java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-20 21:43:05,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-20 21:43:05,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-20 21:43:05,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-20 21:43:05,121 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-20 21:43:05,122 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-20 21:43:05,123 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-20 21:43:05,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-20 21:43:05,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-20 21:43:05,128 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-20 21:43:05,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-20 21:43:05,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-20 21:43:05,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-20 21:43:05,134 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-20 21:43:05,136 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-20 21:43:05,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-20 21:43:05,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-20 21:43:05,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-20 21:43:05,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-20 21:43:05,153 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-20 21:43:05,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-20 21:43:05,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-20 21:43:05,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-20 21:43:05,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-20 21:43:05,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-20 21:43:05,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-20 21:43:05,206 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-20 21:43:05,206 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-20 21:43:05,206 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-20 21:43:05,206 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-20 21:43:05,206 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-20 21:43:05,206 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-20 21:43:05,208 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-20 21:43:05,208 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-20 21:43:05,208 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-20 21:43:05,208 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-20 21:43:05,209 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-20 21:43:05,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-20 21:43:05,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-20 21:43:05,209 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-20 21:43:05,210 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-20 21:43:05,210 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-20 21:43:05,210 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-20 21:43:05,210 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-20 21:43:05,210 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-20 21:43:05,210 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-20 21:43:05,211 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-20 21:43:05,212 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-20 21:43:05,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-20 21:43:05,213 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-20 21:43:05,213 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-20 21:43:05,213 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-20 21:43:05,213 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-20 21:43:05,213 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-20 21:43:05,214 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-20 21:43:05,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-20 21:43:05,214 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-20 21:43:05,214 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-20 21:43:05,214 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-20 21:43:05,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-20 21:43:05,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-20 21:43:05,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-20 21:43:05,282 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-20 21:43:05,282 INFO L276 PluginConnector]: CDTParser initialized [2018-07-20 21:43:05,283 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-07-20 21:43:05,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/12e502f7b/2ece829a842741fdad18780cdff9ce51/FLAGedc7ef90d [2018-07-20 21:43:05,807 INFO L276 CDTParser]: Found 1 translation units. [2018-07-20 21:43:05,807 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-07-20 21:43:05,814 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/12e502f7b/2ece829a842741fdad18780cdff9ce51/FLAGedc7ef90d [2018-07-20 21:43:05,826 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/12e502f7b/2ece829a842741fdad18780cdff9ce51 [2018-07-20 21:43:05,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-20 21:43:05,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-20 21:43:05,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-20 21:43:05,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-20 21:43:05,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-20 21:43:05,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:43:05" (1/1) ... [2018-07-20 21:43:05,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ad868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:05, skipping insertion in model container [2018-07-20 21:43:05,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:43:05" (1/1) ... [2018-07-20 21:43:06,044 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-20 21:43:06,089 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-20 21:43:06,107 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-20 21:43:06,114 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-20 21:43:06,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06 WrapperNode [2018-07-20 21:43:06,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-20 21:43:06,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-20 21:43:06,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-20 21:43:06,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-20 21:43:06,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-20 21:43:06,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-20 21:43:06,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-20 21:43:06,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-20 21:43:06,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... [2018-07-20 21:43:06,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-20 21:43:06,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-20 21:43:06,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-20 21:43:06,187 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-20 21:43:06,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (1/1) ... No working directory specified, using /storage/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 [2018-07-20 21:43:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-20 21:43:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-20 21:43:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert [2018-07-20 21:43:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert [2018-07-20 21:43:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-20 21:43:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-20 21:43:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-20 21:43:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-20 21:43:06,667 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-20 21:43:06,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:43:06 BoogieIcfgContainer [2018-07-20 21:43:06,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-20 21:43:06,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-20 21:43:06,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-20 21:43:06,679 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-20 21:43:06,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:43:05" (1/3) ... [2018-07-20 21:43:06,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6265f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:43:06, skipping insertion in model container [2018-07-20 21:43:06,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:43:06" (2/3) ... [2018-07-20 21:43:06,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6265f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:43:06, skipping insertion in model container [2018-07-20 21:43:06,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:43:06" (3/3) ... [2018-07-20 21:43:06,692 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call1_true-termination.i [2018-07-20 21:43:06,707 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-20 21:43:06,719 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-20 21:43:06,765 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-20 21:43:06,766 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-20 21:43:06,766 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-20 21:43:06,766 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-20 21:43:06,766 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-20 21:43:06,766 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-20 21:43:06,767 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-20 21:43:06,767 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-20 21:43:06,767 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-20 21:43:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-07-20 21:43:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-20 21:43:06,789 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:06,790 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:06,791 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1189535701, now seen corresponding path program 1 times [2018-07-20 21:43:06,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:06,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:06,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:06,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:06,857 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:06,919 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-20 21:43:06,920 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-20 21:43:06,920 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-20 21:43:06,923 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-20 21:43:06,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-20 21:43:06,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-20 21:43:06,942 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-07-20 21:43:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:06,970 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2018-07-20 21:43:06,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-20 21:43:06,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-07-20 21:43:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:06,989 INFO L225 Difference]: With dead ends: 42 [2018-07-20 21:43:06,990 INFO L226 Difference]: Without dead ends: 21 [2018-07-20 21:43:06,995 INFO L578 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 [2018-07-20 21:43:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-20 21:43:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-20 21:43:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-20 21:43:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-07-20 21:43:07,042 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2018-07-20 21:43:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:07,043 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-07-20 21:43:07,044 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-20 21:43:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-07-20 21:43:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-20 21:43:07,045 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:07,045 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:07,045 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:07,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2089413066, now seen corresponding path program 1 times [2018-07-20 21:43:07,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:07,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:07,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:07,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:07,047 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:07,127 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-20 21:43:07,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-20 21:43:07,128 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-20 21:43:07,130 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-20 21:43:07,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-20 21:43:07,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-20 21:43:07,131 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2018-07-20 21:43:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:07,250 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-07-20 21:43:07,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-20 21:43:07,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-07-20 21:43:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:07,252 INFO L225 Difference]: With dead ends: 42 [2018-07-20 21:43:07,252 INFO L226 Difference]: Without dead ends: 29 [2018-07-20 21:43:07,253 INFO L578 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 [2018-07-20 21:43:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-20 21:43:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-07-20 21:43:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-20 21:43:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-07-20 21:43:07,262 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2018-07-20 21:43:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:07,262 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-07-20 21:43:07,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-20 21:43:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-07-20 21:43:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-20 21:43:07,263 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:07,265 INFO L358 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:07,265 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:07,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2119982969, now seen corresponding path program 1 times [2018-07-20 21:43:07,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:07,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:07,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:07,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:07,267 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:07,377 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:07,377 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:43:07,378 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-07-20 21:43:07,380 INFO L201 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [22], [24], [26], [30], [34], [39], [42], [53], [54], [55], [57] [2018-07-20 21:43:07,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-20 21:43:07,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-20 21:43:07,534 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-20 21:43:07,709 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-20 21:43:07,710 INFO L272 AbstractInterpreter]: Visited 17 different actions 60 times. Merged at 4 different actions 34 times. Widened at 1 different actions 5 times. Found 8 fixpoints after 2 different actions. Largest state had 3 variables. [2018-07-20 21:43:07,725 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-20 21:43:07,725 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:07,725 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:43:07,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:07,738 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:07,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:07,822 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-07-20 21:43:07,824 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:07,839 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-07-20 21:43:07,839 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:08,022 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-07-20 21:43:08,022 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-20 21:43:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:08,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:08,937 WARN L169 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2018-07-20 21:43:08,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 13 treesize of output 11 [2018-07-20 21:43:08,952 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:08,960 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:43:08,960 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:101, output treesize:5 [2018-07-20 21:43:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:09,001 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:09,001 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:43:09,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:09,017 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:09,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:09,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:09,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:43:09,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8, 4, 4] total 16 [2018-07-20 21:43:09,281 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:43:09,281 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-20 21:43:09,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-20 21:43:09,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-07-20 21:43:09,282 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2018-07-20 21:43:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:09,680 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-07-20 21:43:09,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-20 21:43:09,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-20 21:43:09,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:09,682 INFO L225 Difference]: With dead ends: 57 [2018-07-20 21:43:09,682 INFO L226 Difference]: Without dead ends: 41 [2018-07-20 21:43:09,683 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-07-20 21:43:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-20 21:43:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2018-07-20 21:43:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-20 21:43:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-07-20 21:43:09,694 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 18 [2018-07-20 21:43:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:09,694 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-07-20 21:43:09,695 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-20 21:43:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-07-20 21:43:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-20 21:43:09,696 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:09,696 INFO L358 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:09,697 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:09,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1507542460, now seen corresponding path program 1 times [2018-07-20 21:43:09,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:09,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:09,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:09,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:09,698 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-20 21:43:09,861 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:09,861 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:43:09,861 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-07-20 21:43:09,862 INFO L201 CegarAbsIntRunner]: [0], [1], [4], [6], [9], [11], [15], [19], [22], [24], [26], [30], [34], [39], [42], [45], [48], [53], [54], [55], [57], [58], [59] [2018-07-20 21:43:09,870 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-20 21:43:09,870 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-20 21:43:09,883 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-20 21:43:10,081 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-20 21:43:10,081 INFO L272 AbstractInterpreter]: Visited 23 different actions 75 times. Merged at 7 different actions 37 times. Widened at 1 different actions 5 times. Found 9 fixpoints after 3 different actions. Largest state had 4 variables. [2018-07-20 21:43:10,087 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-20 21:43:10,088 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:10,088 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:43:10,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:10,096 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:10,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:10,135 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-07-20 21:43:10,136 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:10,137 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:43:10,138 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:10,157 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-07-20 21:43:10,157 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-20 21:43:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:10,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:10,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 14 treesize of output 12 [2018-07-20 21:43:10,650 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:10,651 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:43:10,651 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:5 [2018-07-20 21:43:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:10,725 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:10,725 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:43:10,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:10,740 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:10,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-20 21:43:10,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-20 21:43:12,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:43:12,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 10, 5, 5] total 21 [2018-07-20 21:43:12,902 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:43:12,902 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-20 21:43:12,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-20 21:43:12,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=335, Unknown=1, NotChecked=0, Total=420 [2018-07-20 21:43:12,903 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2018-07-20 21:43:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:13,168 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2018-07-20 21:43:13,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-20 21:43:13,168 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-07-20 21:43:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:13,169 INFO L225 Difference]: With dead ends: 78 [2018-07-20 21:43:13,169 INFO L226 Difference]: Without dead ends: 53 [2018-07-20 21:43:13,170 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=99, Invalid=406, Unknown=1, NotChecked=0, Total=506 [2018-07-20 21:43:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-20 21:43:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-07-20 21:43:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-20 21:43:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-07-20 21:43:13,181 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 30 [2018-07-20 21:43:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:13,181 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-07-20 21:43:13,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-20 21:43:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-07-20 21:43:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-20 21:43:13,183 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:13,183 INFO L358 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:13,183 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:13,184 INFO L82 PathProgramCache]: Analyzing trace with hash -642104728, now seen corresponding path program 1 times [2018-07-20 21:43:13,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:13,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:13,185 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-20 21:43:13,311 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:13,311 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:43:13,312 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-07-20 21:43:13,312 INFO L201 CegarAbsIntRunner]: [0], [1], [4], [6], [9], [11], [15], [19], [22], [24], [26], [30], [34], [39], [42], [45], [48], [53], [54], [55], [57], [58], [59], [60] [2018-07-20 21:43:13,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-20 21:43:13,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-20 21:43:13,318 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-20 21:43:13,710 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-20 21:43:13,710 INFO L272 AbstractInterpreter]: Visited 24 different actions 229 times. Merged at 11 different actions 86 times. Widened at 2 different actions 10 times. Found 18 fixpoints after 5 different actions. Largest state had 4 variables. [2018-07-20 21:43:13,721 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-20 21:43:13,722 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:13,722 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:43:13,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:13,728 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:13,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:13,764 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-07-20 21:43:13,765 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:13,766 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-07-20 21:43:13,767 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:13,791 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-07-20 21:43:13,792 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-20 21:43:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-20 21:43:14,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:24,284 WARN L169 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 14 [2018-07-20 21:43:26,325 WARN L169 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 13 [2018-07-20 21:43:28,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 13 treesize of output 11 [2018-07-20 21:43:28,491 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:28,640 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:43:28,641 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:101, output treesize:5 [2018-07-20 21:43:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-20 21:43:28,889 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:28,889 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:43:28,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:28,904 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:28,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-20 21:43:28,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-20 21:43:31,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:43:31,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 12, 6, 6] total 26 [2018-07-20 21:43:31,193 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:43:31,194 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-20 21:43:31,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-20 21:43:31,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=519, Unknown=5, NotChecked=0, Total=650 [2018-07-20 21:43:31,195 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 12 states. [2018-07-20 21:43:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:31,566 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2018-07-20 21:43:31,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-20 21:43:31,566 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-07-20 21:43:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:31,567 INFO L225 Difference]: With dead ends: 99 [2018-07-20 21:43:31,567 INFO L226 Difference]: Without dead ends: 65 [2018-07-20 21:43:31,568 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=143, Invalid=608, Unknown=5, NotChecked=0, Total=756 [2018-07-20 21:43:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-20 21:43:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-07-20 21:43:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-20 21:43:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2018-07-20 21:43:31,580 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 42 [2018-07-20 21:43:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:31,580 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2018-07-20 21:43:31,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-20 21:43:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2018-07-20 21:43:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-20 21:43:31,582 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:31,582 INFO L358 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:31,582 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:31,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1952021885, now seen corresponding path program 2 times [2018-07-20 21:43:31,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:31,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:31,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:31,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:31,584 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-20 21:43:31,740 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:31,740 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:43:31,740 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:43:31,740 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:43:31,740 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:31,741 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:43:31,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-20 21:43:31,747 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:43:31,768 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-20 21:43:31,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:43:31,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:31,808 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-07-20 21:43:31,809 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:31,810 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:43:31,810 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:31,827 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-07-20 21:43:31,828 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-20 21:43:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-20 21:43:32,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:40,379 WARN L169 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 14 [2018-07-20 21:43:42,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 14 treesize of output 12 [2018-07-20 21:43:42,557 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:43:42,558 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:43:42,558 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:5 [2018-07-20 21:43:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-20 21:43:44,786 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:44,786 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:43:44,803 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-20 21:43:44,803 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:43:44,882 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-20 21:43:44,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:43:44,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-20 21:43:44,903 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-20 21:43:51,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:43:51,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 14, 7, 7] total 31 [2018-07-20 21:43:51,382 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:43:51,382 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-20 21:43:51,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-20 21:43:51,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=745, Unknown=7, NotChecked=0, Total=930 [2018-07-20 21:43:51,383 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 14 states. [2018-07-20 21:43:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:51,769 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2018-07-20 21:43:51,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-20 21:43:51,770 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2018-07-20 21:43:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:51,771 INFO L225 Difference]: With dead ends: 120 [2018-07-20 21:43:51,771 INFO L226 Difference]: Without dead ends: 77 [2018-07-20 21:43:51,772 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=196, Invalid=853, Unknown=7, NotChecked=0, Total=1056 [2018-07-20 21:43:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-20 21:43:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2018-07-20 21:43:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-20 21:43:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2018-07-20 21:43:51,787 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 54 [2018-07-20 21:43:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:51,787 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2018-07-20 21:43:51,787 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-20 21:43:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2018-07-20 21:43:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-20 21:43:51,789 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:51,789 INFO L358 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:51,789 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -946885111, now seen corresponding path program 3 times [2018-07-20 21:43:51,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:51,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:51,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:43:51,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:51,791 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:43:51,979 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:51,979 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:43:51,979 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:43:51,979 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:43:51,979 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:51,979 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:43:51,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-20 21:43:51,986 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-20 21:44:04,209 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-07-20 21:44:04,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:44:04,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:44:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:44:04,234 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:44:06,284 WARN L1032 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~index~0 1))) (or (< 0 (mod .cse0 2)) (<= 1000 (mod .cse0 4294967296)))) is different from true [2018-07-20 21:44:14,376 WARN L1032 $PredicateComparison]: unable to prove that (or (< 0 (mod (+ c_main_~index~0 1) 2)) (<= 1000 (mod (+ c_main_~index~0 3) 4294967296)) (<= 1000 (mod (+ c_main_~index~0 2) 4294967296))) is different from true [2018-07-20 21:44:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 21 not checked. [2018-07-20 21:44:25,525 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:25,525 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-20 21:44:25,539 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-20 21:44:25,539 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-20 21:44:38,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-07-20 21:44:38,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:44:38,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:44:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:44:38,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:44:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:38,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:44:38,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 15, 8, 8] total 21 [2018-07-20 21:44:38,864 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:44:38,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-20 21:44:38,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-20 21:44:38,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=249, Unknown=7, NotChecked=70, Total=420 [2018-07-20 21:44:38,865 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2018-07-20 21:44:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:44:39,069 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2018-07-20 21:44:39,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-20 21:44:39,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2018-07-20 21:44:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:44:39,070 INFO L225 Difference]: With dead ends: 137 [2018-07-20 21:44:39,070 INFO L226 Difference]: Without dead ends: 85 [2018-07-20 21:44:39,071 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 248 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=94, Invalid=249, Unknown=7, NotChecked=70, Total=420 [2018-07-20 21:44:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-20 21:44:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2018-07-20 21:44:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-20 21:44:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2018-07-20 21:44:39,086 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 66 [2018-07-20 21:44:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:44:39,086 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2018-07-20 21:44:39,087 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-20 21:44:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2018-07-20 21:44:39,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-20 21:44:39,088 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:44:39,088 INFO L358 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:44:39,089 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:44:39,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1896004632, now seen corresponding path program 4 times [2018-07-20 21:44:39,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:44:39,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:44:39,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:44:39,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:44:39,091 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:44:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:44:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:39,475 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:39,476 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:44:39,476 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:44:39,476 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:44:39,476 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:39,476 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-20 21:44:39,490 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-20 21:44:39,490 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:44:39,511 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-20 21:44:39,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:44:39,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:44:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:44:39,526 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:44:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:39,903 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:39,903 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-20 21:44:39,917 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-20 21:44:39,917 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-20 21:44:40,065 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-20 21:44:40,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:44:40,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:44:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:44:40,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:44:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:40,196 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:44:40,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-07-20 21:44:40,197 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:44:40,198 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-20 21:44:40,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-20 21:44:40,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-07-20 21:44:40,199 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 9 states. [2018-07-20 21:44:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:44:40,571 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2018-07-20 21:44:40,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-20 21:44:40,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-20 21:44:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:44:40,572 INFO L225 Difference]: With dead ends: 150 [2018-07-20 21:44:40,572 INFO L226 Difference]: Without dead ends: 93 [2018-07-20 21:44:40,573 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-07-20 21:44:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-20 21:44:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2018-07-20 21:44:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-20 21:44:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2018-07-20 21:44:40,591 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 69 [2018-07-20 21:44:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:44:40,591 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2018-07-20 21:44:40,591 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-20 21:44:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2018-07-20 21:44:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-20 21:44:40,593 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:44:40,593 INFO L358 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:44:40,593 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:44:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1964228521, now seen corresponding path program 5 times [2018-07-20 21:44:40,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:44:40,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:44:40,594 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:44:40,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:44:40,594 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:44:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:44:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:40,836 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:40,836 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:44:40,836 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:44:40,836 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:44:40,836 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:40,836 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:44:40,842 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-20 21:44:40,842 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:44:43,476 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-07-20 21:44:43,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:44:43,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:44:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:44:43,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:44:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:49,324 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:49,324 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-20 21:44:49,339 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-20 21:44:49,339 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:44:54,276 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-07-20 21:44:54,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:44:54,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:44:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:44:54,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:44:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:54,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:44:54,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10] total 18 [2018-07-20 21:44:54,333 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:44:54,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-20 21:44:54,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-20 21:44:54,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-07-20 21:44:54,333 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 10 states. [2018-07-20 21:44:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:44:54,629 INFO L93 Difference]: Finished difference Result 163 states and 176 transitions. [2018-07-20 21:44:54,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-20 21:44:54,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2018-07-20 21:44:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:44:54,631 INFO L225 Difference]: With dead ends: 163 [2018-07-20 21:44:54,631 INFO L226 Difference]: Without dead ends: 101 [2018-07-20 21:44:54,632 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 278 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-07-20 21:44:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-20 21:44:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2018-07-20 21:44:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-20 21:44:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2018-07-20 21:44:54,650 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 72 [2018-07-20 21:44:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:44:54,650 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2018-07-20 21:44:54,650 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-20 21:44:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2018-07-20 21:44:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-20 21:44:54,652 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:44:54,652 INFO L358 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:44:54,652 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:44:54,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1392392584, now seen corresponding path program 6 times [2018-07-20 21:44:54,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:44:54,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:44:54,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:44:54,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:44:54,654 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:44:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:44:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:44:54,887 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:54,887 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:44:54,887 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:44:54,887 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:44:54,887 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:44:54,887 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:44:54,893 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-20 21:44:54,893 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-20 21:45:07,196 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-07-20 21:45:07,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:45:07,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:45:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:45:07,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:45:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 97 refuted. 3 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:12,371 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:12,371 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-20 21:45:12,385 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-20 21:45:12,385 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-20 21:45:36,982 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-07-20 21:45:36,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:45:37,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:45:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:45:37,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:45:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 97 refuted. 3 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:37,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:45:37,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 20 [2018-07-20 21:45:37,125 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:45:37,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-20 21:45:37,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-20 21:45:37,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=261, Unknown=1, NotChecked=0, Total=380 [2018-07-20 21:45:37,126 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand 11 states. [2018-07-20 21:45:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:45:37,462 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2018-07-20 21:45:37,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-20 21:45:37,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2018-07-20 21:45:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:45:37,464 INFO L225 Difference]: With dead ends: 176 [2018-07-20 21:45:37,464 INFO L226 Difference]: Without dead ends: 109 [2018-07-20 21:45:37,465 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 289 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=118, Invalid=261, Unknown=1, NotChecked=0, Total=380 [2018-07-20 21:45:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-20 21:45:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2018-07-20 21:45:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-20 21:45:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2018-07-20 21:45:37,486 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 75 [2018-07-20 21:45:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:45:37,486 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2018-07-20 21:45:37,486 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-20 21:45:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2018-07-20 21:45:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-20 21:45:37,487 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:45:37,488 INFO L358 BasicCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:45:37,488 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:45:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1231821129, now seen corresponding path program 7 times [2018-07-20 21:45:37,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:45:37,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:45:37,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:45:37,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:45:37,489 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:45:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:45:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 126 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:37,805 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:37,805 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:45:37,805 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:45:37,805 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:45:37,805 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:37,805 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:45:37,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:45:37,822 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:45:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:45:37,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:45:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:45:37,856 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:45:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 126 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:43,523 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:43,524 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-20 21:45:43,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:45:43,539 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:45:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:45:43,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:45:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:45:43,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:45:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 126 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:44,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:45:44,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 22 [2018-07-20 21:45:44,052 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:45:44,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-20 21:45:44,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-20 21:45:44,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2018-07-20 21:45:44,053 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand 12 states. [2018-07-20 21:45:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:45:44,434 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2018-07-20 21:45:44,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-20 21:45:44,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2018-07-20 21:45:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:45:44,436 INFO L225 Difference]: With dead ends: 189 [2018-07-20 21:45:44,436 INFO L226 Difference]: Without dead ends: 117 [2018-07-20 21:45:44,437 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2018-07-20 21:45:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-20 21:45:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2018-07-20 21:45:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-20 21:45:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-07-20 21:45:44,455 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 78 [2018-07-20 21:45:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:45:44,455 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-07-20 21:45:44,455 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-20 21:45:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-07-20 21:45:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-20 21:45:44,456 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:45:44,457 INFO L358 BasicCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:45:44,457 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:45:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2107143976, now seen corresponding path program 8 times [2018-07-20 21:45:44,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:45:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:45:44,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:45:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:45:44,458 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:45:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:45:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:44,808 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:44,808 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:45:44,808 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:45:44,808 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:45:44,808 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:44,808 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:45:44,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-20 21:45:44,814 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:45:44,834 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-20 21:45:44,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:45:44,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:45:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:45:44,847 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:45:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:47,973 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:47,973 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-20 21:45:47,988 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-20 21:45:47,988 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:45:48,079 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-20 21:45:48,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:45:48,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:45:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-20 21:45:48,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:45:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:48,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:45:48,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13] total 24 [2018-07-20 21:45:48,343 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:45:48,343 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-20 21:45:48,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-20 21:45:48,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-07-20 21:45:48,344 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 13 states. [2018-07-20 21:45:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:45:49,850 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2018-07-20 21:45:49,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-20 21:45:49,851 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2018-07-20 21:45:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:45:49,852 INFO L225 Difference]: With dead ends: 202 [2018-07-20 21:45:49,853 INFO L226 Difference]: Without dead ends: 125 [2018-07-20 21:45:49,853 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-07-20 21:45:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-20 21:45:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2018-07-20 21:45:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-20 21:45:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2018-07-20 21:45:49,873 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 81 [2018-07-20 21:45:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:45:49,874 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2018-07-20 21:45:49,874 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-20 21:45:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2018-07-20 21:45:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-20 21:45:49,874 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:45:49,874 INFO L358 BasicCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:45:49,875 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:45:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1774011671, now seen corresponding path program 9 times [2018-07-20 21:45:49,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:45:49,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:45:49,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:45:49,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:45:49,876 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:45:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:45:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 8 proven. 187 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-20 21:45:50,106 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:50,106 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:45:50,106 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:45:50,106 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:45:50,106 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:45:50,106 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:45:50,112 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-20 21:45:50,112 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-20 21:46:06,357 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-07-20 21:46:06,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:46:06,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:46:06,405 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:06,405 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:06,420 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-07-20 21:46:06,421 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:06,425 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:06,426 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:91, output treesize:16 [2018-07-20 21:46:06,478 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:06,478 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:06,534 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:06,536 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:06,537 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 45 [2018-07-20 21:46:06,538 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:06,551 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:06,551 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:115, output treesize:29 [2018-07-20 21:46:06,676 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:06,677 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:08,740 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:08,743 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:08,746 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:08,748 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:08,749 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 82 [2018-07-20 21:46:08,750 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:08,787 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:08,787 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:148, output treesize:40 [2018-07-20 21:46:08,987 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:08,987 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:09,000 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,002 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,010 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,017 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,020 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,027 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,032 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:09,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 141 [2018-07-20 21:46:09,034 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:09,133 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:09,133 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:187, output treesize:53 [2018-07-20 21:46:09,569 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-20 21:46:09,575 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:09,575 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:13,774 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,783 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,789 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,796 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,802 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,815 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,820 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,824 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,831 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,837 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,855 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:13,856 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 186 [2018-07-20 21:46:13,857 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:13,956 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:13,956 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:220, output treesize:64 [2018-07-20 21:46:16,199 WARN L169 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 35 [2018-07-20 21:46:16,706 WARN L169 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-07-20 21:46:16,710 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:16,744 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:16,751 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,780 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,799 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,812 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,846 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,847 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,848 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,849 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,859 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,874 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,884 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,931 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,950 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,968 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,976 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,980 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:16,981 INFO L303 Elim1Store]: Index analysis took 236 ms [2018-07-20 21:46:16,982 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 269 [2018-07-20 21:46:16,982 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:19,429 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:19,430 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:259, output treesize:77 [2018-07-20 21:46:21,826 WARN L169 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 40 [2018-07-20 21:46:22,964 WARN L169 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-07-20 21:46:22,968 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:22,968 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:29,800 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:29,813 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:29,893 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:29,945 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:29,970 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,005 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,024 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,051 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,057 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,102 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,120 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,178 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,203 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,215 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,241 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,255 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,269 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,282 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,299 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,307 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,316 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,352 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:30,353 INFO L303 Elim1Store]: Index analysis took 639 ms [2018-07-20 21:46:30,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 338 [2018-07-20 21:46:30,355 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:30,733 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:30,733 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:307, output treesize:88 [2018-07-20 21:46:31,597 WARN L169 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-07-20 21:46:32,811 WARN L169 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-07-20 21:46:32,831 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:46:32,832 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:32,910 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:32,924 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:32,971 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,008 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,030 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,066 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,087 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,135 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,199 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,246 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,277 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,288 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,298 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,321 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,364 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,455 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,473 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,490 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,503 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,512 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,548 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,568 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,576 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,601 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,635 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,702 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,723 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,767 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,794 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:33,795 INFO L303 Elim1Store]: Index analysis took 961 ms [2018-07-20 21:46:33,796 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 450 [2018-07-20 21:46:33,798 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:35,598 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:46:35,598 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:346, output treesize:101 [2018-07-20 21:46:37,094 WARN L169 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-07-20 21:46:40,747 WARN L169 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 52 [2018-07-20 21:46:40,803 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:40,827 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:40,931 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:40,958 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,017 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,041 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,064 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,084 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,115 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,193 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,243 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,271 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,287 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,339 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,487 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,497 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,523 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,607 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,636 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,655 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,723 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,735 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,784 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,835 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,879 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,926 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:41,976 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,026 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,076 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,088 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,161 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,184 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,224 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,263 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,291 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,319 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,377 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,378 INFO L303 Elim1Store]: Index analysis took 1626 ms [2018-07-20 21:46:42,379 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 554 [2018-07-20 21:46:42,380 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:46:42,475 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,503 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,580 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,634 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,650 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,670 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,720 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,749 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,768 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,797 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,872 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,904 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:42,990 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,004 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,022 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,050 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,066 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,105 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,117 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,135 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,181 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,208 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,250 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,293 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,366 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,384 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,406 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,435 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,465 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,486 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,512 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,572 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,582 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,627 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,661 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,702 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,717 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:46:43,718 INFO L303 Elim1Store]: Index analysis took 1336 ms [2018-07-20 21:46:43,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 555 [2018-07-20 21:46:43,721 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:47:12,864 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:47:12,864 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:379, output treesize:112 [2018-07-20 21:47:15,045 WARN L169 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 55 [2018-07-20 21:47:19,878 WARN L169 SmtUtils]: Spent 3.68 s on a formula simplification that was a NOOP. DAG size: 57 [2018-07-20 21:47:19,885 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:47:19,885 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-20 21:47:28,394 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,443 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,510 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,764 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,800 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,823 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,873 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:28,962 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,197 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,311 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,361 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,404 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,421 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,603 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,748 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,918 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:29,998 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,027 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,073 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,292 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,407 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,433 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,668 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:30,761 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,385 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,415 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,432 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,464 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,503 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,560 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,763 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,815 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,866 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,910 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:31,948 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,018 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,040 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,061 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,086 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,104 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,128 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,228 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,252 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,265 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,303 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,322 INFO L700 Elim1Store]: detected not equals via solver [2018-07-20 21:47:32,323 INFO L303 Elim1Store]: Index analysis took 4161 ms [2018-07-20 21:47:32,325 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 657 [2018-07-20 21:47:32,326 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-20 21:47:37,258 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-20 21:47:37,258 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:418, output treesize:125 [2018-07-20 21:47:41,844 WARN L169 SmtUtils]: Spent 3.56 s on a formula simplification that was a NOOP. DAG size: 60 [2018-07-20 21:47:45,887 WARN L169 SmtUtils]: Spent 3.08 s on a formula simplification that was a NOOP. DAG size: 62 [2018-07-20 21:47:45,899 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-20 21:47:45,899 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. Received shutdown request... [2018-07-20 21:47:50,829 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-20 21:47:51,030 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-20 21:47:51,030 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-20 21:47:51,034 WARN L202 ceAbstractionStarter]: Timeout [2018-07-20 21:47:51,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:47:51 BoogieIcfgContainer [2018-07-20 21:47:51,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-20 21:47:51,035 INFO L168 Benchmark]: Toolchain (without parser) took 285199.53 ms. Allocated memory was 306.2 MB in the beginning and 508.0 MB in the end (delta: 201.9 MB). Free memory was 253.6 MB in the beginning and 475.8 MB in the end (delta: -222.2 MB). Peak memory consumption was 150.0 MB. Max. memory is 5.3 GB. [2018-07-20 21:47:51,036 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-20 21:47:51,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.24 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 243.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-07-20 21:47:51,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.10 ms. Allocated memory is still 306.2 MB. Free memory was 243.4 MB in the beginning and 242.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. [2018-07-20 21:47:51,037 INFO L168 Benchmark]: Boogie Preprocessor took 24.99 ms. Allocated memory is still 306.2 MB. Free memory was 242.4 MB in the beginning and 241.4 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-07-20 21:47:51,037 INFO L168 Benchmark]: RCFGBuilder took 481.07 ms. Allocated memory was 306.2 MB in the beginning and 466.1 MB in the end (delta: 159.9 MB). Free memory was 241.4 MB in the beginning and 436.2 MB in the end (delta: -194.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-07-20 21:47:51,038 INFO L168 Benchmark]: TraceAbstraction took 284365.02 ms. Allocated memory was 466.1 MB in the beginning and 508.0 MB in the end (delta: 41.9 MB). Free memory was 434.8 MB in the beginning and 475.8 MB in the end (delta: -41.0 MB). Peak memory consumption was 171.4 MB. Max. memory is 5.3 GB. [2018-07-20 21:47:51,040 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 294.24 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 243.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 24.10 ms. Allocated memory is still 306.2 MB. Free memory was 243.4 MB in the beginning and 242.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.99 ms. Allocated memory is still 306.2 MB. Free memory was 242.4 MB in the beginning and 241.4 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 481.07 ms. Allocated memory was 306.2 MB in the beginning and 466.1 MB in the end (delta: 159.9 MB). Free memory was 241.4 MB in the beginning and 436.2 MB in the end (delta: -194.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 284365.02 ms. Allocated memory was 466.1 MB in the beginning and 508.0 MB in the end (delta: 41.9 MB). Free memory was 434.8 MB in the beginning and 475.8 MB in the end (delta: -41.0 MB). Peak memory consumption was 171.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 11]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 11). Cancelled while BasicCegarLoop was analyzing trace of length 85 with TraceHistMax 12, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 74. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. TIMEOUT Result, 284.2s OverallTime, 13 OverallIterations, 12 TraceHistogramMax, 4.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 445 SDtfs, 291 SDslu, 2425 SDs, 0 SdLazy, 3501 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2418 GetRequests, 2189 SyntacticMatches, 25 SemanticMatches, 204 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 82.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 33 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 71.1s SatisfiabilityAnalysisTime, 85.2s InterpolantComputationTime, 1784 NumberOfCodeBlocks, 1784 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 2902 ConstructedInterpolants, 62 QuantifiedInterpolants, 657029 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1998 ConjunctsInSsa, 334 ConjunctsInUnsatCore, 52 InterpolantComputations, 2 PerfectInterpolantSequences, 2377/5510 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-20_21-47-51-053.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-20_21-47-51-053.csv Completed graceful shutdown