:42,661 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:12:43,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:46,973 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:47,076 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:12:47,183 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:47,294 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:12:47,501 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:12:47,603 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-10 03:12:48,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:51,663 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:12:51,785 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 03:12:52,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:56,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:12:59,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:02,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:04,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:06,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:07,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:08,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:09,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:10,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:10,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:10,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:11,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:11,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:11,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:11,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2019-09-10 03:13:11,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:13:11,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 47] total 49 [2019-09-10 03:13:11,457 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:13:11,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-10 03:13:11,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-10 03:13:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=1750, Unknown=0, NotChecked=0, Total=2352 [2019-09-10 03:13:11,458 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 26 states. [2019-09-10 03:13:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:13:11,901 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2019-09-10 03:13:11,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-10 03:13:11,903 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 139 [2019-09-10 03:13:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:13:11,905 INFO L225 Difference]: With dead ends: 102 [2019-09-10 03:13:11,905 INFO L226 Difference]: Without dead ends: 96 [2019-09-10 03:13:11,906 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 233 SyntacticMatches, 44 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1636, Invalid=3334, Unknown=0, NotChecked=0, Total=4970 [2019-09-10 03:13:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-09-10 03:13:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2019-09-10 03:13:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-09-10 03:13:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2019-09-10 03:13:11,910 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 139 [2019-09-10 03:13:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:13:11,910 INFO L475 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2019-09-10 03:13:11,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-10 03:13:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2019-09-10 03:13:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-10 03:13:11,911 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:13:11,911 INFO L399 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:13:11,912 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:13:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:13:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1155535485, now seen corresponding path program 22 times [2019-09-10 03:13:11,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:13:11,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:13:11,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:13:11,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:13:11,913 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:13:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:13:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2019-09-10 03:13:12,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:13:12,407 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:13:12,408 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:13:12,408 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:13:12,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:13:12,408 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 03:13:12,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:13:12,422 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:13:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:13:12,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 48 conjunts are in the unsatisfiable core [2019-09-10 03:13:12,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:13:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2019-09-10 03:13:12,502 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:13:15,447 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:15,551 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:15,668 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:15,777 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:15,892 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:16,003 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:16,118 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:16,232 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:16,356 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:16,480 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:16,614 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:16,738 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:16,869 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:16,997 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:17,136 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:17,276 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:17,421 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:13:17,566 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:13:17,707 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:13:17,855 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:13:18,016 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:13:18,169 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:13:18,331 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:13:18,497 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:13:18,666 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:13:18,822 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:13:18,991 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:13:19,164 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:13:19,338 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-09-10 03:13:19,511 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-09-10 03:13:19,671 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-09-10 03:13:19,815 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-09-10 03:13:19,962 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-10 03:13:20,100 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-09-10 03:13:20,235 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-09-10 03:13:20,364 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-10 03:13:20,487 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:13:20,618 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:13:20,736 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:13:20,850 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:13:20,953 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:13:25,114 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:13:25,318 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:25,430 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:25,538 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:25,648 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:25,763 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:25,877 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:25,994 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:26,109 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:26,242 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:26,367 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:26,495 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:26,622 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:26,757 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:26,890 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:27,036 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:27,172 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:27,317 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:13:27,454 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:13:27,610 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:13:27,769 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:13:27,927 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:13:28,081 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:13:28,237 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:13:28,402 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:13:28,571 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-09-10 03:13:28,720 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-09-10 03:13:28,871 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-09-10 03:13:29,008 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-09-10 03:13:29,139 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-09-10 03:13:29,268 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-09-10 03:13:29,399 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-10 03:13:29,522 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:13:29,640 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-09-10 03:13:29,749 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:13:29,856 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-09-10 03:13:29,959 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 03:13:31,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:34,045 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:13:34,149 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:13:34,262 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:34,368 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:34,478 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:34,587 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:34,703 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:34,818 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:34,934 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:35,051 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:35,175 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:35,294 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:35,423 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:35,551 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:35,683 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:35,818 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:35,958 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:36,091 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:36,243 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:13:36,381 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:13:36,534 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:13:36,676 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:13:36,826 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-09-10 03:13:36,965 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-09-10 03:13:37,094 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-09-10 03:13:37,226 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-09-10 03:13:37,346 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-10 03:13:37,466 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-09-10 03:13:37,582 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-09-10 03:13:37,692 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:13:37,800 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:13:37,904 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:13:39,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:42,113 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:13:42,220 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:42,326 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:42,433 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:42,543 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:42,661 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:42,774 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:42,895 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:43,005 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:43,131 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:43,255 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:43,388 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:43,516 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:43,654 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:43,788 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:13:43,930 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:44,072 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:13:44,207 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-09-10 03:13:44,334 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-09-10 03:13:44,460 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-10 03:13:44,583 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-10 03:13:44,699 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:13:44,813 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:13:44,922 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:13:45,024 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:13:46,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:49,216 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:13:49,323 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:49,424 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:49,536 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:49,643 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:49,756 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:49,875 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:49,991 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:50,106 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:50,226 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:50,350 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:13:50,482 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:50,607 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:13:50,737 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-10 03:13:50,856 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-10 03:13:50,969 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:13:51,078 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:13:51,183 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:13:52,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:13:55,565 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:55,673 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:13:55,781 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:55,891 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:13:56,006 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:56,114 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:13:56,230 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:56,355 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:13:56,474 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:13:56,586 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:13:56,691 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:13:56,796 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:13:58,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:01,054 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:01,156 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:01,266 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:01,375 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:01,488 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:14:01,691 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-10 03:14:02,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:05,673 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:14:07,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:10,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:13,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:16,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:18,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:20,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:21,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:22,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:23,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:24,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:24,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:24,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:25,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:25,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:25,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:25,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:14:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-09-10 03:14:25,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:14:25,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 49] total 51 [2019-09-10 03:14:25,506 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:14:25,508 INFO L454 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-09-10 03:14:25,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-09-10 03:14:25,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=1898, Unknown=0, NotChecked=0, Total=2550 [2019-09-10 03:14:25,508 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 27 states. [2019-09-10 03:14:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:14:25,968 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2019-09-10 03:14:25,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-10 03:14:25,968 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 145 [2019-09-10 03:14:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:14:25,970 INFO L225 Difference]: With dead ends: 105 [2019-09-10 03:14:25,970 INFO L226 Difference]: Without dead ends: 99 [2019-09-10 03:14:25,971 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 243 SyntacticMatches, 46 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1779, Invalid=3623, Unknown=0, NotChecked=0, Total=5402 [2019-09-10 03:14:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-09-10 03:14:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2019-09-10 03:14:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-09-10 03:14:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2019-09-10 03:14:25,975 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 145 [2019-09-10 03:14:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:14:25,976 INFO L475 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2019-09-10 03:14:25,976 INFO L476 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-09-10 03:14:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2019-09-10 03:14:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-10 03:14:25,977 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:14:25,977 INFO L399 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:14:25,977 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:14:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:14:25,978 INFO L82 PathProgramCache]: Analyzing trace with hash 478692079, now seen corresponding path program 23 times [2019-09-10 03:14:25,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:14:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:14:25,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 03:14:25,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:14:25,979 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:14:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:14:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-09-10 03:14:26,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:14:26,435 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:14:26,435 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:14:26,436 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:14:26,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:14:26,436 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 03:14:26,458 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 03:14:26,459 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:14:26,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2019-09-10 03:14:26,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:14:26,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjunts are in the unsatisfiable core [2019-09-10 03:14:26,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:14:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-09-10 03:14:27,825 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:14:30,781 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:14:30,885 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:30,989 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:31,102 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:31,212 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:31,328 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:31,443 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:31,560 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:31,684 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:31,806 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:31,927 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:32,062 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:32,183 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:32,322 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:32,454 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:32,595 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:32,738 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:32,878 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:33,024 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:33,178 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:14:33,326 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:14:33,484 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:14:33,647 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:14:33,810 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:14:33,971 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:14:34,147 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:14:34,312 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:14:34,498 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:14:34,669 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:14:34,852 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:14:35,028 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:14:37,882 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:14:38,092 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:38,198 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:38,312 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:38,420 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:38,529 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:38,643 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:38,766 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:38,890 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:39,017 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:39,139 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:39,264 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:39,392 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:39,527 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:39,665 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:39,805 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:39,942 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:40,083 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:40,225 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:40,380 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:14:40,528 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:14:40,691 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:14:40,847 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:14:41,010 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:14:41,175 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:14:41,346 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:14:41,510 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:14:44,385 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:14:44,592 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:44,694 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:44,807 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:44,920 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:45,025 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:45,134 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:45,256 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:45,380 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:45,510 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:45,636 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:45,770 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:45,900 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:46,032 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:46,168 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:46,305 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:46,445 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:46,586 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:46,735 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:46,888 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:14:47,040 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:14:47,201 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:14:47,361 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:14:50,234 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:14:50,442 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:50,544 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:50,658 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:50,765 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:50,884 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:51,000 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:51,127 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:51,245 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:51,367 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:51,490 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:51,623 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:51,749 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:51,891 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:52,017 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:52,159 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:52,295 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:14:52,444 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:52,587 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:14:55,460 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:14:55,664 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:55,769 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:14:55,877 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:55,989 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:14:56,107 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:56,227 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:14:56,344 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:56,466 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:14:56,592 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:56,712 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:14:56,841 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:56,967 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:14:57,109 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:14:57,238 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:00,206 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:15:00,517 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:00,627 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:00,744 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:01,265 WARN L188 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:01,387 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:01,506 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:01,628 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:01,753 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:04,498 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:15:04,805 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:04,909 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:05,017 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:05,124 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:05,237 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:05,354 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:08,188 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:15:08,393 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:08,496 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-09-10 03:15:23,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:15:23,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 51, 51] total 81 [2019-09-10 03:15:23,706 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:15:23,707 INFO L454 AbstractCegarLoop]: Interpolant automaton has 77 states [2019-09-10 03:15:23,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2019-09-10 03:15:23,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=5467, Unknown=0, NotChecked=0, Total=6480 [2019-09-10 03:15:23,708 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 77 states. [2019-09-10 03:15:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:15:25,528 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2019-09-10 03:15:25,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-10 03:15:25,528 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2019-09-10 03:15:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:15:25,529 INFO L225 Difference]: With dead ends: 108 [2019-09-10 03:15:25,529 INFO L226 Difference]: Without dead ends: 102 [2019-09-10 03:15:25,531 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 228 SyntacticMatches, 45 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5658 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2882, Invalid=13374, Unknown=0, NotChecked=0, Total=16256 [2019-09-10 03:15:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-09-10 03:15:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2019-09-10 03:15:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-09-10 03:15:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2019-09-10 03:15:25,536 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 151 [2019-09-10 03:15:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:15:25,536 INFO L475 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2019-09-10 03:15:25,536 INFO L476 AbstractCegarLoop]: Interpolant automaton has 77 states. [2019-09-10 03:15:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2019-09-10 03:15:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-10 03:15:25,537 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:15:25,538 INFO L399 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:15:25,538 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:15:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:15:25,538 INFO L82 PathProgramCache]: Analyzing trace with hash -414572547, now seen corresponding path program 24 times [2019-09-10 03:15:25,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:15:25,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:15:25,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:15:25,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:15:25,539 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:15:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 03:15:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2019-09-10 03:15:26,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:15:26,268 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 03:15:26,268 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 03:15:26,268 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 03:15:26,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 03:15:26,269 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 03:15:26,279 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-10 03:15:26,279 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2019-09-10 03:15:26,332 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-10 03:15:26,332 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 03:15:26,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 52 conjunts are in the unsatisfiable core [2019-09-10 03:15:26,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 03:15:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2019-09-10 03:15:26,398 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 03:15:29,080 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 03:15:29,282 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:15:29,391 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:29,601 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:29,710 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:29,825 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:29,939 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:30,059 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:30,174 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:30,298 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:30,433 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:30,564 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:15:30,689 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:15:30,822 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:30,952 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:31,087 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:15:31,224 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:15:31,371 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:15:31,515 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:15:31,658 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:15:31,817 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:15:31,974 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:15:32,132 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:15:32,288 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:32,449 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:32,612 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:15:32,773 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:15:32,946 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:33,130 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:33,314 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:15:33,491 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:15:33,679 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:15:33,863 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:15:34,056 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:15:34,249 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:15:34,483 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-09-10 03:15:34,674 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-09-10 03:15:34,868 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2019-09-10 03:15:35,053 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2019-09-10 03:15:35,235 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-09-10 03:15:35,412 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-09-10 03:15:35,580 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-09-10 03:15:35,739 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-09-10 03:15:35,903 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-09-10 03:15:36,059 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-09-10 03:15:36,205 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-09-10 03:15:36,350 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-09-10 03:15:36,491 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-09-10 03:15:36,630 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-10 03:15:36,759 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:15:36,884 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:15:37,002 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:15:37,117 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-09-10 03:15:37,225 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:37,329 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-09-10 03:15:37,530 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2019-09-10 03:15:41,605 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:41,815 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:41,923 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:42,036 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:42,143 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:42,263 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:42,392 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:42,521 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:42,641 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:42,775 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:15:42,898 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:15:43,032 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:43,162 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:43,297 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:15:43,435 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:15:43,582 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:15:43,723 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:15:43,876 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:15:44,034 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:15:44,189 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:15:44,342 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:15:44,499 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:44,655 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:44,824 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:15:44,987 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:15:45,155 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:45,324 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:45,501 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:15:45,685 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 03:15:45,873 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:15:46,055 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:15:46,232 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-09-10 03:15:46,407 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-09-10 03:15:46,570 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-09-10 03:15:46,723 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-09-10 03:15:46,875 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-09-10 03:15:47,023 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-09-10 03:15:47,167 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2019-09-10 03:15:47,319 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-09-10 03:15:47,450 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-09-10 03:15:47,582 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-09-10 03:15:47,706 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-10 03:15:47,829 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:15:47,945 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-09-10 03:15:48,061 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:15:48,169 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:48,271 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:15:49,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:15:52,559 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:52,662 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:15:52,781 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:52,891 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:15:53,009 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:53,121 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:15:53,238 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:53,359 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:15:53,485 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:53,606 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:15:53,732 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:15:53,858 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:15:53,994 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:54,129 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:15:54,269 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:15:54,407 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:15:54,555 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:15:54,702 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:15:54,851 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:15:54,999 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:15:55,155 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:15:55,312 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:15:55,469 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:55,623 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:15:55,792 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:15:55,959 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-09-10 03:15:56,134 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:56,305 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:56,489 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-09-10 03:15:56,657 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-09-10 03:15:56,813 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-09-10 03:15:56,964 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-09-10 03:15:57,110 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-09-10 03:15:57,253 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-09-10 03:15:57,395 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-09-10 03:15:57,521 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-09-10 03:15:57,645 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2019-09-10 03:15:57,765 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:15:57,884 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:15:57,996 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:15:58,105 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:15:58,207 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-09-10 03:15:58,313 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-09-10 03:15:59,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:02,406 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:16:02,512 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:02,724 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:02,834 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:02,948 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:03,059 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:03,175 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:03,294 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:03,417 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:03,538 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:03,669 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:03,794 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:03,927 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:16:04,059 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:16:04,200 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:16:04,340 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:16:04,485 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:16:04,625 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:16:04,783 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:16:04,930 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:16:05,091 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:16:05,240 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-09-10 03:16:05,399 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:16:05,557 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:16:05,709 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-09-10 03:16:05,856 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-09-10 03:16:05,998 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-09-10 03:16:06,136 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-09-10 03:16:06,281 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-09-10 03:16:06,413 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-09-10 03:16:06,541 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-10 03:16:06,662 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:16:06,780 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:16:06,885 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:16:06,988 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:16:08,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:11,376 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:11,481 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:11,593 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:11,699 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:11,818 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:11,933 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:12,051 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:12,166 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:12,287 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:12,410 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:12,536 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:12,673 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:12,811 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:16:12,948 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:16:13,085 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:16:13,220 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:16:13,369 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:16:13,512 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-10 03:16:13,659 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:16:13,799 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-09-10 03:16:13,948 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-09-10 03:16:14,084 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-09-10 03:16:14,218 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2019-09-10 03:16:14,348 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2019-09-10 03:16:14,471 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-09-10 03:16:14,591 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-09-10 03:16:14,717 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-09-10 03:16:14,828 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:16:14,934 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-09-10 03:16:16,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:19,302 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:19,409 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:19,519 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:19,627 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:19,744 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:19,856 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:19,976 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:20,090 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:20,217 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:20,341 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:20,467 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:20,590 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:20,721 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:16:20,849 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-10 03:16:20,988 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:16:21,123 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-09-10 03:16:21,263 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-09-10 03:16:21,401 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2019-09-10 03:16:21,528 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-09-10 03:16:21,647 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-09-10 03:16:21,764 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-09-10 03:16:21,873 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:16:21,979 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:16:22,083 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:16:23,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:26,181 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:16:26,386 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:26,491 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:26,603 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:26,716 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:26,832 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:26,948 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:27,071 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:27,185 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:27,310 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:27,433 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-10 03:16:27,564 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:27,690 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 03:16:27,821 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-09-10 03:16:27,942 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-09-10 03:16:28,060 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-09-10 03:16:28,171 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-09-10 03:16:28,278 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2019-09-10 03:16:28,381 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-10 03:16:28,491 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-09-10 03:16:29,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:32,640 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:16:32,748 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:32,851 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:32,962 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:33,069 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:33,190 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:33,301 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-10 03:16:33,428 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:33,556 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-10 03:16:33,677 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-10 03:16:33,786 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-09-10 03:16:33,892 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 03:16:33,995 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-09-10 03:16:35,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:37,199 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2019-09-10 03:16:38,285 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:38,391 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-09-10 03:16:38,502 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:38,618 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-09-10 03:16:38,728 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 03:16:40,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:42,871 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-10 03:16:44,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:47,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:50,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:53,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:55,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:57,309 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:58,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:16:59,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:00,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:01,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:01,770 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:02,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:02,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:02,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:02,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:02,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 03:17:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-09-10 03:17:02,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 03:17:02,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 53] total 54 [2019-09-10 03:17:02,616 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 03:17:02,616 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-09-10 03:17:02,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-09-10 03:17:02,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2019-09-10 03:17:02,617 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 29 states. [2019-09-10 03:17:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 03:17:03,145 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2019-09-10 03:17:03,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-10 03:17:03,146 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 157 [2019-09-10 03:17:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 03:17:03,147 INFO L225 Difference]: With dead ends: 111 [2019-09-10 03:17:03,148 INFO L226 Difference]: Without dead ends: 105 [2019-09-10 03:17:03,149 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 263 SyntacticMatches, 51 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2080, Invalid=4082, Unknown=0, NotChecked=0, Total=6162 [2019-09-10 03:17:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-09-10 03:17:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2019-09-10 03:17:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-09-10 03:17:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2019-09-10 03:17:03,153 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 157 [2019-09-10 03:17:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 03:17:03,154 INFO L475 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2019-09-10 03:17:03,154 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-09-10 03:17:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2019-09-10 03:17:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-09-10 03:17:03,155 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 03:17:03,155 INFO L399 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 03:17:03,155 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 03:17:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 03:17:03,156 INFO L82 PathProgramCache]: Analyzing trace with hash -975000849, now seen corresponding path program 25 times [2019-09-10 03:17:03,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 03:17:03,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:17:03,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 03:17:03,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 03:17:03,157 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 03:17:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 03:17:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 03:17:03,248 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 03:17:03,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 03:17:03 BoogieIcfgContainer [2019-09-10 03:17:03,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 03:17:03,314 INFO L168 Benchmark]: Toolchain (without parser) took 601630.01 ms. Allocated memory was 135.8 MB in the beginning and 697.3 MB in the end (delta: 561.5 MB). Free memory was 91.8 MB in the beginning and 572.8 MB in the end (delta: -481.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2019-09-10 03:17:03,314 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory is still 109.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 03:17:03,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.24 ms. Allocated memory is still 135.8 MB. Free memory was 91.3 MB in the beginning and 82.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-09-10 03:17:03,314 INFO L168 Benchmark]: Boogie Preprocessor took 115.78 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 82.6 MB in the beginning and 178.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-10 03:17:03,315 INFO L168 Benchmark]: RCFGBuilder took 213.01 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 167.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-10 03:17:03,315 INFO L168 Benchmark]: TraceAbstraction took 601045.08 ms. Allocated memory was 201.3 MB in the beginning and 697.3 MB in the end (delta: 496.0 MB). Free memory was 167.5 MB in the beginning and 572.8 MB in the end (delta: -405.3 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. [2019-09-10 03:17:03,316 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory is still 109.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.24 ms. Allocated memory is still 135.8 MB. Free memory was 91.3 MB in the beginning and 82.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.78 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 82.6 MB in the beginning and 178.8 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 213.01 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 167.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 601045.08 ms. Allocated memory was 201.3 MB in the beginning and 697.3 MB in the end (delta: 496.0 MB). Free memory was 167.5 MB in the beginning and 572.8 MB in the end (delta: -405.3 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 25; VAL [input=25] [L11] CALL, EXPR id(input) VAL [\old(x)=25] [L5] COND FALSE !(x==0) VAL [\old(x)=25, x=25] [L6] CALL, EXPR id(x-1) VAL [\old(x)=24] [L5] COND FALSE !(x==0) VAL [\old(x)=24, x=24] [L6] CALL, EXPR id(x-1) VAL [\old(x)=23] [L5] COND FALSE !(x==0) VAL [\old(x)=23, x=23] [L6] CALL, EXPR id(x-1) VAL [\old(x)=22] [L5] COND FALSE !(x==0) VAL [\old(x)=22, x=22] [L6] CALL, EXPR id(x-1) VAL [\old(x)=21] [L5] COND FALSE !(x==0) VAL [\old(x)=21, x=21] [L6] CALL, EXPR id(x-1) VAL [\old(x)=20] [L5] COND FALSE !(x==0) VAL [\old(x)=20, x=20] [L6] CALL, EXPR id(x-1) VAL [\old(x)=19] [L5] COND FALSE !(x==0) VAL [\old(x)=19, x=19] [L6] CALL, EXPR id(x-1) VAL [\old(x)=18] [L5] COND FALSE !(x==0) VAL [\old(x)=18, x=18] [L6] CALL, EXPR id(x-1) VAL [\old(x)=17] [L5] COND FALSE !(x==0) VAL [\old(x)=17, x=17] [L6] CALL, EXPR id(x-1) VAL [\old(x)=16] [L5] COND FALSE !(x==0) VAL [\old(x)=16, x=16] [L6] CALL, EXPR id(x-1) VAL [\old(x)=15] [L5] COND FALSE !(x==0) VAL [\old(x)=15, x=15] [L6] CALL, EXPR id(x-1) VAL [\old(x)=14] [L5] COND FALSE !(x==0) VAL [\old(x)=14, x=14] [L6] CALL, EXPR id(x-1) VAL [\old(x)=13] [L5] COND FALSE !(x==0) VAL [\old(x)=13, x=13] [L6] CALL, EXPR id(x-1) VAL [\old(x)=12] [L5] COND FALSE !(x==0) VAL [\old(x)=12, x=12] [L6] CALL, EXPR id(x-1) VAL [\old(x)=11] [L5] COND FALSE !(x==0) VAL [\old(x)=11, x=11] [L6] CALL, EXPR id(x-1) VAL [\old(x)=10] [L5] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L6] CALL, EXPR id(x-1) VAL [\old(x)=9] [L5] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L6] CALL, EXPR id(x-1) VAL [\old(x)=8] [L5] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L6] CALL, EXPR id(x-1) VAL [\old(x)=7] [L5] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L6] CALL, EXPR id(x-1) VAL [\old(x)=6] [L5] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L6] CALL, EXPR id(x-1) VAL [\old(x)=5] [L5] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L6] CALL, EXPR id(x-1) VAL [\old(x)=4] [L5] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L6] CALL, EXPR id(x-1) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=11, id(x-1)=10, x=11] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=12, id(x-1)=11, x=12] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=13, id(x-1)=12, x=13] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=14, id(x-1)=13, x=14] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=15, id(x-1)=14, x=15] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=16, id(x-1)=15, x=16] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=17, id(x-1)=16, x=17] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=18, id(x-1)=17, x=18] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=19, id(x-1)=18, x=19] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=20, id(x-1)=19, x=20] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=21, id(x-1)=20, x=21] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=22, id(x-1)=21, x=22] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=23, id(x-1)=22, x=23] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=24, id(x-1)=23, x=24] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=25, id(x-1)=24, x=25] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) VAL [id(input)=25, input=25] [L11] int result = id(input); [L12] COND TRUE result == 25 VAL [input=25, result=25] [L13] __VERIFIER_error() VAL [input=25, result=25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 600.9s OverallTime, 26 OverallIterations, 26 TraceHistogramMax, 9.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 332 SDtfs, 734 SDslu, 3698 SDs, 0 SdLazy, 2302 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5275 GetRequests, 3472 SyntacticMatches, 615 SemanticMatches, 1188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24116 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.6944444444444444 AbsIntWeakeningRatio, 0.5555555555555556 AbsIntAvgWeakeningVarsNumRemoved, 0.16666666666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 209 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 588.5s InterpolantComputationTime, 4381 NumberOfCodeBlocks, 4381 NumberOfCodeBlocksAsserted, 157 NumberOfCheckSat, 6240 ConstructedInterpolants, 0 QuantifiedInterpolants, 1873872 SizeOfPredicates, 291 NumberOfNonLiveVariables, 4922 ConjunctsInSsa, 690 ConjunctsInUnsatCore, 71 InterpolantComputations, 1 PerfectInterpolantSequences, 18590/44992 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...