java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:53:02,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:53:02,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:53:02,701 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:53:02,701 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:53:02,702 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:53:02,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:53:02,706 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:53:02,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:53:02,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:53:02,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:53:02,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:53:02,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:53:02,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:53:02,716 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:53:02,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:53:02,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:53:02,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:53:02,729 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:53:02,731 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:53:02,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:53:02,736 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:53:02,739 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:53:02,751 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:53:02,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:53:02,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:53:02,783 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:53:02,783 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:53:02,784 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:53:02,784 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:53:02,785 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:53:02,785 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:53:02,785 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:53:02,785 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:53:02,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:53:02,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:53:02,786 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:53:02,786 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:53:02,786 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:53:02,786 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:53:02,786 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:53:02,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:53:02,788 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:53:02,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:53:02,788 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:53:02,788 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:53:02,789 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:53:02,789 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:53:02,789 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:53:02,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:53:02,790 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:53:02,790 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:53:02,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:53:02,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:53:02,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:53:02,856 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:53:02,856 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:53:02,857 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-11-06 22:53:02,923 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87be1f75d/15eb9f6be1e34946b2fb7a12e828b896/FLAG834b64f93 [2018-11-06 22:53:03,338 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:53:03,339 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call_true-termination.i [2018-11-06 22:53:03,344 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87be1f75d/15eb9f6be1e34946b2fb7a12e828b896/FLAG834b64f93 [2018-11-06 22:53:03,359 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87be1f75d/15eb9f6be1e34946b2fb7a12e828b896 [2018-11-06 22:53:03,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:53:03,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:53:03,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:53:03,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:53:03,375 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:53:03,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35712bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03, skipping insertion in model container [2018-11-06 22:53:03,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:53:03,410 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:53:03,607 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:53:03,612 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:53:03,632 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:53:03,652 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:53:03,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03 WrapperNode [2018-11-06 22:53:03,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:53:03,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:53:03,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:53:03,654 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:53:03,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:53:03,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:53:03,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:53:03,696 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:53:03,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... [2018-11-06 22:53:03,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:53:03,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:53:03,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:53:03,721 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:53:03,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:53:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:53:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:53:04,050 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:53:04,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:04 BoogieIcfgContainer [2018-11-06 22:53:04,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:53:04,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:53:04,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:53:04,056 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:53:04,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:03" (1/3) ... [2018-11-06 22:53:04,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618b1c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:04, skipping insertion in model container [2018-11-06 22:53:04,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:03" (2/3) ... [2018-11-06 22:53:04,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618b1c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:04, skipping insertion in model container [2018-11-06 22:53:04,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:04" (3/3) ... [2018-11-06 22:53:04,059 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call_true-termination.i [2018-11-06 22:53:04,068 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:53:04,075 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:53:04,092 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:53:04,125 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:53:04,125 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:53:04,126 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:53:04,126 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:53:04,126 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:53:04,126 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:53:04,126 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:53:04,127 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:53:04,127 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:53:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-06 22:53:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:53:04,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:04,148 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:04,150 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:04,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1807151048, now seen corresponding path program 1 times [2018-11-06 22:53:04,159 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:04,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:04,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:04,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:04,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:04,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:53:04,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:53:04,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:53:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:53:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:53:04,297 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-11-06 22:53:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:04,314 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-11-06 22:53:04,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:53:04,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-11-06 22:53:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:04,326 INFO L225 Difference]: With dead ends: 22 [2018-11-06 22:53:04,327 INFO L226 Difference]: Without dead ends: 10 [2018-11-06 22:53:04,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:53:04,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-11-06 22:53:04,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-06 22:53:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-06 22:53:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-11-06 22:53:04,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-11-06 22:53:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:04,369 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-11-06 22:53:04,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:53:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-11-06 22:53:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-06 22:53:04,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:04,370 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:04,370 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:04,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 178554705, now seen corresponding path program 1 times [2018-11-06 22:53:04,371 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:04,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:04,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:04,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:04,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:04,381 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:04,381 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:04,382 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:04,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:04,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:04,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:53:04,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:53:04,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:53:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:53:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:53:04,589 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-11-06 22:53:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:04,698 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-06 22:53:04,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:53:04,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-06 22:53:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:04,699 INFO L225 Difference]: With dead ends: 17 [2018-11-06 22:53:04,699 INFO L226 Difference]: Without dead ends: 13 [2018-11-06 22:53:04,701 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:53:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-06 22:53:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-06 22:53:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-06 22:53:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-06 22:53:04,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2018-11-06 22:53:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:04,705 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-06 22:53:04,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:53:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-06 22:53:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-06 22:53:04,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:04,709 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:04,710 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:04,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:04,710 INFO L82 PathProgramCache]: Analyzing trace with hash -494066964, now seen corresponding path program 1 times [2018-11-06 22:53:04,711 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:04,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:04,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:04,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:04,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:04,738 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:04,738 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:04,738 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:04,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:04,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:05,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:05,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-06 22:53:05,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:53:05,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:53:05,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:53:05,168 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-11-06 22:53:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:05,601 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-06 22:53:05,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:53:05,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-11-06 22:53:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:05,603 INFO L225 Difference]: With dead ends: 19 [2018-11-06 22:53:05,603 INFO L226 Difference]: Without dead ends: 15 [2018-11-06 22:53:05,604 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:53:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-06 22:53:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-06 22:53:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-06 22:53:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-06 22:53:05,608 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-11-06 22:53:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:05,608 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-06 22:53:05,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:53:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-06 22:53:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-06 22:53:05,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:05,609 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:05,610 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:05,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1751194993, now seen corresponding path program 2 times [2018-11-06 22:53:05,610 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:05,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:05,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:05,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:05,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:05,619 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:05,620 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:05,620 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:05,645 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:53:05,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:53:05,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:05,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:05,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:05,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-06 22:53:05,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 22:53:05,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 22:53:05,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:53:05,956 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-11-06 22:53:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:06,161 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-06 22:53:06,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 22:53:06,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-11-06 22:53:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:06,163 INFO L225 Difference]: With dead ends: 22 [2018-11-06 22:53:06,164 INFO L226 Difference]: Without dead ends: 18 [2018-11-06 22:53:06,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:53:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-06 22:53:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-06 22:53:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-06 22:53:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-06 22:53:06,170 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-11-06 22:53:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:06,171 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-06 22:53:06,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 22:53:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-06 22:53:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-06 22:53:06,172 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:06,172 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:06,172 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:06,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash 529488076, now seen corresponding path program 3 times [2018-11-06 22:53:06,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:06,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:06,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:06,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:06,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:06,183 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:06,183 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:06,183 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:06,192 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:53:06,202 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-06 22:53:06,202 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:06,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:06,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:06,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-06 22:53:06,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 22:53:06,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 22:53:06,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:53:06,777 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2018-11-06 22:53:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:06,964 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-06 22:53:06,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 22:53:06,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-11-06 22:53:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:06,969 INFO L225 Difference]: With dead ends: 25 [2018-11-06 22:53:06,969 INFO L226 Difference]: Without dead ends: 21 [2018-11-06 22:53:06,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:53:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-06 22:53:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-06 22:53:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-06 22:53:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-06 22:53:06,975 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-11-06 22:53:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:06,975 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-06 22:53:06,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 22:53:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-06 22:53:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-06 22:53:06,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:06,976 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:06,976 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:06,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash 211590033, now seen corresponding path program 4 times [2018-11-06 22:53:06,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:06,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:06,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:06,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:06,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:06,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:06,988 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:06,988 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:07,024 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:53:07,071 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:53:07,071 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:07,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:07,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:07,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-06 22:53:07,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 22:53:07,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 22:53:07,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:53:07,375 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2018-11-06 22:53:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:07,676 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-06 22:53:07,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 22:53:07,676 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-11-06 22:53:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:07,677 INFO L225 Difference]: With dead ends: 28 [2018-11-06 22:53:07,678 INFO L226 Difference]: Without dead ends: 24 [2018-11-06 22:53:07,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:53:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-06 22:53:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-06 22:53:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-06 22:53:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-06 22:53:07,684 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-11-06 22:53:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:07,684 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-06 22:53:07,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 22:53:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-06 22:53:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-06 22:53:07,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:07,685 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:07,686 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:07,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:07,686 INFO L82 PathProgramCache]: Analyzing trace with hash 113878700, now seen corresponding path program 5 times [2018-11-06 22:53:07,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:07,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:07,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:07,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:07,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:07,698 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:07,699 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:07,699 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:07,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:53:07,730 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-06 22:53:07,731 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:07,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:08,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:08,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-11-06 22:53:08,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 22:53:08,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 22:53:08,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:53:08,008 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 15 states. [2018-11-06 22:53:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:08,259 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-06 22:53:08,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 22:53:08,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2018-11-06 22:53:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:08,261 INFO L225 Difference]: With dead ends: 31 [2018-11-06 22:53:08,262 INFO L226 Difference]: Without dead ends: 27 [2018-11-06 22:53:08,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:53:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-06 22:53:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-06 22:53:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-06 22:53:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-06 22:53:08,267 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2018-11-06 22:53:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:08,268 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-06 22:53:08,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-06 22:53:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-06 22:53:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-06 22:53:08,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:08,269 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:08,269 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:08,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:08,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1183383985, now seen corresponding path program 6 times [2018-11-06 22:53:08,270 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:08,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:08,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:08,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:08,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:08,283 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:08,284 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:08,284 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:08,294 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:53:08,310 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-06 22:53:08,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:08,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:08,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:08,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-11-06 22:53:08,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-06 22:53:08,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-06 22:53:08,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:53:08,740 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 17 states. [2018-11-06 22:53:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:09,270 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-06 22:53:09,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 22:53:09,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2018-11-06 22:53:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:09,272 INFO L225 Difference]: With dead ends: 34 [2018-11-06 22:53:09,272 INFO L226 Difference]: Without dead ends: 30 [2018-11-06 22:53:09,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-11-06 22:53:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-06 22:53:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-06 22:53:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-06 22:53:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-06 22:53:09,278 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2018-11-06 22:53:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:09,278 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-06 22:53:09,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-06 22:53:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-06 22:53:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-06 22:53:09,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:09,280 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:09,280 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:09,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:09,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1547039604, now seen corresponding path program 7 times [2018-11-06 22:53:09,280 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:09,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:09,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:09,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:09,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:09,299 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:09,299 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:09,299 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:09,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:09,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:09,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:09,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-11-06 22:53:09,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-06 22:53:09,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-06 22:53:09,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2018-11-06 22:53:09,707 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 19 states. [2018-11-06 22:53:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:10,029 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-06 22:53:10,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 22:53:10,030 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 29 [2018-11-06 22:53:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:10,032 INFO L225 Difference]: With dead ends: 37 [2018-11-06 22:53:10,032 INFO L226 Difference]: Without dead ends: 33 [2018-11-06 22:53:10,033 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2018-11-06 22:53:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-06 22:53:10,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-06 22:53:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-06 22:53:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-11-06 22:53:10,038 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2018-11-06 22:53:10,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:10,038 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-11-06 22:53:10,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-06 22:53:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-06 22:53:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-06 22:53:10,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:10,040 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:10,040 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:10,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:10,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1210560559, now seen corresponding path program 8 times [2018-11-06 22:53:10,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:10,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:10,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:10,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:10,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:10,050 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:10,051 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:10,051 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:10,063 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:53:10,077 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:53:10,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:10,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:10,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:10,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-11-06 22:53:10,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-06 22:53:10,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-06 22:53:10,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2018-11-06 22:53:10,625 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 21 states. [2018-11-06 22:53:11,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:11,082 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-06 22:53:11,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-06 22:53:11,082 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 32 [2018-11-06 22:53:11,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:11,083 INFO L225 Difference]: With dead ends: 40 [2018-11-06 22:53:11,083 INFO L226 Difference]: Without dead ends: 36 [2018-11-06 22:53:11,084 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2018-11-06 22:53:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-06 22:53:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-06 22:53:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-06 22:53:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-06 22:53:11,090 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 32 [2018-11-06 22:53:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:11,090 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-06 22:53:11,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-06 22:53:11,090 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-06 22:53:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-06 22:53:11,091 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:11,091 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:11,092 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:11,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:11,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1616999828, now seen corresponding path program 9 times [2018-11-06 22:53:11,092 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:11,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:11,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:11,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:11,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:11,103 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:11,103 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:11,103 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:11,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:53:11,141 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-06 22:53:11,141 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:11,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:11,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:11,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-11-06 22:53:11,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-06 22:53:11,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-06 22:53:11,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-11-06 22:53:11,805 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 23 states. [2018-11-06 22:53:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:12,203 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-06 22:53:12,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-06 22:53:12,203 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-11-06 22:53:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:12,204 INFO L225 Difference]: With dead ends: 43 [2018-11-06 22:53:12,205 INFO L226 Difference]: Without dead ends: 39 [2018-11-06 22:53:12,206 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2018-11-06 22:53:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-06 22:53:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-06 22:53:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-06 22:53:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-11-06 22:53:12,210 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 35 [2018-11-06 22:53:12,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:12,211 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-11-06 22:53:12,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-06 22:53:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-06 22:53:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-06 22:53:12,212 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:12,212 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:12,212 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:12,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:12,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1958512113, now seen corresponding path program 10 times [2018-11-06 22:53:12,213 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:12,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:12,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:12,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:12,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:12,223 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:12,224 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:12,224 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:12,232 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:53:12,246 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:53:12,247 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:12,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:12,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:12,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-11-06 22:53:12,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-06 22:53:12,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-06 22:53:12,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2018-11-06 22:53:12,960 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 25 states. [2018-11-06 22:53:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:13,484 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-06 22:53:13,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-06 22:53:13,484 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 38 [2018-11-06 22:53:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:13,486 INFO L225 Difference]: With dead ends: 46 [2018-11-06 22:53:13,486 INFO L226 Difference]: Without dead ends: 42 [2018-11-06 22:53:13,487 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2018-11-06 22:53:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-06 22:53:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-06 22:53:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-06 22:53:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-11-06 22:53:13,493 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 38 [2018-11-06 22:53:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:13,493 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-11-06 22:53:13,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-06 22:53:13,494 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-06 22:53:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-06 22:53:13,494 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:13,494 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:13,495 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:13,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:13,495 INFO L82 PathProgramCache]: Analyzing trace with hash 550838348, now seen corresponding path program 11 times [2018-11-06 22:53:13,495 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:13,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:13,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:13,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:13,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:13,506 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:13,507 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:13,507 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:13,525 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:53:13,548 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-06 22:53:13,548 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:13,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:14,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:14,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-11-06 22:53:14,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-06 22:53:14,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-06 22:53:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2018-11-06 22:53:14,114 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 27 states. [2018-11-06 22:53:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:15,197 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-11-06 22:53:15,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-06 22:53:15,198 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 41 [2018-11-06 22:53:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:15,199 INFO L225 Difference]: With dead ends: 49 [2018-11-06 22:53:15,199 INFO L226 Difference]: Without dead ends: 45 [2018-11-06 22:53:15,199 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2018-11-06 22:53:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-06 22:53:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-06 22:53:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-06 22:53:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-11-06 22:53:15,204 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 41 [2018-11-06 22:53:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:15,204 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-11-06 22:53:15,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-06 22:53:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-11-06 22:53:15,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-06 22:53:15,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:15,205 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:15,206 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:15,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 602383377, now seen corresponding path program 12 times [2018-11-06 22:53:15,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:15,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:15,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:15,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:15,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:15,217 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:15,217 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:15,218 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:15,235 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:53:15,263 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-06 22:53:15,263 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:15,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:15,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:15,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-11-06 22:53:15,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-06 22:53:15,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-06 22:53:15,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2018-11-06 22:53:15,796 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 29 states. [2018-11-06 22:53:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:16,412 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-11-06 22:53:16,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-06 22:53:16,413 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2018-11-06 22:53:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:16,414 INFO L225 Difference]: With dead ends: 52 [2018-11-06 22:53:16,414 INFO L226 Difference]: Without dead ends: 48 [2018-11-06 22:53:16,415 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2018-11-06 22:53:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-06 22:53:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-06 22:53:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-06 22:53:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-11-06 22:53:16,421 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 44 [2018-11-06 22:53:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:16,422 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-11-06 22:53:16,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-06 22:53:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-11-06 22:53:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-06 22:53:16,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:16,423 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:16,423 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:16,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1417949652, now seen corresponding path program 13 times [2018-11-06 22:53:16,423 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:16,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:16,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:16,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:16,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:16,435 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:16,435 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:16,435 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:16,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:16,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:17,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:17,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-11-06 22:53:17,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-06 22:53:17,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-06 22:53:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2018-11-06 22:53:17,143 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 31 states. [2018-11-06 22:53:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:17,810 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-11-06 22:53:17,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-06 22:53:17,811 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 47 [2018-11-06 22:53:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:17,812 INFO L225 Difference]: With dead ends: 55 [2018-11-06 22:53:17,812 INFO L226 Difference]: Without dead ends: 51 [2018-11-06 22:53:17,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=986, Unknown=0, NotChecked=0, Total=1056 [2018-11-06 22:53:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-06 22:53:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-06 22:53:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-06 22:53:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-11-06 22:53:17,820 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 47 [2018-11-06 22:53:17,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:17,820 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-11-06 22:53:17,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-06 22:53:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-11-06 22:53:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-06 22:53:17,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:17,822 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:17,822 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:17,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:17,822 INFO L82 PathProgramCache]: Analyzing trace with hash 512469553, now seen corresponding path program 14 times [2018-11-06 22:53:17,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:17,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:17,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:17,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:17,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:17,834 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:17,834 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:17,834 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:17,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:53:17,878 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:53:17,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:17,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:18,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:18,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-11-06 22:53:18,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-06 22:53:18,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-06 22:53:18,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2018-11-06 22:53:18,704 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 33 states. [2018-11-06 22:53:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:19,541 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-11-06 22:53:19,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-06 22:53:19,542 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 50 [2018-11-06 22:53:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:19,543 INFO L225 Difference]: With dead ends: 58 [2018-11-06 22:53:19,543 INFO L226 Difference]: Without dead ends: 54 [2018-11-06 22:53:19,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=1116, Unknown=0, NotChecked=0, Total=1190 [2018-11-06 22:53:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-06 22:53:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-11-06 22:53:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-06 22:53:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-11-06 22:53:19,550 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 50 [2018-11-06 22:53:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:19,550 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-11-06 22:53:19,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-06 22:53:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-11-06 22:53:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-06 22:53:19,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:19,551 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:19,552 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:19,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash 18912268, now seen corresponding path program 15 times [2018-11-06 22:53:19,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:19,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:19,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:19,553 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:19,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:19,562 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:19,563 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:19,563 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:19,573 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:53:19,617 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-06 22:53:19,617 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:19,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:21,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:21,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-11-06 22:53:21,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-06 22:53:21,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-06 22:53:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-11-06 22:53:21,410 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 35 states. [2018-11-06 22:53:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:22,145 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-06 22:53:22,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-06 22:53:22,145 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 53 [2018-11-06 22:53:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:22,146 INFO L225 Difference]: With dead ends: 61 [2018-11-06 22:53:22,146 INFO L226 Difference]: Without dead ends: 57 [2018-11-06 22:53:22,148 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=1255, Unknown=0, NotChecked=0, Total=1332 [2018-11-06 22:53:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-06 22:53:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-06 22:53:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-06 22:53:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-11-06 22:53:22,154 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 53 [2018-11-06 22:53:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:22,154 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-11-06 22:53:22,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-06 22:53:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-11-06 22:53:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-06 22:53:22,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:22,155 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:22,156 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:22,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1873110959, now seen corresponding path program 16 times [2018-11-06 22:53:22,156 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:22,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:22,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:22,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:22,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:22,166 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:22,166 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:22,167 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:22,185 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:53:22,207 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:53:22,207 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:22,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:23,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:23,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-11-06 22:53:23,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-06 22:53:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-06 22:53:23,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2018-11-06 22:53:23,012 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 37 states. [2018-11-06 22:53:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:23,867 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-11-06 22:53:23,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-06 22:53:23,867 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 56 [2018-11-06 22:53:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:23,868 INFO L225 Difference]: With dead ends: 64 [2018-11-06 22:53:23,868 INFO L226 Difference]: Without dead ends: 60 [2018-11-06 22:53:23,869 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=1400, Unknown=0, NotChecked=0, Total=1482 [2018-11-06 22:53:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-06 22:53:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-11-06 22:53:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-06 22:53:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-11-06 22:53:23,873 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 56 [2018-11-06 22:53:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:23,873 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-11-06 22:53:23,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-06 22:53:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-11-06 22:53:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-06 22:53:23,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:23,874 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:23,874 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:23,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:23,875 INFO L82 PathProgramCache]: Analyzing trace with hash 13726188, now seen corresponding path program 17 times [2018-11-06 22:53:23,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:23,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:23,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:23,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:23,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:23,884 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:23,885 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:23,885 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:23,904 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:53:23,935 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-06 22:53:23,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:23,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:25,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:25,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-11-06 22:53:25,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-06 22:53:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-06 22:53:25,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2018-11-06 22:53:25,064 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 39 states. [2018-11-06 22:53:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:26,110 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-11-06 22:53:26,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-06 22:53:26,110 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 59 [2018-11-06 22:53:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:26,111 INFO L225 Difference]: With dead ends: 67 [2018-11-06 22:53:26,111 INFO L226 Difference]: Without dead ends: 63 [2018-11-06 22:53:26,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=1554, Unknown=0, NotChecked=0, Total=1640 [2018-11-06 22:53:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-06 22:53:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-11-06 22:53:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-06 22:53:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-11-06 22:53:26,119 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 59 [2018-11-06 22:53:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:26,119 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-11-06 22:53:26,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-06 22:53:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-11-06 22:53:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-06 22:53:26,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:26,120 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:26,121 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:26,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1752797583, now seen corresponding path program 18 times [2018-11-06 22:53:26,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:26,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:26,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:26,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:26,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:26,130 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:26,131 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:26,131 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:26,146 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:53:26,184 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-06 22:53:26,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:26,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:27,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:27,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-11-06 22:53:27,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-06 22:53:27,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-06 22:53:27,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2018-11-06 22:53:27,088 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 41 states. [2018-11-06 22:53:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:28,200 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-11-06 22:53:28,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-06 22:53:28,201 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 62 [2018-11-06 22:53:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:28,201 INFO L225 Difference]: With dead ends: 70 [2018-11-06 22:53:28,202 INFO L226 Difference]: Without dead ends: 66 [2018-11-06 22:53:28,203 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=1716, Unknown=0, NotChecked=0, Total=1806 [2018-11-06 22:53:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-06 22:53:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-11-06 22:53:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-06 22:53:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-11-06 22:53:28,209 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 62 [2018-11-06 22:53:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:28,209 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-11-06 22:53:28,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-06 22:53:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-11-06 22:53:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-06 22:53:28,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:28,210 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:28,210 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:28,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:28,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2028181556, now seen corresponding path program 19 times [2018-11-06 22:53:28,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:28,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:28,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:28,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:28,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:28,221 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:28,221 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:28,221 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:28,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:28,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:29,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:29,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-11-06 22:53:29,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-06 22:53:29,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-06 22:53:29,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2018-11-06 22:53:29,754 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 43 states. [2018-11-06 22:53:30,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:30,919 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-11-06 22:53:30,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-06 22:53:30,919 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 65 [2018-11-06 22:53:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:30,920 INFO L225 Difference]: With dead ends: 73 [2018-11-06 22:53:30,920 INFO L226 Difference]: Without dead ends: 69 [2018-11-06 22:53:30,921 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=1886, Unknown=0, NotChecked=0, Total=1980 [2018-11-06 22:53:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-06 22:53:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-11-06 22:53:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-06 22:53:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-11-06 22:53:30,929 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 65 [2018-11-06 22:53:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:30,930 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-11-06 22:53:30,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-06 22:53:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-11-06 22:53:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-06 22:53:30,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:30,931 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:30,931 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:30,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:30,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1690381457, now seen corresponding path program 20 times [2018-11-06 22:53:30,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:30,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:30,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:30,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:30,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:30,941 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:30,941 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:30,941 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:30,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:53:30,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:53:30,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:30,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:32,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:32,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-11-06 22:53:32,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-06 22:53:32,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-06 22:53:32,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2018-11-06 22:53:32,091 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 45 states. [2018-11-06 22:53:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:33,252 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-11-06 22:53:33,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-06 22:53:33,255 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 68 [2018-11-06 22:53:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:33,255 INFO L225 Difference]: With dead ends: 76 [2018-11-06 22:53:33,255 INFO L226 Difference]: Without dead ends: 72 [2018-11-06 22:53:33,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=2064, Unknown=0, NotChecked=0, Total=2162 [2018-11-06 22:53:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-06 22:53:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-11-06 22:53:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-06 22:53:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-11-06 22:53:33,260 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 68 [2018-11-06 22:53:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:33,260 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-11-06 22:53:33,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-06 22:53:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-11-06 22:53:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-06 22:53:33,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:33,261 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:33,261 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:33,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1309636012, now seen corresponding path program 21 times [2018-11-06 22:53:33,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:33,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:33,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:33,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:33,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:33,270 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:33,270 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:33,270 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:33,283 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:53:33,362 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-06 22:53:33,362 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:33,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:35,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:35,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-11-06 22:53:35,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-06 22:53:35,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-06 22:53:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-11-06 22:53:35,301 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 47 states. [2018-11-06 22:53:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:36,593 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-11-06 22:53:36,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-06 22:53:36,594 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 71 [2018-11-06 22:53:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:36,594 INFO L225 Difference]: With dead ends: 79 [2018-11-06 22:53:36,595 INFO L226 Difference]: Without dead ends: 75 [2018-11-06 22:53:36,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=101, Invalid=2251, Unknown=0, NotChecked=0, Total=2352 [2018-11-06 22:53:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-06 22:53:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-11-06 22:53:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-06 22:53:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-11-06 22:53:36,601 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 71 [2018-11-06 22:53:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:36,602 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-11-06 22:53:36,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-06 22:53:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-11-06 22:53:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-06 22:53:36,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:36,603 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:36,603 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:36,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:36,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1530712753, now seen corresponding path program 22 times [2018-11-06 22:53:36,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:36,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:36,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:36,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:36,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:36,613 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:36,613 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:36,613 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:36,640 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:53:36,676 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:53:36,676 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:36,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:38,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:38,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-11-06 22:53:38,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-06 22:53:38,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-06 22:53:38,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2018-11-06 22:53:38,438 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 49 states. [2018-11-06 22:53:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:39,776 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-11-06 22:53:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-06 22:53:39,776 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 74 [2018-11-06 22:53:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:39,777 INFO L225 Difference]: With dead ends: 82 [2018-11-06 22:53:39,777 INFO L226 Difference]: Without dead ends: 78 [2018-11-06 22:53:39,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=2444, Unknown=0, NotChecked=0, Total=2550 [2018-11-06 22:53:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-06 22:53:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-11-06 22:53:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-06 22:53:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-11-06 22:53:39,782 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 74 [2018-11-06 22:53:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:39,782 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-11-06 22:53:39,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-06 22:53:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-11-06 22:53:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-06 22:53:39,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:39,783 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:39,783 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:39,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash -851928180, now seen corresponding path program 23 times [2018-11-06 22:53:39,784 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:39,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:39,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:39,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:39,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:39,793 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:39,793 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:39,793 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:39,810 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:53:39,855 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-06 22:53:39,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:39,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:41,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:41,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-11-06 22:53:41,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-06 22:53:41,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-06 22:53:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2018-11-06 22:53:41,514 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 51 states. [2018-11-06 22:53:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:42,966 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-11-06 22:53:42,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-06 22:53:42,966 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 77 [2018-11-06 22:53:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:42,967 INFO L225 Difference]: With dead ends: 85 [2018-11-06 22:53:42,967 INFO L226 Difference]: Without dead ends: 81 [2018-11-06 22:53:42,969 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=2646, Unknown=0, NotChecked=0, Total=2756 [2018-11-06 22:53:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-06 22:53:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-11-06 22:53:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-06 22:53:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-11-06 22:53:42,973 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 77 [2018-11-06 22:53:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:42,974 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-11-06 22:53:42,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-06 22:53:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-11-06 22:53:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-06 22:53:42,975 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:42,975 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:42,975 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:42,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash 816537809, now seen corresponding path program 24 times [2018-11-06 22:53:42,975 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:42,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:42,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:42,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:42,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:42,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:42,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:42,988 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:43,019 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:53:43,076 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-06 22:53:43,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:43,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:45,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:45,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-11-06 22:53:45,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-06 22:53:45,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-06 22:53:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2018-11-06 22:53:45,482 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 53 states. [2018-11-06 22:53:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:47,043 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-11-06 22:53:47,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-06 22:53:47,043 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 80 [2018-11-06 22:53:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:47,044 INFO L225 Difference]: With dead ends: 88 [2018-11-06 22:53:47,045 INFO L226 Difference]: Without dead ends: 84 [2018-11-06 22:53:47,046 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=114, Invalid=2856, Unknown=0, NotChecked=0, Total=2970 [2018-11-06 22:53:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-06 22:53:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-11-06 22:53:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-06 22:53:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-11-06 22:53:47,051 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 80 [2018-11-06 22:53:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:47,051 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-11-06 22:53:47,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-06 22:53:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-11-06 22:53:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-06 22:53:47,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:47,052 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:47,052 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:47,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:47,052 INFO L82 PathProgramCache]: Analyzing trace with hash 430299500, now seen corresponding path program 25 times [2018-11-06 22:53:47,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:47,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:47,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:47,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:47,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:47,060 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:47,060 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:47,061 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:47,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:53:47,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:48,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:48,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-11-06 22:53:48,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-11-06 22:53:48,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-11-06 22:53:48,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2018-11-06 22:53:48,557 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 55 states. [2018-11-06 22:53:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:50,473 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-11-06 22:53:50,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-06 22:53:50,473 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 83 [2018-11-06 22:53:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:50,474 INFO L225 Difference]: With dead ends: 91 [2018-11-06 22:53:50,474 INFO L226 Difference]: Without dead ends: 87 [2018-11-06 22:53:50,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=118, Invalid=3074, Unknown=0, NotChecked=0, Total=3192 [2018-11-06 22:53:50,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-06 22:53:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-11-06 22:53:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-06 22:53:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-11-06 22:53:50,480 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 83 [2018-11-06 22:53:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:50,480 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-11-06 22:53:50,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-11-06 22:53:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-11-06 22:53:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-06 22:53:50,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:50,481 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:50,481 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:50,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash 222222065, now seen corresponding path program 26 times [2018-11-06 22:53:50,482 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:50,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:50,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:50,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:53:50,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:50,489 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:50,489 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:50,489 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:50,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:53:50,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:53:50,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:50,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:52,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:52,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-11-06 22:53:52,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-11-06 22:53:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-11-06 22:53:52,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2018-11-06 22:53:52,261 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 57 states. [2018-11-06 22:53:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:54,040 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-11-06 22:53:54,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-06 22:53:54,041 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 86 [2018-11-06 22:53:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:54,042 INFO L225 Difference]: With dead ends: 94 [2018-11-06 22:53:54,042 INFO L226 Difference]: Without dead ends: 90 [2018-11-06 22:53:54,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=122, Invalid=3300, Unknown=0, NotChecked=0, Total=3422 [2018-11-06 22:53:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-06 22:53:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-11-06 22:53:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-06 22:53:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-11-06 22:53:54,047 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 86 [2018-11-06 22:53:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:54,048 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-11-06 22:53:54,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-11-06 22:53:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-11-06 22:53:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-06 22:53:54,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:54,049 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:54,049 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:54,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash -974835892, now seen corresponding path program 27 times [2018-11-06 22:53:54,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:54,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:54,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:54,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:54,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:54,058 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:54,058 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:54,058 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:54,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:53:54,239 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-06 22:53:54,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:54,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:53:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:53:56,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:53:56,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-11-06 22:53:56,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-11-06 22:53:56,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-11-06 22:53:56,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-11-06 22:53:56,512 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 59 states. [2018-11-06 22:53:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:53:58,509 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-11-06 22:53:58,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-11-06 22:53:58,509 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 89 [2018-11-06 22:53:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:53:58,510 INFO L225 Difference]: With dead ends: 97 [2018-11-06 22:53:58,511 INFO L226 Difference]: Without dead ends: 93 [2018-11-06 22:53:58,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=125, Invalid=3535, Unknown=0, NotChecked=0, Total=3660 [2018-11-06 22:53:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-06 22:53:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-11-06 22:53:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-06 22:53:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-11-06 22:53:58,517 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 89 [2018-11-06 22:53:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:53:58,517 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-11-06 22:53:58,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-11-06 22:53:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-11-06 22:53:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-06 22:53:58,518 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:53:58,518 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:53:58,519 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:53:58,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:53:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1414974191, now seen corresponding path program 28 times [2018-11-06 22:53:58,519 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:53:58,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:53:58,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:58,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:53:58,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:53:58,527 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:53:58,527 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:53:58,527 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:53:58,542 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:53:58,598 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:53:58,598 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:53:58,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:00,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:00,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-11-06 22:54:00,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-11-06 22:54:00,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-11-06 22:54:00,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2018-11-06 22:54:00,714 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 61 states. [2018-11-06 22:54:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:02,827 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-11-06 22:54:02,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-11-06 22:54:02,827 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 92 [2018-11-06 22:54:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:02,828 INFO L225 Difference]: With dead ends: 100 [2018-11-06 22:54:02,828 INFO L226 Difference]: Without dead ends: 96 [2018-11-06 22:54:02,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=130, Invalid=3776, Unknown=0, NotChecked=0, Total=3906 [2018-11-06 22:54:02,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-06 22:54:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-11-06 22:54:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-06 22:54:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-11-06 22:54:02,832 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 92 [2018-11-06 22:54:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:02,832 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-11-06 22:54:02,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-11-06 22:54:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-11-06 22:54:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-06 22:54:02,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:02,833 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:02,833 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:02,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:02,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1039885012, now seen corresponding path program 29 times [2018-11-06 22:54:02,833 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:02,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:02,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:02,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:02,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:02,841 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:02,841 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:02,841 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:02,855 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:54:02,916 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-06 22:54:02,916 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:02,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:04,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:04,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-11-06 22:54:04,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-11-06 22:54:04,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-11-06 22:54:04,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2018-11-06 22:54:04,900 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 63 states. [2018-11-06 22:54:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:07,424 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-11-06 22:54:07,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-11-06 22:54:07,425 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 95 [2018-11-06 22:54:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:07,426 INFO L225 Difference]: With dead ends: 103 [2018-11-06 22:54:07,426 INFO L226 Difference]: Without dead ends: 99 [2018-11-06 22:54:07,427 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=134, Invalid=4026, Unknown=0, NotChecked=0, Total=4160 [2018-11-06 22:54:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-06 22:54:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-11-06 22:54:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-06 22:54:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-11-06 22:54:07,430 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 95 [2018-11-06 22:54:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:07,431 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-11-06 22:54:07,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-11-06 22:54:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-11-06 22:54:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-06 22:54:07,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:07,431 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:07,431 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:07,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2031909681, now seen corresponding path program 30 times [2018-11-06 22:54:07,432 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:07,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:07,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:07,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:07,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:07,439 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:07,440 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:07,440 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:07,461 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:54:07,566 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-06 22:54:07,567 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:07,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:09,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:09,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-11-06 22:54:09,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-11-06 22:54:09,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-11-06 22:54:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2018-11-06 22:54:09,670 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 65 states. [2018-11-06 22:54:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:12,264 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-11-06 22:54:12,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-11-06 22:54:12,265 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 98 [2018-11-06 22:54:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:12,266 INFO L225 Difference]: With dead ends: 106 [2018-11-06 22:54:12,266 INFO L226 Difference]: Without dead ends: 102 [2018-11-06 22:54:12,267 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=138, Invalid=4284, Unknown=0, NotChecked=0, Total=4422 [2018-11-06 22:54:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-11-06 22:54:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-11-06 22:54:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-11-06 22:54:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-11-06 22:54:12,272 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 98 [2018-11-06 22:54:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:12,272 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-11-06 22:54:12,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-11-06 22:54:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-11-06 22:54:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-06 22:54:12,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:12,273 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:12,274 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:12,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash 999432972, now seen corresponding path program 31 times [2018-11-06 22:54:12,274 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:12,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:12,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:12,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:12,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:12,282 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:12,282 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:12,282 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:12,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:54:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:54:12,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:15,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:15,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-11-06 22:54:15,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-11-06 22:54:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-11-06 22:54:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4290, Unknown=0, NotChecked=0, Total=4422 [2018-11-06 22:54:15,238 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 67 states. [2018-11-06 22:54:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:17,936 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-11-06 22:54:17,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-11-06 22:54:17,936 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 101 [2018-11-06 22:54:17,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:17,938 INFO L225 Difference]: With dead ends: 109 [2018-11-06 22:54:17,938 INFO L226 Difference]: Without dead ends: 105 [2018-11-06 22:54:17,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=142, Invalid=4550, Unknown=0, NotChecked=0, Total=4692 [2018-11-06 22:54:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-06 22:54:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-11-06 22:54:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-11-06 22:54:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-11-06 22:54:17,944 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 101 [2018-11-06 22:54:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:17,945 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-11-06 22:54:17,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-11-06 22:54:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-11-06 22:54:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-06 22:54:17,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:17,946 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:17,946 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:17,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1253398191, now seen corresponding path program 32 times [2018-11-06 22:54:17,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:17,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:17,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:17,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:54:17,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:17,954 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:17,955 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:17,955 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:17,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:54:18,021 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:54:18,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:18,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:20,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:20,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-11-06 22:54:20,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-11-06 22:54:20,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-11-06 22:54:20,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4556, Unknown=0, NotChecked=0, Total=4692 [2018-11-06 22:54:20,254 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 69 states. [2018-11-06 22:54:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:23,098 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-11-06 22:54:23,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-11-06 22:54:23,099 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 104 [2018-11-06 22:54:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:23,100 INFO L225 Difference]: With dead ends: 112 [2018-11-06 22:54:23,100 INFO L226 Difference]: Without dead ends: 108 [2018-11-06 22:54:23,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=146, Invalid=4824, Unknown=0, NotChecked=0, Total=4970 [2018-11-06 22:54:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-06 22:54:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-11-06 22:54:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-11-06 22:54:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-11-06 22:54:23,105 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 104 [2018-11-06 22:54:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:23,106 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-11-06 22:54:23,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-11-06 22:54:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-11-06 22:54:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-06 22:54:23,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:23,106 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:23,107 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:23,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:23,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2107359468, now seen corresponding path program 33 times [2018-11-06 22:54:23,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:23,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:23,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:23,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:23,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:23,114 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:23,114 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:23,114 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:23,125 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:54:23,461 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-11-06 22:54:23,462 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:23,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:26,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:26,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-11-06 22:54:26,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-11-06 22:54:26,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-11-06 22:54:26,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-11-06 22:54:26,242 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 71 states. [2018-11-06 22:54:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:29,108 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-11-06 22:54:29,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-11-06 22:54:29,109 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 107 [2018-11-06 22:54:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:29,110 INFO L225 Difference]: With dead ends: 115 [2018-11-06 22:54:29,110 INFO L226 Difference]: Without dead ends: 111 [2018-11-06 22:54:29,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=149, Invalid=5107, Unknown=0, NotChecked=0, Total=5256 [2018-11-06 22:54:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-06 22:54:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-11-06 22:54:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-06 22:54:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-11-06 22:54:29,115 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 107 [2018-11-06 22:54:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:29,115 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-11-06 22:54:29,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-11-06 22:54:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-11-06 22:54:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-06 22:54:29,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:29,116 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:29,116 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:29,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1838825615, now seen corresponding path program 34 times [2018-11-06 22:54:29,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:29,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:29,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:29,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:29,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:29,125 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:29,126 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:29,126 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:29,135 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:54:29,187 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:54:29,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:29,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:32,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:32,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-11-06 22:54:32,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-11-06 22:54:32,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-11-06 22:54:32,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=5112, Unknown=0, NotChecked=0, Total=5256 [2018-11-06 22:54:32,213 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 73 states. [2018-11-06 22:54:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:35,187 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-11-06 22:54:35,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-11-06 22:54:35,187 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 110 [2018-11-06 22:54:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:35,188 INFO L225 Difference]: With dead ends: 118 [2018-11-06 22:54:35,189 INFO L226 Difference]: Without dead ends: 114 [2018-11-06 22:54:35,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=154, Invalid=5396, Unknown=0, NotChecked=0, Total=5550 [2018-11-06 22:54:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-06 22:54:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-11-06 22:54:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-11-06 22:54:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-11-06 22:54:35,195 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 110 [2018-11-06 22:54:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:35,195 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-11-06 22:54:35,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-11-06 22:54:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-11-06 22:54:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-06 22:54:35,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:35,196 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:35,196 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:35,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:35,197 INFO L82 PathProgramCache]: Analyzing trace with hash -793807156, now seen corresponding path program 35 times [2018-11-06 22:54:35,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:35,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:35,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:35,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:35,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:35,206 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:35,206 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:35,206 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:35,216 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:54:35,298 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-11-06 22:54:35,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:35,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:38,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:38,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-11-06 22:54:38,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-11-06 22:54:38,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-11-06 22:54:38,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2018-11-06 22:54:38,037 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 75 states. [2018-11-06 22:54:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:41,103 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-11-06 22:54:41,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-11-06 22:54:41,104 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 113 [2018-11-06 22:54:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:41,105 INFO L225 Difference]: With dead ends: 121 [2018-11-06 22:54:41,105 INFO L226 Difference]: Without dead ends: 117 [2018-11-06 22:54:41,106 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=158, Invalid=5694, Unknown=0, NotChecked=0, Total=5852 [2018-11-06 22:54:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-06 22:54:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-11-06 22:54:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-11-06 22:54:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-11-06 22:54:41,111 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 113 [2018-11-06 22:54:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:41,111 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-11-06 22:54:41,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-11-06 22:54:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-11-06 22:54:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-06 22:54:41,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:41,112 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:41,112 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:41,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1428143505, now seen corresponding path program 36 times [2018-11-06 22:54:41,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:41,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:41,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:41,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:41,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:41,120 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:41,121 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:41,121 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:41,135 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:54:41,251 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-11-06 22:54:41,251 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:41,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:44,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:44,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-11-06 22:54:44,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-11-06 22:54:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-11-06 22:54:44,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=5700, Unknown=0, NotChecked=0, Total=5852 [2018-11-06 22:54:44,237 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 77 states. [2018-11-06 22:54:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:47,734 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-11-06 22:54:47,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-11-06 22:54:47,734 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 116 [2018-11-06 22:54:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:47,735 INFO L225 Difference]: With dead ends: 124 [2018-11-06 22:54:47,736 INFO L226 Difference]: Without dead ends: 120 [2018-11-06 22:54:47,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=162, Invalid=6000, Unknown=0, NotChecked=0, Total=6162 [2018-11-06 22:54:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-06 22:54:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-11-06 22:54:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-11-06 22:54:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-11-06 22:54:47,740 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 116 [2018-11-06 22:54:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:47,741 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-11-06 22:54:47,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-11-06 22:54:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-11-06 22:54:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-06 22:54:47,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:47,742 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:47,742 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:47,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1524319404, now seen corresponding path program 37 times [2018-11-06 22:54:47,742 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:47,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:47,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:47,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:54:47,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:47,750 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:47,750 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:47,750 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:47,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:54:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:54:47,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:50,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:50,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-11-06 22:54:50,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-11-06 22:54:50,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-11-06 22:54:50,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=6006, Unknown=0, NotChecked=0, Total=6162 [2018-11-06 22:54:50,703 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 79 states. [2018-11-06 22:54:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:54:54,337 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-11-06 22:54:54,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-11-06 22:54:54,338 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 119 [2018-11-06 22:54:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:54:54,339 INFO L225 Difference]: With dead ends: 127 [2018-11-06 22:54:54,339 INFO L226 Difference]: Without dead ends: 123 [2018-11-06 22:54:54,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=166, Invalid=6314, Unknown=0, NotChecked=0, Total=6480 [2018-11-06 22:54:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-11-06 22:54:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-11-06 22:54:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-11-06 22:54:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-11-06 22:54:54,344 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 119 [2018-11-06 22:54:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:54:54,345 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-11-06 22:54:54,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-11-06 22:54:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-11-06 22:54:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-06 22:54:54,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:54:54,346 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:54:54,346 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:54:54,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:54:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1957340081, now seen corresponding path program 38 times [2018-11-06 22:54:54,346 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:54:54,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:54:54,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:54,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:54:54,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:54:54,354 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:54:54,354 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:54:54,354 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:54:54,372 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:54:54,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:54:54,447 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:54:54,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:54:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:54:58,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:54:58,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-11-06 22:54:58,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-11-06 22:54:58,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-11-06 22:54:58,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=6320, Unknown=0, NotChecked=0, Total=6480 [2018-11-06 22:54:58,301 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 81 states. [2018-11-06 22:55:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:03,305 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-11-06 22:55:03,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-11-06 22:55:03,305 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 122 [2018-11-06 22:55:03,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:03,307 INFO L225 Difference]: With dead ends: 130 [2018-11-06 22:55:03,307 INFO L226 Difference]: Without dead ends: 126 [2018-11-06 22:55:03,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=170, Invalid=6636, Unknown=0, NotChecked=0, Total=6806 [2018-11-06 22:55:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-11-06 22:55:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-11-06 22:55:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-06 22:55:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-11-06 22:55:03,313 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 122 [2018-11-06 22:55:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:03,313 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-11-06 22:55:03,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-11-06 22:55:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-11-06 22:55:03,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-06 22:55:03,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:03,314 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:03,314 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:03,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:03,315 INFO L82 PathProgramCache]: Analyzing trace with hash -5428596, now seen corresponding path program 39 times [2018-11-06 22:55:03,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:03,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:03,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:03,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:55:03,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:03,323 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:03,323 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:03,323 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:03,341 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:55:04,178 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-11-06 22:55:04,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:55:04,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:55:08,010 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:55:08,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-11-06 22:55:08,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-11-06 22:55:08,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-11-06 22:55:08,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-11-06 22:55:08,012 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 83 states. [2018-11-06 22:55:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:11,856 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-11-06 22:55:11,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-11-06 22:55:11,856 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 125 [2018-11-06 22:55:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:11,857 INFO L225 Difference]: With dead ends: 133 [2018-11-06 22:55:11,857 INFO L226 Difference]: Without dead ends: 129 [2018-11-06 22:55:11,858 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=173, Invalid=6967, Unknown=0, NotChecked=0, Total=7140 [2018-11-06 22:55:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-11-06 22:55:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-11-06 22:55:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-11-06 22:55:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-11-06 22:55:11,863 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 125 [2018-11-06 22:55:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:11,864 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-11-06 22:55:11,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-11-06 22:55:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-11-06 22:55:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-06 22:55:11,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:11,865 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:11,865 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:11,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1162317359, now seen corresponding path program 40 times [2018-11-06 22:55:11,866 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:11,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:11,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:11,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:55:11,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:11,874 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:11,874 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:11,874 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:11,890 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:55:11,977 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:55:11,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:55:11,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:55:15,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:55:15,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-11-06 22:55:15,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-11-06 22:55:15,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-11-06 22:55:15,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6972, Unknown=0, NotChecked=0, Total=7140 [2018-11-06 22:55:15,905 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 85 states. [2018-11-06 22:55:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:20,111 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-11-06 22:55:20,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-11-06 22:55:20,111 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 128 [2018-11-06 22:55:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:20,112 INFO L225 Difference]: With dead ends: 136 [2018-11-06 22:55:20,113 INFO L226 Difference]: Without dead ends: 132 [2018-11-06 22:55:20,113 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=178, Invalid=7304, Unknown=0, NotChecked=0, Total=7482 [2018-11-06 22:55:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-11-06 22:55:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-11-06 22:55:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-06 22:55:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-11-06 22:55:20,118 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 128 [2018-11-06 22:55:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:20,119 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-11-06 22:55:20,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-11-06 22:55:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-11-06 22:55:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-06 22:55:20,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:20,120 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:20,120 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:20,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1077094508, now seen corresponding path program 41 times [2018-11-06 22:55:20,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:20,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:20,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:20,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:55:20,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:20,129 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:20,130 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:20,130 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:20,148 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:55:20,277 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-11-06 22:55:20,277 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:55:20,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:55:24,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:55:24,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-11-06 22:55:24,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-11-06 22:55:24,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-11-06 22:55:24,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2018-11-06 22:55:24,783 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 87 states. [2018-11-06 22:55:29,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:29,199 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-11-06 22:55:29,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-11-06 22:55:29,200 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 131 [2018-11-06 22:55:29,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:29,201 INFO L225 Difference]: With dead ends: 139 [2018-11-06 22:55:29,201 INFO L226 Difference]: Without dead ends: 135 [2018-11-06 22:55:29,202 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=182, Invalid=7650, Unknown=0, NotChecked=0, Total=7832 [2018-11-06 22:55:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-11-06 22:55:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-11-06 22:55:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-11-06 22:55:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-11-06 22:55:29,207 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 131 [2018-11-06 22:55:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:29,207 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-11-06 22:55:29,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-11-06 22:55:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-11-06 22:55:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-06 22:55:29,208 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:29,208 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:29,209 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:29,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:29,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1669015537, now seen corresponding path program 42 times [2018-11-06 22:55:29,209 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:29,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:29,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:29,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:55:29,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:29,217 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:29,217 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:29,217 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:29,232 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:55:29,394 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-06 22:55:29,394 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:55:29,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:55:34,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:55:34,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-11-06 22:55:34,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-11-06 22:55:34,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-11-06 22:55:34,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=7656, Unknown=0, NotChecked=0, Total=7832 [2018-11-06 22:55:34,185 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 89 states. [2018-11-06 22:55:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:38,713 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-11-06 22:55:38,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-11-06 22:55:38,713 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 134 [2018-11-06 22:55:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:38,714 INFO L225 Difference]: With dead ends: 142 [2018-11-06 22:55:38,714 INFO L226 Difference]: Without dead ends: 138 [2018-11-06 22:55:38,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=186, Invalid=8004, Unknown=0, NotChecked=0, Total=8190 [2018-11-06 22:55:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-06 22:55:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-11-06 22:55:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-11-06 22:55:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-11-06 22:55:38,721 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 134 [2018-11-06 22:55:38,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:38,721 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-11-06 22:55:38,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-11-06 22:55:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-11-06 22:55:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-06 22:55:38,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:38,722 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:38,722 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:38,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:38,723 INFO L82 PathProgramCache]: Analyzing trace with hash 452673100, now seen corresponding path program 43 times [2018-11-06 22:55:38,723 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:38,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:38,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:38,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:55:38,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:38,731 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:38,731 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:38,731 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:38,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:55:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:55:38,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:55:42,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:55:42,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-11-06 22:55:42,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-11-06 22:55:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-11-06 22:55:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=8010, Unknown=0, NotChecked=0, Total=8190 [2018-11-06 22:55:42,664 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 91 states. [2018-11-06 22:55:47,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:47,449 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-11-06 22:55:47,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-11-06 22:55:47,449 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 137 [2018-11-06 22:55:47,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:47,450 INFO L225 Difference]: With dead ends: 145 [2018-11-06 22:55:47,451 INFO L226 Difference]: Without dead ends: 141 [2018-11-06 22:55:47,451 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=190, Invalid=8366, Unknown=0, NotChecked=0, Total=8556 [2018-11-06 22:55:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-11-06 22:55:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-11-06 22:55:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-11-06 22:55:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-11-06 22:55:47,456 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 137 [2018-11-06 22:55:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:47,457 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-11-06 22:55:47,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-11-06 22:55:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-11-06 22:55:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-06 22:55:47,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:47,458 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:47,458 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:47,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1034208785, now seen corresponding path program 44 times [2018-11-06 22:55:47,459 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:47,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:47,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:47,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:55:47,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:47,467 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:47,467 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:47,467 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:47,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:55:47,573 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:55:47,573 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:55:47,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:55:51,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:55:51,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-11-06 22:55:51,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-11-06 22:55:51,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-11-06 22:55:51,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8372, Unknown=0, NotChecked=0, Total=8556 [2018-11-06 22:55:51,778 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 93 states. [2018-11-06 22:55:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:55:56,644 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-11-06 22:55:56,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-11-06 22:55:56,645 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 140 [2018-11-06 22:55:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:55:56,646 INFO L225 Difference]: With dead ends: 148 [2018-11-06 22:55:56,646 INFO L226 Difference]: Without dead ends: 144 [2018-11-06 22:55:56,647 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=194, Invalid=8736, Unknown=0, NotChecked=0, Total=8930 [2018-11-06 22:55:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-11-06 22:55:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-11-06 22:55:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-11-06 22:55:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-11-06 22:55:56,652 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 140 [2018-11-06 22:55:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:55:56,652 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-11-06 22:55:56,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-11-06 22:55:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-11-06 22:55:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-06 22:55:56,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:55:56,653 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:55:56,653 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:55:56,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:55:56,653 INFO L82 PathProgramCache]: Analyzing trace with hash -334271444, now seen corresponding path program 45 times [2018-11-06 22:55:56,653 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:55:56,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:55:56,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:56,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:55:56,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:55:56,661 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:55:56,661 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:55:56,661 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:55:56,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:55:57,928 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-11-06 22:55:57,929 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:55:57,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:55:58,200 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-06 22:55:58,378 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-06 22:55:59,658 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-06 22:56:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3060 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:56:04,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:56:04,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-11-06 22:56:04,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-11-06 22:56:04,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-11-06 22:56:04,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-11-06 22:56:04,230 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 95 states. [2018-11-06 22:56:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:56:09,467 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-11-06 22:56:09,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-11-06 22:56:09,467 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 143 [2018-11-06 22:56:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:56:09,468 INFO L225 Difference]: With dead ends: 151 [2018-11-06 22:56:09,469 INFO L226 Difference]: Without dead ends: 147 [2018-11-06 22:56:09,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=197, Invalid=9115, Unknown=0, NotChecked=0, Total=9312 [2018-11-06 22:56:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-11-06 22:56:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-11-06 22:56:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-11-06 22:56:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-11-06 22:56:09,473 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 143 [2018-11-06 22:56:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:56:09,474 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-11-06 22:56:09,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-11-06 22:56:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-11-06 22:56:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-06 22:56:09,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:56:09,474 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:56:09,475 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:56:09,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:56:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash -899199951, now seen corresponding path program 46 times [2018-11-06 22:56:09,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:56:09,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:56:09,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:09,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:56:09,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:09,483 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:56:09,483 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:56:09,483 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:56:09,494 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:56:09,576 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:56:09,576 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:56:09,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:56:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:56:14,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:56:14,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-11-06 22:56:14,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-11-06 22:56:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-11-06 22:56:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=9120, Unknown=0, NotChecked=0, Total=9312 [2018-11-06 22:56:14,244 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 97 states. [2018-11-06 22:56:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:56:19,564 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-11-06 22:56:19,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-11-06 22:56:19,564 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 146 [2018-11-06 22:56:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:56:19,565 INFO L225 Difference]: With dead ends: 154 [2018-11-06 22:56:19,565 INFO L226 Difference]: Without dead ends: 150 [2018-11-06 22:56:19,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=202, Invalid=9500, Unknown=0, NotChecked=0, Total=9702 [2018-11-06 22:56:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-11-06 22:56:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-11-06 22:56:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-11-06 22:56:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-11-06 22:56:19,571 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 146 [2018-11-06 22:56:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:56:19,571 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-11-06 22:56:19,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-11-06 22:56:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-11-06 22:56:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-06 22:56:19,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:56:19,572 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:56:19,572 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:56:19,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:56:19,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1292481036, now seen corresponding path program 47 times [2018-11-06 22:56:19,573 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:56:19,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:56:19,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:19,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:56:19,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:19,581 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:56:19,581 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:56:19,581 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:56:19,596 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:56:19,726 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-11-06 22:56:19,726 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:56:19,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:56:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3337 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:56:24,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:56:24,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-11-06 22:56:24,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-11-06 22:56:24,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-11-06 22:56:24,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=9506, Unknown=0, NotChecked=0, Total=9702 [2018-11-06 22:56:24,538 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 99 states. [2018-11-06 22:56:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:56:30,132 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-11-06 22:56:30,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-11-06 22:56:30,133 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 149 [2018-11-06 22:56:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:56:30,134 INFO L225 Difference]: With dead ends: 157 [2018-11-06 22:56:30,134 INFO L226 Difference]: Without dead ends: 153 [2018-11-06 22:56:30,135 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=206, Invalid=9894, Unknown=0, NotChecked=0, Total=10100 [2018-11-06 22:56:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-11-06 22:56:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-11-06 22:56:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-11-06 22:56:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-11-06 22:56:30,139 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 149 [2018-11-06 22:56:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:56:30,140 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-11-06 22:56:30,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-11-06 22:56:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-11-06 22:56:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-06 22:56:30,141 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:56:30,141 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:56:30,141 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:56:30,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:56:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1567930961, now seen corresponding path program 48 times [2018-11-06 22:56:30,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:56:30,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:56:30,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:30,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:56:30,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:30,150 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:56:30,150 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:56:30,150 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:56:30,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:56:30,344 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-11-06 22:56:30,344 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:56:30,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:56:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:56:35,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:56:35,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-11-06 22:56:35,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-11-06 22:56:35,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-11-06 22:56:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9900, Unknown=0, NotChecked=0, Total=10100 [2018-11-06 22:56:35,231 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 101 states. [2018-11-06 22:56:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:56:40,969 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-11-06 22:56:40,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-11-06 22:56:40,969 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 152 [2018-11-06 22:56:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:56:40,970 INFO L225 Difference]: With dead ends: 160 [2018-11-06 22:56:40,971 INFO L226 Difference]: Without dead ends: 156 [2018-11-06 22:56:40,971 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=210, Invalid=10296, Unknown=0, NotChecked=0, Total=10506 [2018-11-06 22:56:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-11-06 22:56:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-11-06 22:56:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-11-06 22:56:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-11-06 22:56:40,977 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 152 [2018-11-06 22:56:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:56:40,977 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-11-06 22:56:40,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-11-06 22:56:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-11-06 22:56:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-06 22:56:40,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:56:40,978 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 49, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:56:40,979 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:56:40,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:56:40,979 INFO L82 PathProgramCache]: Analyzing trace with hash -185856020, now seen corresponding path program 49 times [2018-11-06 22:56:40,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:56:40,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:56:40,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:40,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:56:40,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:40,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:56:40,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:56:40,988 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:56:41,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:56:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:56:41,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:56:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:56:46,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:56:46,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-11-06 22:56:46,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-11-06 22:56:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-11-06 22:56:46,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=10302, Unknown=0, NotChecked=0, Total=10506 [2018-11-06 22:56:46,205 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 103 states. [2018-11-06 22:56:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:56:52,193 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-11-06 22:56:52,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-11-06 22:56:52,194 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 155 [2018-11-06 22:56:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:56:52,195 INFO L225 Difference]: With dead ends: 163 [2018-11-06 22:56:52,195 INFO L226 Difference]: Without dead ends: 159 [2018-11-06 22:56:52,196 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=214, Invalid=10706, Unknown=0, NotChecked=0, Total=10920 [2018-11-06 22:56:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-11-06 22:56:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-11-06 22:56:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-11-06 22:56:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-11-06 22:56:52,200 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 155 [2018-11-06 22:56:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:56:52,200 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-11-06 22:56:52,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-11-06 22:56:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-11-06 22:56:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-06 22:56:52,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:56:52,202 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:56:52,202 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:56:52,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:56:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1023348849, now seen corresponding path program 50 times [2018-11-06 22:56:52,202 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:56:52,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:56:52,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:52,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:56:52,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:56:52,211 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:56:52,211 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:56:52,211 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:56:52,230 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:56:52,345 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:56:52,346 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:56:52,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:56:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:56:57,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:56:57,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-11-06 22:56:57,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-11-06 22:56:57,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-11-06 22:56:57,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2018-11-06 22:56:57,500 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 105 states. [2018-11-06 22:57:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:57:03,698 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-11-06 22:57:03,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-11-06 22:57:03,699 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 158 [2018-11-06 22:57:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:57:03,700 INFO L225 Difference]: With dead ends: 166 [2018-11-06 22:57:03,700 INFO L226 Difference]: Without dead ends: 162 [2018-11-06 22:57:03,701 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=218, Invalid=11124, Unknown=0, NotChecked=0, Total=11342 [2018-11-06 22:57:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-11-06 22:57:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-11-06 22:57:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-11-06 22:57:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-11-06 22:57:03,706 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 158 [2018-11-06 22:57:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:57:03,706 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-11-06 22:57:03,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-11-06 22:57:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-11-06 22:57:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-06 22:57:03,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:57:03,707 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 51, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:57:03,707 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:57:03,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:57:03,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1740077620, now seen corresponding path program 51 times [2018-11-06 22:57:03,707 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:57:03,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:57:03,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:57:03,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:57:03,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:57:03,715 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-06 22:57:03,715 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-06 22:57:03,715 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:57:03,729 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:57:05,915 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-11-06 22:57:05,915 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:57:05,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-11-06 22:57:09,965 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 22:57:10,166 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-06 22:57:10,166 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:57:10,173 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:57:10,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:57:10 BoogieIcfgContainer [2018-11-06 22:57:10,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:57:10,174 INFO L168 Benchmark]: Toolchain (without parser) took 246804.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -213.2 MB). Peak memory consumption was 514.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:57:10,174 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:57:10,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:57:10,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:57:10,176 INFO L168 Benchmark]: Boogie Preprocessor took 25.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:57:10,178 INFO L168 Benchmark]: RCFGBuilder took 330.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:57:10,179 INFO L168 Benchmark]: TraceAbstraction took 246120.76 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -14.2 MB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 570.5 MB). Peak memory consumption was 556.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:57:10,184 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 330.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246120.76 ms. Allocated memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -14.2 MB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 570.5 MB). Peak memory consumption was 556.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was analyzing trace of length 162 with TraceHistMax 52,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 88 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. TIMEOUT Result, 246.0s OverallTime, 53 OverallIterations, 52 TraceHistogramMax, 119.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1598 SDtfs, 151 SDslu, 99157 SDs, 0 SdLazy, 192777 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4284 GetRequests, 1483 SyntacticMatches, 0 SemanticMatches, 2801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 113.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 52 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 112.2s InterpolantComputationTime, 4240 NumberOfCodeBlocks, 4240 NumberOfCodeBlocksAsserted, 685 NumberOfCheckSat, 4188 ConstructedInterpolants, 0 QuantifiedInterpolants, 3506588 SizeOfPredicates, 252 NumberOfNonLiveVariables, 8670 ConjunctsInSsa, 5669 ConjunctsInUnsatCore, 52 InterpolantComputations, 2 PerfectInterpolantSequences, 0/65025 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown