java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:06:36,746 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:06:36,748 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:06:36,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:06:36,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:06:36,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:06:36,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:06:36,765 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:06:36,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:06:36,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:06:36,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:06:36,768 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:06:36,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:06:36,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:06:36,771 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:06:36,772 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:06:36,773 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:06:36,775 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:06:36,777 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:06:36,778 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:06:36,780 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:06:36,781 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:06:36,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 18:06:36,784 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 18:06:36,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 18:06:36,785 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 18:06:36,786 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 18:06:36,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 18:06:36,787 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 18:06:36,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 18:06:36,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 18:06:36,789 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 18:06:36,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 18:06:36,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 18:06:36,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 18:06:36,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 18:06:36,792 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:06:36,818 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:06:36,818 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:06:36,819 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:06:36,819 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:06:36,819 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:06:36,820 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:06:36,820 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:06:36,820 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:06:36,820 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:06:36,820 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:06:36,820 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:06:36,821 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:06:36,821 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:06:36,822 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:06:36,822 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:06:36,822 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:06:36,822 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:06:36,822 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:06:36,823 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:06:36,823 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:06:36,823 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:06:36,823 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:06:36,823 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:06:36,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:06:36,824 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:06:36,824 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:06:36,824 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:06:36,824 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:06:36,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:06:36,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:06:36,825 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:06:36,825 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:06:36,825 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:06:36,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:06:36,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:06:36,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:06:36,895 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:06:36,895 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:06:36,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-07-23 18:06:37,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fd6b539/fa45007de1654d359aa1b2728aff02d1/FLAG99f2b5c94 [2018-07-23 18:06:37,388 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:06:37,390 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-07-23 18:06:37,400 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fd6b539/fa45007de1654d359aa1b2728aff02d1/FLAG99f2b5c94 [2018-07-23 18:06:37,422 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8fd6b539/fa45007de1654d359aa1b2728aff02d1 [2018-07-23 18:06:37,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:06:37,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:06:37,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:06:37,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:06:37,450 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:06:37,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193ad906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37, skipping insertion in model container [2018-07-23 18:06:37,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,614 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:06:37,676 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:06:37,706 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:06:37,741 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:06:37,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37 WrapperNode [2018-07-23 18:06:37,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:06:37,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:06:37,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:06:37,761 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:06:37,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:06:37,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:06:37,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:06:37,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:06:37,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (1/1) ... [2018-07-23 18:06:37,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:06:37,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:06:37,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:06:37,837 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:06:37,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (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 [2018-07-23 18:06:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:06:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:06:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assert [2018-07-23 18:06:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assert [2018-07-23 18:06:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:06:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:06:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:06:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:06:38,541 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:06:38,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:06:38 BoogieIcfgContainer [2018-07-23 18:06:38,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:06:38,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:06:38,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:06:38,549 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:06:38,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:06:37" (1/3) ... [2018-07-23 18:06:38,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60057447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:06:38, skipping insertion in model container [2018-07-23 18:06:38,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:06:37" (2/3) ... [2018-07-23 18:06:38,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60057447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:06:38, skipping insertion in model container [2018-07-23 18:06:38,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:06:38" (3/3) ... [2018-07-23 18:06:38,555 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-07-23 18:06:38,566 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:06:38,573 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:06:38,621 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:06:38,622 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:06:38,622 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:06:38,622 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:06:38,622 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:06:38,622 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:06:38,623 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:06:38,623 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:06:38,623 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:06:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-07-23 18:06:38,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 18:06:38,648 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:38,649 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:38,649 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1725340710, now seen corresponding path program 1 times [2018-07-23 18:06:38,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:38,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:38,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:38,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:38,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:38,852 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:06:38,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 18:06:38,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:38,858 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-23 18:06:38,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-23 18:06:38,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 18:06:38,875 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-07-23 18:06:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:38,899 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-07-23 18:06:38,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-23 18:06:38,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-07-23 18:06:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:38,911 INFO L225 Difference]: With dead ends: 68 [2018-07-23 18:06:38,911 INFO L226 Difference]: Without dead ends: 34 [2018-07-23 18:06:38,915 INFO L573 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 [2018-07-23 18:06:38,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-23 18:06:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-23 18:06:38,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-23 18:06:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-07-23 18:06:38,960 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2018-07-23 18:06:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:38,960 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-07-23 18:06:38,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-23 18:06:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-07-23 18:06:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 18:06:38,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:38,962 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:38,963 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1379623414, now seen corresponding path program 1 times [2018-07-23 18:06:38,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:38,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:38,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:38,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:38,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:39,120 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:06:39,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:06:39,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:39,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:06:39,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:06:39,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:06:39,128 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2018-07-23 18:06:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:39,238 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-07-23 18:06:39,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:06:39,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-07-23 18:06:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:39,240 INFO L225 Difference]: With dead ends: 62 [2018-07-23 18:06:39,240 INFO L226 Difference]: Without dead ends: 38 [2018-07-23 18:06:39,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:06:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-23 18:06:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-07-23 18:06:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-23 18:06:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-07-23 18:06:39,248 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-07-23 18:06:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:39,249 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-07-23 18:06:39,249 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:06:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-07-23 18:06:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 18:06:39,250 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:39,250 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:39,250 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash 762401953, now seen corresponding path program 1 times [2018-07-23 18:06:39,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:39,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:39,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:39,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:39,252 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:39,516 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:39,516 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:39,517 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-07-23 18:06:39,519 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [32], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-07-23 18:06:39,568 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:06:39,568 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:06:39,696 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:06:39,697 INFO L272 AbstractInterpreter]: Visited 11 different actions 15 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 14 variables. [2018-07-23 18:06:39,744 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:06:39,922 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 68.18% of their original sizes. [2018-07-23 18:06:39,923 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:06:40,120 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:06:40,126 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:06:40,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2018-07-23 18:06:40,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:40,127 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 18:06:40,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 18:06:40,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 18:06:40,129 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-07-23 18:06:41,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:41,080 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-07-23 18:06:41,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:06:41,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-07-23 18:06:41,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:41,082 INFO L225 Difference]: With dead ends: 70 [2018-07-23 18:06:41,082 INFO L226 Difference]: Without dead ends: 42 [2018-07-23 18:06:41,083 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:06:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-23 18:06:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-07-23 18:06:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 18:06:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-07-23 18:06:41,092 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 25 [2018-07-23 18:06:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:41,092 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-07-23 18:06:41,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 18:06:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-07-23 18:06:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 18:06:41,094 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:41,094 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:41,094 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1518951494, now seen corresponding path program 1 times [2018-07-23 18:06:41,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:41,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:41,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:41,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:41,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:06:41,438 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:41,438 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:41,438 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-07-23 18:06:41,438 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-07-23 18:06:41,443 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:06:41,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:06:41,529 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:06:41,530 INFO L272 AbstractInterpreter]: Visited 15 different actions 45 times. Merged at 4 different actions 20 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 14 variables. [2018-07-23 18:06:41,569 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:06:41,654 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 38.89% of their original sizes. [2018-07-23 18:06:41,655 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:06:42,117 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:06:42,118 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:06:42,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-07-23 18:06:42,118 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:42,118 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 18:06:42,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 18:06:42,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:06:42,119 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 9 states. [2018-07-23 18:06:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:43,204 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2018-07-23 18:06:43,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 18:06:43,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-23 18:06:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:43,207 INFO L225 Difference]: With dead ends: 95 [2018-07-23 18:06:43,208 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 18:06:43,208 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:06:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 18:06:43,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2018-07-23 18:06:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 18:06:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2018-07-23 18:06:43,233 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 29 [2018-07-23 18:06:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:43,233 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2018-07-23 18:06:43,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 18:06:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2018-07-23 18:06:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-23 18:06:43,235 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:43,235 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:43,236 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2088517893, now seen corresponding path program 1 times [2018-07-23 18:06:43,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:43,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:43,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:43,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:43,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-23 18:06:43,357 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:43,357 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:43,357 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-07-23 18:06:43,358 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [45], [49], [52], [65], [69], [73], [76], [78], [82], [84], [88], [92], [97], [106], [107], [108], [110] [2018-07-23 18:06:43,360 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:06:43,360 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:06:43,391 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:06:43,392 INFO L272 AbstractInterpreter]: Visited 18 different actions 48 times. Merged at 4 different actions 20 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 16 variables. [2018-07-23 18:06:43,409 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:06:43,483 INFO L232 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 41.51% of their original sizes. [2018-07-23 18:06:43,483 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:06:44,142 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:06:44,143 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:06:44,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-07-23 18:06:44,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:44,144 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 18:06:44,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 18:06:44,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:06:44,144 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 10 states. [2018-07-23 18:06:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:45,214 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2018-07-23 18:06:45,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 18:06:45,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-07-23 18:06:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:45,216 INFO L225 Difference]: With dead ends: 107 [2018-07-23 18:06:45,216 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 18:06:45,217 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2018-07-23 18:06:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 18:06:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2018-07-23 18:06:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 18:06:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2018-07-23 18:06:45,236 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 51 [2018-07-23 18:06:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:45,236 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2018-07-23 18:06:45,236 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 18:06:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2018-07-23 18:06:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-23 18:06:45,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:45,238 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:45,238 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:45,239 INFO L82 PathProgramCache]: Analyzing trace with hash -648354674, now seen corresponding path program 1 times [2018-07-23 18:06:45,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:45,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:45,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:45,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:45,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-23 18:06:45,352 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:45,352 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:45,352 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-07-23 18:06:45,353 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [45], [49], [52], [54], [57], [61], [65], [69], [73], [76], [78], [82], [84], [88], [92], [97], [106], [107], [108], [110] [2018-07-23 18:06:45,356 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:06:45,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:06:45,605 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-23 18:06:45,605 INFO L272 AbstractInterpreter]: Visited 35 different actions 310 times. Merged at 16 different actions 213 times. Widened at 5 different actions 41 times. Found 15 fixpoints after 7 different actions. Largest state had 17 variables. [2018-07-23 18:06:45,614 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-23 18:06:45,615 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:45,615 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:45,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:45,629 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:06:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:45,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-23 18:06:45,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-23 18:06:46,353 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:46,353 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:46,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:46,371 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:06:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:46,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-23 18:06:46,521 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-23 18:06:46,825 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-23 18:06:46,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 4] total 14 [2018-07-23 18:06:46,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:46,826 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 18:06:46,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 18:06:46,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:06:46,827 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 4 states. [2018-07-23 18:06:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:47,027 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2018-07-23 18:06:47,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:06:47,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-07-23 18:06:47,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:47,029 INFO L225 Difference]: With dead ends: 100 [2018-07-23 18:06:47,029 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 18:06:47,030 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:06:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 18:06:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-23 18:06:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 18:06:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-07-23 18:06:47,047 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 55 [2018-07-23 18:06:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:47,048 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-07-23 18:06:47,048 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 18:06:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-07-23 18:06:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-23 18:06:47,049 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:47,050 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:47,050 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:47,050 INFO L82 PathProgramCache]: Analyzing trace with hash -993215643, now seen corresponding path program 2 times [2018-07-23 18:06:47,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:47,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:47,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:47,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:47,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-23 18:06:47,222 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:47,222 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:47,223 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:47,223 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:47,223 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:47,223 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:47,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:06:47,232 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:06:47,291 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:06:47,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:47,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-23 18:06:47,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-23 18:06:47,493 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:47,493 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:47,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:06:47,531 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:06:47,651 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:06:47,651 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:47,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-23 18:06:47,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-23 18:06:47,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:06:47,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 16 [2018-07-23 18:06:47,865 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:06:47,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 18:06:47,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 18:06:47,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-07-23 18:06:47,868 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 8 states. [2018-07-23 18:06:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:48,270 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2018-07-23 18:06:48,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 18:06:48,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-07-23 18:06:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:48,271 INFO L225 Difference]: With dead ends: 123 [2018-07-23 18:06:48,271 INFO L226 Difference]: Without dead ends: 76 [2018-07-23 18:06:48,272 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-07-23 18:06:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-23 18:06:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2018-07-23 18:06:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 18:06:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2018-07-23 18:06:48,291 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 59 [2018-07-23 18:06:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:48,291 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2018-07-23 18:06:48,291 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 18:06:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2018-07-23 18:06:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-23 18:06:48,295 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:48,295 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:48,295 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:48,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1657981116, now seen corresponding path program 3 times [2018-07-23 18:06:48,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:48,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:48,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:06:48,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:48,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:48,617 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-07-23 18:06:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-23 18:06:48,637 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:48,637 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:48,637 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:48,637 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:48,637 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:48,637 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:48,655 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:06:48,655 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:06:48,699 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-23 18:06:48,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:48,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-23 18:06:48,909 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-23 18:06:48,983 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:48,983 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:49,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:06:49,000 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:06:49,461 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-07-23 18:06:49,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:49,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-23 18:06:49,475 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-23 18:06:49,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:06:49,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 13 [2018-07-23 18:06:49,498 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:06:49,498 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 18:06:49,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 18:06:49,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-07-23 18:06:49,499 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 10 states. [2018-07-23 18:06:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:49,940 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2018-07-23 18:06:49,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 18:06:49,941 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2018-07-23 18:06:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:49,944 INFO L225 Difference]: With dead ends: 177 [2018-07-23 18:06:49,944 INFO L226 Difference]: Without dead ends: 130 [2018-07-23 18:06:49,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2018-07-23 18:06:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-23 18:06:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 88. [2018-07-23 18:06:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-23 18:06:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2018-07-23 18:06:49,967 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 63 [2018-07-23 18:06:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:49,967 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2018-07-23 18:06:49,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 18:06:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2018-07-23 18:06:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 18:06:49,969 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:49,969 INFO L353 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:49,969 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:49,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1757615163, now seen corresponding path program 4 times [2018-07-23 18:06:49,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:49,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:49,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:06:49,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:49,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-07-23 18:06:50,270 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:50,270 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:50,270 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:50,270 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:50,271 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:50,271 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:50,278 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 18:06:50,278 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-23 18:06:50,302 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 18:06:50,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:50,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-23 18:06:50,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-23 18:06:50,480 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:50,480 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:50,496 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 18:06:50,496 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-23 18:06:50,549 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 18:06:50,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:50,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-23 18:06:50,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-23 18:06:50,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:06:50,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9, 9, 9] total 16 [2018-07-23 18:06:50,634 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:06:50,634 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 18:06:50,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 18:06:50,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-23 18:06:50,635 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 13 states. [2018-07-23 18:06:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:51,025 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-07-23 18:06:51,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 18:06:51,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2018-07-23 18:06:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:51,027 INFO L225 Difference]: With dead ends: 240 [2018-07-23 18:06:51,027 INFO L226 Difference]: Without dead ends: 132 [2018-07-23 18:06:51,028 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 319 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2018-07-23 18:06:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-23 18:06:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 104. [2018-07-23 18:06:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-23 18:06:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2018-07-23 18:06:51,051 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 84 [2018-07-23 18:06:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:51,051 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2018-07-23 18:06:51,052 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 18:06:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2018-07-23 18:06:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 18:06:51,053 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:51,054 INFO L353 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:51,054 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1643955771, now seen corresponding path program 5 times [2018-07-23 18:06:51,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:51,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:51,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:06:51,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:51,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-07-23 18:06:51,315 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:51,315 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:51,315 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:51,315 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:51,315 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:51,315 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:51,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-23 18:06:51,323 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:06:51,350 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-07-23 18:06:51,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:51,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2018-07-23 18:06:51,396 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2018-07-23 18:06:51,670 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:06:51,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [8] total 10 [2018-07-23 18:06:51,671 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:06:51,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 18:06:51,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 18:06:51,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:06:51,672 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand 4 states. [2018-07-23 18:06:51,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:51,878 INFO L93 Difference]: Finished difference Result 195 states and 230 transitions. [2018-07-23 18:06:51,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 18:06:51,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-07-23 18:06:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:51,879 INFO L225 Difference]: With dead ends: 195 [2018-07-23 18:06:51,879 INFO L226 Difference]: Without dead ends: 104 [2018-07-23 18:06:51,880 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-23 18:06:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-23 18:06:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-23 18:06:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-23 18:06:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2018-07-23 18:06:51,903 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 100 [2018-07-23 18:06:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:51,903 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2018-07-23 18:06:51,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 18:06:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2018-07-23 18:06:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 18:06:51,905 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:51,905 INFO L353 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:51,905 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 649262073, now seen corresponding path program 6 times [2018-07-23 18:06:51,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:51,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:51,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:06:51,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:51,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-07-23 18:06:52,112 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:52,112 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:52,112 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:52,112 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:52,112 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:52,112 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:52,122 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-23 18:06:52,122 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-23 18:06:52,204 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-07-23 18:06:52,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:52,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-23 18:06:52,358 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-23 18:06:52,576 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:52,576 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:52,593 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-23 18:06:52,593 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-23 18:06:57,405 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-07-23 18:06:57,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:57,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-23 18:06:57,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-23 18:06:57,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:06:57,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-07-23 18:06:57,493 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:06:57,493 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 18:06:57,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 18:06:57,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156 [2018-07-23 18:06:57,494 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand 12 states. [2018-07-23 18:06:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:57,860 INFO L93 Difference]: Finished difference Result 252 states and 298 transitions. [2018-07-23 18:06:57,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 18:06:57,861 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2018-07-23 18:06:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:57,862 INFO L225 Difference]: With dead ends: 252 [2018-07-23 18:06:57,863 INFO L226 Difference]: Without dead ends: 172 [2018-07-23 18:06:57,864 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 386 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2018-07-23 18:06:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-23 18:06:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2018-07-23 18:06:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-23 18:06:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 165 transitions. [2018-07-23 18:06:57,890 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 165 transitions. Word has length 100 [2018-07-23 18:06:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:57,891 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 165 transitions. [2018-07-23 18:06:57,891 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 18:06:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 165 transitions. [2018-07-23 18:06:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 18:06:57,893 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:57,893 INFO L353 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:57,894 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1599409856, now seen corresponding path program 7 times [2018-07-23 18:06:57,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:57,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:57,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:06:57,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:57,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 210 proven. 18 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-23 18:06:58,077 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:58,078 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:58,078 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:58,078 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:58,078 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:58,078 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:58,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:58,087 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:06:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:58,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 210 proven. 18 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-23 18:06:58,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 210 proven. 18 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-23 18:06:58,395 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:58,395 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:58,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:58,412 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:06:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:58,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 210 proven. 18 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-23 18:06:58,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 210 proven. 18 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-23 18:06:58,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:06:58,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 16 [2018-07-23 18:06:58,587 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:06:58,588 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 18:06:58,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 18:06:58,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=137, Unknown=0, NotChecked=0, Total=240 [2018-07-23 18:06:58,589 INFO L87 Difference]: Start difference. First operand 142 states and 165 transitions. Second operand 11 states. [2018-07-23 18:06:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:58,684 INFO L93 Difference]: Finished difference Result 269 states and 325 transitions. [2018-07-23 18:06:58,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 18:06:58,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 138 [2018-07-23 18:06:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:58,692 INFO L225 Difference]: With dead ends: 269 [2018-07-23 18:06:58,692 INFO L226 Difference]: Without dead ends: 172 [2018-07-23 18:06:58,693 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=137, Unknown=0, NotChecked=0, Total=240 [2018-07-23 18:06:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-23 18:06:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2018-07-23 18:06:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-23 18:06:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2018-07-23 18:06:58,727 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 138 [2018-07-23 18:06:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:58,728 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2018-07-23 18:06:58,728 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 18:06:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2018-07-23 18:06:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 18:06:58,730 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:58,730 INFO L353 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:58,730 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:58,730 INFO L82 PathProgramCache]: Analyzing trace with hash -862665129, now seen corresponding path program 8 times [2018-07-23 18:06:58,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:58,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:58,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:06:58,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:58,732 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 338 proven. 32 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2018-07-23 18:06:58,930 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:58,930 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:58,930 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:58,930 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:58,930 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:58,930 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:58,938 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:06:58,938 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:06:58,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:06:58,999 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:59,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 338 proven. 32 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2018-07-23 18:06:59,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 338 proven. 32 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2018-07-23 18:06:59,254 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:59,254 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:06:59,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 18:06:59,270 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:06:59,447 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 18:06:59,447 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:59,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:06:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 338 proven. 32 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2018-07-23 18:06:59,479 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:06:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 338 proven. 32 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2018-07-23 18:06:59,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:06:59,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 19 [2018-07-23 18:06:59,512 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:06:59,513 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 18:06:59,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 18:06:59,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2018-07-23 18:06:59,514 INFO L87 Difference]: Start difference. First operand 162 states and 190 transitions. Second operand 13 states. [2018-07-23 18:06:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:06:59,658 INFO L93 Difference]: Finished difference Result 305 states and 370 transitions. [2018-07-23 18:06:59,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 18:06:59,658 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 158 [2018-07-23 18:06:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:06:59,661 INFO L225 Difference]: With dead ends: 305 [2018-07-23 18:06:59,661 INFO L226 Difference]: Without dead ends: 192 [2018-07-23 18:06:59,662 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2018-07-23 18:06:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-23 18:06:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 182. [2018-07-23 18:06:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-23 18:06:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2018-07-23 18:06:59,689 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 158 [2018-07-23 18:06:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:06:59,690 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2018-07-23 18:06:59,690 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 18:06:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2018-07-23 18:06:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 18:06:59,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:06:59,692 INFO L353 BasicCegarLoop]: trace histogram [30, 25, 25, 25, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:06:59,692 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:06:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash 409102830, now seen corresponding path program 9 times [2018-07-23 18:06:59,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:06:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:59,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:06:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:06:59,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:06:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:06:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 498 proven. 50 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2018-07-23 18:06:59,869 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:59,869 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:06:59,869 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:06:59,869 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:06:59,869 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:06:59,869 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:06:59,877 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:06:59,878 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:06:59,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-07-23 18:06:59,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:06:59,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-23 18:07:00,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-23 18:07:00,148 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:00,148 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:07:00,166 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 18:07:00,166 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-23 18:07:01,385 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-07-23 18:07:01,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:01,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-23 18:07:01,423 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-23 18:07:01,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:07:01,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7, 7, 7] total 18 [2018-07-23 18:07:01,471 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:07:01,471 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 18:07:01,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 18:07:01,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-07-23 18:07:01,472 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand 13 states. [2018-07-23 18:07:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:02,565 INFO L93 Difference]: Finished difference Result 363 states and 442 transitions. [2018-07-23 18:07:02,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 18:07:02,568 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 178 [2018-07-23 18:07:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:02,569 INFO L225 Difference]: With dead ends: 363 [2018-07-23 18:07:02,569 INFO L226 Difference]: Without dead ends: 234 [2018-07-23 18:07:02,571 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=739, Invalid=1423, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 18:07:02,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-23 18:07:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 206. [2018-07-23 18:07:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-23 18:07:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 244 transitions. [2018-07-23 18:07:02,602 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 244 transitions. Word has length 178 [2018-07-23 18:07:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:02,603 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 244 transitions. [2018-07-23 18:07:02,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 18:07:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 244 transitions. [2018-07-23 18:07:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 18:07:02,606 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:02,606 INFO L353 BasicCegarLoop]: trace histogram [35, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:02,606 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:02,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1059460926, now seen corresponding path program 10 times [2018-07-23 18:07:02,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:02,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:07:02,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:02,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 690 proven. 72 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2018-07-23 18:07:03,502 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:03,502 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:07:03,502 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:07:03,502 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:07:03,503 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:03,503 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:07:03,517 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 18:07:03,517 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-23 18:07:03,593 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 18:07:03,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:03,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 60 proven. 630 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2018-07-23 18:07:03,812 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 60 proven. 630 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2018-07-23 18:07:04,014 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:04,014 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:07:04,032 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 18:07:04,032 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-23 18:07:04,175 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 18:07:04,175 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:04,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 60 proven. 630 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2018-07-23 18:07:04,231 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 60 proven. 630 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2018-07-23 18:07:04,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:07:04,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14, 14, 14] total 29 [2018-07-23 18:07:04,353 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:07:04,353 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 18:07:04,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 18:07:04,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2018-07-23 18:07:04,354 INFO L87 Difference]: Start difference. First operand 206 states and 244 transitions. Second operand 22 states. [2018-07-23 18:07:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:07:06,151 INFO L93 Difference]: Finished difference Result 446 states and 545 transitions. [2018-07-23 18:07:06,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 18:07:06,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 202 [2018-07-23 18:07:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:07:06,154 INFO L225 Difference]: With dead ends: 446 [2018-07-23 18:07:06,154 INFO L226 Difference]: Without dead ends: 297 [2018-07-23 18:07:06,157 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 784 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1487, Invalid=4993, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 18:07:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-23 18:07:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 230. [2018-07-23 18:07:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-23 18:07:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 273 transitions. [2018-07-23 18:07:06,189 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 273 transitions. Word has length 202 [2018-07-23 18:07:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:07:06,189 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 273 transitions. [2018-07-23 18:07:06,189 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 18:07:06,190 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 273 transitions. [2018-07-23 18:07:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 18:07:06,192 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:07:06,192 INFO L353 BasicCegarLoop]: trace histogram [40, 35, 35, 35, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:07:06,192 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:07:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1383221134, now seen corresponding path program 11 times [2018-07-23 18:07:06,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:07:06,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:06,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:07:06,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:07:06,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:07:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:07:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 914 proven. 98 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2018-07-23 18:07:06,380 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:06,380 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:07:06,380 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:07:06,380 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:07:06,380 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:06,380 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:07:06,388 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-23 18:07:06,388 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:07:10,108 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-07-23 18:07:10,108 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:07:10,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:07:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 1602 proven. 98 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-07-23 18:07:11,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:07:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 1376 proven. 324 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-07-23 18:07:11,349 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:07:11,349 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-23 18:07:11,364 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-23 18:07:11,365 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-23 18:09:03,863 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-07-23 18:09:03,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:09:03,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:09:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 1602 proven. 98 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-07-23 18:09:03,947 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:09:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2890 backedges. 1376 proven. 324 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-07-23 18:09:04,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-23 18:09:04,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 28 [2018-07-23 18:09:04,045 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-23 18:09:04,046 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 18:09:04,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 18:09:04,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=429, Unknown=0, NotChecked=0, Total=756 [2018-07-23 18:09:04,046 INFO L87 Difference]: Start difference. First operand 230 states and 273 transitions. Second operand 19 states. [2018-07-23 18:09:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:09:04,179 INFO L93 Difference]: Finished difference Result 429 states and 521 transitions. [2018-07-23 18:09:04,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 18:09:04,180 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 226 [2018-07-23 18:09:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:09:04,182 INFO L225 Difference]: With dead ends: 429 [2018-07-23 18:09:04,182 INFO L226 Difference]: Without dead ends: 260 [2018-07-23 18:09:04,183 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=429, Unknown=0, NotChecked=0, Total=756 [2018-07-23 18:09:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-23 18:09:04,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 250. [2018-07-23 18:09:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-23 18:09:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 298 transitions. [2018-07-23 18:09:04,219 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 298 transitions. Word has length 226 [2018-07-23 18:09:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:09:04,219 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 298 transitions. [2018-07-23 18:09:04,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 18:09:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 298 transitions. [2018-07-23 18:09:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-23 18:09:04,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:09:04,221 INFO L353 BasicCegarLoop]: trace histogram [45, 40, 40, 40, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:09:04,221 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:09:04,221 INFO L82 PathProgramCache]: Analyzing trace with hash -599863387, now seen corresponding path program 12 times [2018-07-23 18:09:04,221 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:09:04,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:09:04,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 18:09:04,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:09:04,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:09:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:09:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3680 backedges. 1170 proven. 128 refuted. 0 times theorem prover too weak. 2382 trivial. 0 not checked. [2018-07-23 18:09:04,650 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:09:04,650 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:09:04,650 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-23 18:09:04,650 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:09:04,650 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:09:04,650 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:09:04,660 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-23 18:09:04,660 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-23 18:09:04,733 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-07-23 18:09:04,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 18:09:04,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:09:04,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-07-23 18:09:04,816 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:04,818 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 74 [2018-07-23 18:09:04,841 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:04,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 82 [2018-07-23 18:09:04,863 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 84 [2018-07-23 18:09:04,882 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2018-07-23 18:09:04,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 88 [2018-07-23 18:09:04,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-07-23 18:09:04,953 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-07-23 18:09:04,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-07-23 18:09:04,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-07-23 18:09:05,013 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-07-23 18:09:05,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-07-23 18:09:05,046 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-07-23 18:09:05,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 104 [2018-07-23 18:09:05,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 106 [2018-07-23 18:09:05,093 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2018-07-23 18:09:05,113 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 110 [2018-07-23 18:09:05,123 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 112 [2018-07-23 18:09:05,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 114 [2018-07-23 18:09:05,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 113 [2018-07-23 18:09:05,168 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,240 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,310 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,380 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,448 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,513 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,575 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,637 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,698 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,757 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,816 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,878 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:05,945 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,057 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,122 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,187 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,248 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,310 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,375 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,435 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,517 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-07-23 18:09:06,524 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 68 [2018-07-23 18:09:06,531 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 70 [2018-07-23 18:09:06,554 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 72 [2018-07-23 18:09:06,559 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 74 [2018-07-23 18:09:06,565 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2018-07-23 18:09:06,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 78 [2018-07-23 18:09:06,606 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 80 [2018-07-23 18:09:06,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 82 [2018-07-23 18:09:06,634 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 84 [2018-07-23 18:09:06,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2018-07-23 18:09:06,648 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 88 [2018-07-23 18:09:06,657 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-07-23 18:09:06,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-07-23 18:09:06,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-07-23 18:09:06,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-07-23 18:09:06,695 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-07-23 18:09:06,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-07-23 18:09:06,749 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-07-23 18:09:06,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 101 [2018-07-23 18:09:06,779 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,865 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:06,944 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,002 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,057 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,115 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,174 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,229 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,287 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,344 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,397 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,454 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,512 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,574 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,628 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,686 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,742 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,794 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,850 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:07,908 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-07-23 18:09:08,081 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:08,082 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 74 [2018-07-23 18:09:08,105 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:08,106 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:08,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 88 [2018-07-23 18:09:08,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-07-23 18:09:08,121 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-07-23 18:09:08,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-07-23 18:09:08,155 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-07-23 18:09:08,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-07-23 18:09:08,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-07-23 18:09:08,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-07-23 18:09:08,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 104 [2018-07-23 18:09:08,245 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 106 [2018-07-23 18:09:08,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2018-07-23 18:09:08,287 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 110 [2018-07-23 18:09:08,307 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 112 [2018-07-23 18:09:08,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 114 [2018-07-23 18:09:08,352 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 116 [2018-07-23 18:09:08,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 118 [2018-07-23 18:09:08,395 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 120 [2018-07-23 18:09:08,414 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 119 [2018-07-23 18:09:08,415 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,518 INFO L267 ElimStorePlain]: Start of recursive call 60: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,568 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,619 INFO L267 ElimStorePlain]: Start of recursive call 58: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,672 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,725 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,777 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,830 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,879 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,931 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:08,986 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,040 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,094 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,308 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,372 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,422 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,494 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,545 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,597 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,648 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,886 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:09,887 INFO L202 ElimStorePlain]: Needed 61 recursive calls to eliminate 3 variables, input treesize:193, output treesize:304 [2018-07-23 18:09:10,452 WARN L169 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-07-23 18:09:10,917 WARN L169 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2018-07-23 18:09:10,942 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 27 [2018-07-23 18:09:10,943 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:11,214 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-07-23 18:09:11,214 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:323, output treesize:637 [2018-07-23 18:09:12,123 WARN L169 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-07-23 18:09:14,264 WARN L169 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 173 [2018-07-23 18:09:15,425 WARN L169 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 161 [2018-07-23 18:09:15,829 WARN L169 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-07-23 18:09:16,187 WARN L169 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-07-23 18:09:16,214 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:16,215 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:16,216 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:16,220 INFO L682 Elim1Store]: detected equality via solver [2018-07-23 18:09:16,253 INFO L700 Elim1Store]: detected not equals via solver [2018-07-23 18:09:16,300 INFO L303 Elim1Store]: Index analysis took 107 ms [2018-07-23 18:09:16,302 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 79 [2018-07-23 18:09:16,303 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-23 18:09:16,614 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-07-23 18:09:16,614 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:344, output treesize:339 [2018-07-23 18:09:17,020 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-07-23 18:09:17,367 WARN L169 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2018-07-23 18:09:17,378 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-23 18:09:17,378 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-23 18:09:17,380 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-23 18:09:17,380 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:342, output treesize:1 [2018-07-23 18:09:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3680 backedges. 1437 proven. 5 refuted. 0 times theorem prover too weak. 2238 trivial. 0 not checked. [2018-07-23 18:09:18,250 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-23 18:09:19,493 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 113 [2018-07-23 18:09:21,576 WARN L169 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 282 DAG size of output: 232 [2018-07-23 18:09:21,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 99 [2018-07-23 18:09:21,643 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:21,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 58 [2018-07-23 18:09:21,660 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:21,762 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 92 [2018-07-23 18:09:21,772 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:21,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 94 [2018-07-23 18:09:21,877 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:21,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2018-07-23 18:09:21,908 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:21,917 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 51 [2018-07-23 18:09:21,918 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:21,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 89 [2018-07-23 18:09:21,950 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 76 [2018-07-23 18:09:22,011 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2018-07-23 18:09:22,021 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:22,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 79 [2018-07-23 18:09:22,052 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,078 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 85 [2018-07-23 18:09:22,082 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,132 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 104 [2018-07-23 18:09:22,137 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 57 [2018-07-23 18:09:22,176 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:22,203 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 80 [2018-07-23 18:09:22,207 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2018-07-23 18:09:22,217 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:22,243 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 96 [2018-07-23 18:09:22,248 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 99 [2018-07-23 18:09:22,277 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,384 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 103 [2018-07-23 18:09:22,390 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,528 INFO L303 Elim1Store]: Index analysis took 137 ms [2018-07-23 18:09:22,639 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 95 [2018-07-23 18:09:22,645 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,682 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2018-07-23 18:09:22,683 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:22,712 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 102 [2018-07-23 18:09:22,717 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 72 [2018-07-23 18:09:22,748 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,883 INFO L303 Elim1Store]: Index analysis took 134 ms [2018-07-23 18:09:22,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 90 [2018-07-23 18:09:22,906 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:22,932 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 85 [2018-07-23 18:09:22,936 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:26,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 79 [2018-07-23 18:09:26,232 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:26,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 94 [2018-07-23 18:09:26,283 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:26,303 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:26,460 INFO L303 Elim1Store]: Index analysis took 156 ms [2018-07-23 18:09:26,682 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 81 [2018-07-23 18:09:26,686 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:29,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 99 [2018-07-23 18:09:29,499 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 32 xjuncts. [2018-07-23 18:09:29,642 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 122 [2018-07-23 18:09:29,642 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:29,812 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:29,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 50 [2018-07-23 18:09:29,899 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 4 xjuncts. [2018-07-23 18:09:29,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 97 [2018-07-23 18:09:29,954 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 32 xjuncts. [2018-07-23 18:09:42,203 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2018-07-23 18:09:42,204 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:42,358 INFO L303 Elim1Store]: Index analysis took 153 ms [2018-07-23 18:09:42,405 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 94 [2018-07-23 18:09:42,406 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:42,421 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:42,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 79 [2018-07-23 18:09:42,475 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:42,497 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 81 [2018-07-23 18:09:42,500 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:43,841 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2018-07-23 18:09:43,844 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:43,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 81 [2018-07-23 18:09:43,871 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:44,568 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 90 [2018-07-23 18:09:44,568 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:44,579 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:44,629 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 101 [2018-07-23 18:09:44,630 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:44,644 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:44,695 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 103 [2018-07-23 18:09:44,695 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:44,710 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:47,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 68 [2018-07-23 18:09:47,036 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 4 xjuncts. [2018-07-23 18:09:47,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2018-07-23 18:09:47,044 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:47,063 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 66 [2018-07-23 18:09:47,065 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 4 xjuncts. [2018-07-23 18:09:47,467 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, 7 dim-1 vars, End of recursive call: and 23 xjuncts. [2018-07-23 18:09:47,481 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 65 [2018-07-23 18:09:47,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 114 [2018-07-23 18:09:47,617 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:47,634 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:47,662 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 68 [2018-07-23 18:09:47,664 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:47,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 67 [2018-07-23 18:09:47,690 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:47,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 107 [2018-07-23 18:09:47,740 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:47,755 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:47,781 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 70 [2018-07-23 18:09:47,784 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:47,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 100 [2018-07-23 18:09:47,843 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:47,857 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:47,908 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 113 [2018-07-23 18:09:47,909 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:47,922 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:47,973 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 94 [2018-07-23 18:09:47,974 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:47,990 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:48,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 69 [2018-07-23 18:09:48,098 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 8 xjuncts. [2018-07-23 18:09:48,149 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 112 [2018-07-23 18:09:48,149 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:48,164 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:48,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 105 [2018-07-23 18:09:48,216 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:48,234 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:48,287 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2018-07-23 18:09:48,288 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:48,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 101 [2018-07-23 18:09:48,341 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:48,355 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:56,656 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2018-07-23 18:09:56,657 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:56,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44 [2018-07-23 18:09:56,670 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:56,682 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 45 [2018-07-23 18:09:56,682 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:56,953 INFO L267 ElimStorePlain]: Start of recursive call 46: 2 dim-1 vars, End of recursive call: and 16 xjuncts. [2018-07-23 18:09:56,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 62 [2018-07-23 18:09:57,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 93 [2018-07-23 18:09:57,143 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-23 18:09:57,156 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 64 xjuncts. [2018-07-23 18:09:57,414 INFO L303 Elim1Store]: Index analysis took 256 ms [2018-07-23 18:09:57,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 83 [2018-07-23 18:09:57,624 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 32 xjuncts. [2018-07-23 18:09:57,738 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 134 [2018-07-23 18:09:57,739 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:57,928 INFO L267 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:58,038 INFO L303 Elim1Store]: Index analysis took 108 ms [2018-07-23 18:09:58,091 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 71 treesize of output 135 [2018-07-23 18:09:58,091 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:58,254 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:58,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 59 treesize of output 129 [2018-07-23 18:09:58,354 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:58,483 INFO L267 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:58,574 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 54 treesize of output 124 [2018-07-23 18:09:58,574 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:58,701 INFO L267 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:58,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 84 [2018-07-23 18:09:58,769 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 32 xjuncts. [2018-07-23 18:09:58,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 133 [2018-07-23 18:09:58,848 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:59,003 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:59,099 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 55 treesize of output 125 [2018-07-23 18:09:59,100 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:59,233 INFO L267 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 512 xjuncts. [2018-07-23 18:09:59,302 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 81 [2018-07-23 18:09:59,308 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 32 xjuncts. [2018-07-23 18:09:59,316 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 41 [2018-07-23 18:09:59,317 INFO L267 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 2 xjuncts. [2018-07-23 18:09:59,364 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 82 [2018-07-23 18:09:59,370 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 32 xjuncts. [2018-07-23 18:09:59,449 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 131 [2018-07-23 18:09:59,449 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-07-23 18:09:59,588 INFO L267 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 512 xjuncts. Received shutdown request... [2018-07-23 18:10:51,192 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 18:10:51,393 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:10:51,394 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 18:10:51,399 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 18:10:51,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:10:51 BoogieIcfgContainer [2018-07-23 18:10:51,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:10:51,400 INFO L168 Benchmark]: Toolchain (without parser) took 253962.94 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 473.4 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -425.3 MB). Peak memory consumption was 806.4 MB. Max. memory is 7.1 GB. [2018-07-23 18:10:51,401 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 18:10:51,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.07 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. [2018-07-23 18:10:51,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.90 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. [2018-07-23 18:10:51,402 INFO L168 Benchmark]: Boogie Preprocessor took 36.37 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. [2018-07-23 18:10:51,402 INFO L168 Benchmark]: RCFGBuilder took 708.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-07-23 18:10:51,402 INFO L168 Benchmark]: TraceAbstraction took 252856.28 ms. Allocated memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: -264.8 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 337.5 MB). Peak memory consumption was 831.0 MB. Max. memory is 7.1 GB. [2018-07-23 18:10:51,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.07 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 33.90 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 36.37 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 708.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252856.28 ms. Allocated memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: -264.8 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 337.5 MB). Peak memory consumption was 831.0 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 247 with TraceHistMax 45, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 3483. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. TIMEOUT Result, 252.7s OverallTime, 17 OverallIterations, 45 TraceHistogramMax, 8.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 513 SDtfs, 2299 SDslu, 1534 SDs, 0 SdLazy, 1489 SolverSat, 581 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 5539 GetRequests, 5206 SyntacticMatches, 32 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3438 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9633228291316528 AbsIntWeakeningRatio, 0.5882352941176471 AbsIntAvgWeakeningVarsNumRemoved, 14.303921568627452 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 263 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 124.0s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 4133 NumberOfCodeBlocks, 3756 NumberOfCodeBlocksAsserted, 129 NumberOfCheckSat, 6701 ConstructedInterpolants, 0 QuantifiedInterpolants, 2340324 SizeOfPredicates, 50 NumberOfNonLiveVariables, 4869 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 58 InterpolantComputations, 5 PerfectInterpolantSequences, 40849/45857 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-10-51-411.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-10-51-411.csv Completed graceful shutdown