java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 10:53:17,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 10:53:17,982 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 10:53:17,994 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 10:53:17,994 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 10:53:17,996 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 10:53:17,997 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 10:53:18,001 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 10:53:18,003 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 10:53:18,004 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 10:53:18,005 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 10:53:18,005 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 10:53:18,006 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 10:53:18,007 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 10:53:18,008 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 10:53:18,009 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 10:53:18,010 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 10:53:18,012 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 10:53:18,014 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 10:53:18,016 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 10:53:18,017 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 10:53:18,019 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 10:53:18,021 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 10:53:18,022 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 10:53:18,022 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 10:53:18,023 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 10:53:18,024 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 10:53:18,025 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 10:53:18,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 10:53:18,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 10:53:18,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 10:53:18,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-24 10:53:18,031 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 10:53:18,056 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 10:53:18,057 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 10:53:18,058 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 10:53:18,058 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 10:53:18,058 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 10:53:18,058 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 10:53:18,058 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 10:53:18,059 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 10:53:18,059 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 10:53:18,059 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 10:53:18,060 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 10:53:18,061 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 10:53:18,061 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 10:53:18,061 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 10:53:18,061 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 10:53:18,061 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 10:53:18,062 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 10:53:18,062 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 10:53:18,062 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 10:53:18,062 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 10:53:18,063 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 10:53:18,064 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 10:53:18,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 10:53:18,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:53:18,064 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 10:53:18,064 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 10:53:18,065 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 10:53:18,065 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 10:53:18,065 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 10:53:18,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 10:53:18,066 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 10:53:18,066 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 10:53:18,066 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 10:53:18,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 10:53:18,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 10:53:18,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 10:53:18,152 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 10:53:18,152 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 10:53:18,153 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-07-24 10:53:18,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3906f55f4/4d4adfa7057b4eae929f130f6a24d73c/FLAGe02067cfe [2018-07-24 10:53:18,637 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 10:53:18,638 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-07-24 10:53:18,644 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3906f55f4/4d4adfa7057b4eae929f130f6a24d73c/FLAGe02067cfe [2018-07-24 10:53:18,657 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3906f55f4/4d4adfa7057b4eae929f130f6a24d73c [2018-07-24 10:53:18,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 10:53:18,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 10:53:18,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 10:53:18,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 10:53:18,676 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 10:53:18,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0fc1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18, skipping insertion in model container [2018-07-24 10:53:18,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,843 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 10:53:18,893 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:53:18,910 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 10:53:18,922 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:53:18,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18 WrapperNode [2018-07-24 10:53:18,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 10:53:18,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 10:53:18,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 10:53:18,938 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 10:53:18,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 10:53:18,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 10:53:18,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 10:53:18,962 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 10:53:18,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:18,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... [2018-07-24 10:53:19,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 10:53:19,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 10:53:19,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 10:53:19,001 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 10:53:19,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:53:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 10:53:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 10:53:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert [2018-07-24 10:53:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert [2018-07-24 10:53:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 10:53:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 10:53:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 10:53:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 10:53:19,433 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 10:53:19,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:53:19 BoogieIcfgContainer [2018-07-24 10:53:19,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 10:53:19,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 10:53:19,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 10:53:19,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 10:53:19,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 10:53:18" (1/3) ... [2018-07-24 10:53:19,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5524c0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:53:19, skipping insertion in model container [2018-07-24 10:53:19,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:53:18" (2/3) ... [2018-07-24 10:53:19,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5524c0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:53:19, skipping insertion in model container [2018-07-24 10:53:19,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:53:19" (3/3) ... [2018-07-24 10:53:19,442 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call1_true-termination.i [2018-07-24 10:53:19,453 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 10:53:19,463 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 10:53:19,522 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 10:53:19,522 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 10:53:19,523 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 10:53:19,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 10:53:19,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 10:53:19,523 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 10:53:19,523 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 10:53:19,523 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 10:53:19,524 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 10:53:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-07-24 10:53:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-24 10:53:19,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:53:19,563 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:53:19,563 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:53:19,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1189535701, now seen corresponding path program 1 times [2018-07-24 10:53:19,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:53:19,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:19,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:19,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:19,624 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:53:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:19,683 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:53:19,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 10:53:19,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:53:19,688 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-24 10:53:19,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-24 10:53:19,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:53:19,702 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-07-24 10:53:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:53:19,725 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2018-07-24 10:53:19,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 10:53:19,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-07-24 10:53:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:53:19,740 INFO L225 Difference]: With dead ends: 42 [2018-07-24 10:53:19,740 INFO L226 Difference]: Without dead ends: 21 [2018-07-24 10:53:19,744 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:53:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-24 10:53:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-24 10:53:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-24 10:53:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-07-24 10:53:19,791 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2018-07-24 10:53:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:53:19,792 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-07-24 10:53:19,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-24 10:53:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-07-24 10:53:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 10:53:19,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:53:19,793 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:53:19,794 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:53:19,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2089413066, now seen corresponding path program 1 times [2018-07-24 10:53:19,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:53:19,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:19,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:19,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:19,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:53:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:19,900 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:53:19,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 10:53:19,901 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:53:19,903 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 10:53:19,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 10:53:19,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 10:53:19,904 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2018-07-24 10:53:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:53:20,010 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-07-24 10:53:20,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 10:53:20,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-07-24 10:53:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:53:20,014 INFO L225 Difference]: With dead ends: 42 [2018-07-24 10:53:20,014 INFO L226 Difference]: Without dead ends: 29 [2018-07-24 10:53:20,015 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 10:53:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-24 10:53:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-07-24 10:53:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-24 10:53:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-07-24 10:53:20,026 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2018-07-24 10:53:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:53:20,026 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-07-24 10:53:20,026 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 10:53:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-07-24 10:53:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-24 10:53:20,027 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:53:20,028 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:53:20,029 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:53:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2119982969, now seen corresponding path program 1 times [2018-07-24 10:53:20,029 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:53:20,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:20,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:20,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:20,036 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:53:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:20,180 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:20,180 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:53:20,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:20,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:53:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:20,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:20,303 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 [2018-07-24 10:53:20,306 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:20,317 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 [2018-07-24 10:53:20,318 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:20,486 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. [2018-07-24 10:53:20,487 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-24 10:53:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:20,839 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:53:21,588 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2018-07-24 10:53:21,600 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 [2018-07-24 10:53:21,602 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:21,617 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-24 10:53:21,617 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:101, output treesize:5 [2018-07-24 10:53:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:21,675 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:21,675 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:53:21,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:21,694 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:53:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:21,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:21,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:53:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:21,946 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:53:21,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 8, 4, 4] total 16 [2018-07-24 10:53:21,946 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:53:21,947 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:53:21,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:53:21,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-07-24 10:53:21,951 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2018-07-24 10:53:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:53:24,395 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-07-24 10:53:24,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:53:24,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-24 10:53:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:53:24,398 INFO L225 Difference]: With dead ends: 57 [2018-07-24 10:53:24,398 INFO L226 Difference]: Without dead ends: 41 [2018-07-24 10:53:24,399 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-07-24 10:53:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-24 10:53:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2018-07-24 10:53:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-24 10:53:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-07-24 10:53:24,409 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 18 [2018-07-24 10:53:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:53:24,410 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-07-24 10:53:24,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:53:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-07-24 10:53:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-24 10:53:24,411 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:53:24,411 INFO L353 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] [2018-07-24 10:53:24,412 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:53:24,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1507542460, now seen corresponding path program 1 times [2018-07-24 10:53:24,412 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:53:24,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:24,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:24,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:24,413 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:53:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-24 10:53:24,585 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:24,585 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:53:24,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:24,602 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:53:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:24,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:24,665 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 [2018-07-24 10:53:24,666 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:24,668 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-24 10:53:24,668 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:24,700 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. [2018-07-24 10:53:24,701 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-24 10:53:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:24,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:53:27,265 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 [2018-07-24 10:53:27,272 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:27,274 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-24 10:53:27,274 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:5 [2018-07-24 10:53:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:53:31,357 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:31,357 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:53:31,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:31,380 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:53:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:31,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 10:53:31,442 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:53:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-24 10:53:31,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:53:31,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 10, 5, 5] total 21 [2018-07-24 10:53:31,593 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:53:31,593 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 10:53:31,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 10:53:31,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=335, Unknown=3, NotChecked=0, Total=420 [2018-07-24 10:53:31,594 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2018-07-24 10:53:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:53:32,076 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2018-07-24 10:53:32,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 10:53:32,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-07-24 10:53:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:53:32,078 INFO L225 Difference]: With dead ends: 78 [2018-07-24 10:53:32,078 INFO L226 Difference]: Without dead ends: 53 [2018-07-24 10:53:32,079 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=97, Invalid=406, Unknown=3, NotChecked=0, Total=506 [2018-07-24 10:53:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-24 10:53:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-07-24 10:53:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-24 10:53:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-07-24 10:53:32,090 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 30 [2018-07-24 10:53:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:53:32,091 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-07-24 10:53:32,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 10:53:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-07-24 10:53:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-24 10:53:32,092 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:53:32,093 INFO L353 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] [2018-07-24 10:53:32,093 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:53:32,093 INFO L82 PathProgramCache]: Analyzing trace with hash -642104728, now seen corresponding path program 1 times [2018-07-24 10:53:32,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:53:32,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:32,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:32,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:32,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:53:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 10:53:32,255 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:32,255 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:53:32,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:32,264 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:53:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:32,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:32,309 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 [2018-07-24 10:53:32,309 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:32,313 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 [2018-07-24 10:53:32,313 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:32,354 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. [2018-07-24 10:53:32,355 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-24 10:53:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 10:53:32,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:53:45,128 WARN L169 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 10:53:49,194 WARN L169 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 10:53:49,303 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 [2018-07-24 10:53:49,307 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:49,315 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-24 10:53:49,316 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:101, output treesize:5 [2018-07-24 10:53:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 10:53:49,419 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:49,419 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:53:49,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:49,436 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:53:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:49,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 10:53:49,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:53:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 10:53:57,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:53:57,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 12, 6, 6] total 26 [2018-07-24 10:53:57,020 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:53:57,020 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 10:53:57,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 10:53:57,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=517, Unknown=7, NotChecked=0, Total=650 [2018-07-24 10:53:57,022 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 12 states. [2018-07-24 10:53:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:53:57,560 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2018-07-24 10:53:57,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 10:53:57,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-07-24 10:53:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:53:57,562 INFO L225 Difference]: With dead ends: 99 [2018-07-24 10:53:57,562 INFO L226 Difference]: Without dead ends: 65 [2018-07-24 10:53:57,564 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=143, Invalid=606, Unknown=7, NotChecked=0, Total=756 [2018-07-24 10:53:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-24 10:53:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-07-24 10:53:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-24 10:53:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2018-07-24 10:53:57,587 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 42 [2018-07-24 10:53:57,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:53:57,588 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2018-07-24 10:53:57,588 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 10:53:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2018-07-24 10:53:57,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-24 10:53:57,591 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:53:57,591 INFO L353 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] [2018-07-24 10:53:57,591 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:53:57,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1952021885, now seen corresponding path program 2 times [2018-07-24 10:53:57,592 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:53:57,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:57,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:53:57,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:53:57,596 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:53:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:53:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 10:53:57,814 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:53:57,815 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:53:57,823 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:53:57,823 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:53:57,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:53:57,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:53:57,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:53:57,899 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 [2018-07-24 10:53:57,900 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:57,901 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-24 10:53:57,902 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-24 10:53:57,934 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. [2018-07-24 10:53:57,934 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:76, output treesize:16 [2018-07-24 10:53:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 10:53:58,250 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:08,503 WARN L169 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 10:54:10,617 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 [2018-07-24 10:54:10,625 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:54:10,626 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-24 10:54:10,626 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:5 [2018-07-24 10:54:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 10:54:12,813 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:12,813 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:12,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:54:12,828 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:54:12,916 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:54:12,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:54:12,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-24 10:54:12,943 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 10:54:23,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:23,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 14, 7, 7] total 31 [2018-07-24 10:54:23,394 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:23,395 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 10:54:23,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 10:54:23,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=742, Unknown=10, NotChecked=0, Total=930 [2018-07-24 10:54:23,398 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 14 states. [2018-07-24 10:54:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:24,010 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2018-07-24 10:54:24,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 10:54:24,011 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2018-07-24 10:54:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:24,012 INFO L225 Difference]: With dead ends: 120 [2018-07-24 10:54:24,012 INFO L226 Difference]: Without dead ends: 77 [2018-07-24 10:54:24,014 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=196, Invalid=850, Unknown=10, NotChecked=0, Total=1056 [2018-07-24 10:54:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-24 10:54:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2018-07-24 10:54:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-24 10:54:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2018-07-24 10:54:24,028 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 54 [2018-07-24 10:54:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:24,029 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2018-07-24 10:54:24,029 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 10:54:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2018-07-24 10:54:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-24 10:54:24,030 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:24,031 INFO L353 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] [2018-07-24 10:54:24,031 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:24,031 INFO L82 PathProgramCache]: Analyzing trace with hash -946885111, now seen corresponding path program 3 times [2018-07-24 10:54:24,031 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:24,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:24,033 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:54:24,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:24,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:54:24,296 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:24,296 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:24,310 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:54:24,310 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:54:36,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-07-24 10:54:36,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:54:36,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:54:36,464 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:37,372 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 10:54:39,840 WARN L169 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 10:54:40,812 WARN L169 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 10:54:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 10:54:40,846 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:40,846 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 10:54:40,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:54:40,862 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:54:54,170 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-07-24 10:54:54,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:54:54,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:54:54,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:54:55,995 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:55,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 15, 8, 8] total 25 [2018-07-24 10:54:55,995 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:55,996 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:54:55,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:54:55,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2018-07-24 10:54:55,997 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2018-07-24 10:54:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:56,568 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2018-07-24 10:54:56,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:54:56,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2018-07-24 10:54:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:56,570 INFO L225 Difference]: With dead ends: 137 [2018-07-24 10:54:56,570 INFO L226 Difference]: Without dead ends: 85 [2018-07-24 10:54:56,571 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2018-07-24 10:54:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-24 10:54:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2018-07-24 10:54:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-24 10:54:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2018-07-24 10:54:56,587 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 66 [2018-07-24 10:54:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:56,587 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2018-07-24 10:54:56,587 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:54:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2018-07-24 10:54:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-24 10:54:56,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:56,589 INFO L353 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] [2018-07-24 10:54:56,589 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:56,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1896004632, now seen corresponding path program 4 times [2018-07-24 10:54:56,589 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:56,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:56,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:54:56,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:56,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:54:56,770 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:56,770 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:56,778 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:54:56,778 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:54:56,800 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:54:56,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:54:56,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:54:56,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:54:57,679 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:57,679 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 10:54:57,695 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-24 10:54:57,695 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-24 10:54:57,931 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-24 10:54:57,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:54:57,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:54:57,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (13)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 10:54:58,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:58,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-07-24 10:54:58,065 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:58,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 10:54:58,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 10:54:58,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-07-24 10:54:58,066 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 9 states. [2018-07-24 10:54:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:58,403 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2018-07-24 10:54:58,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 10:54:58,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-07-24 10:54:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:58,406 INFO L225 Difference]: With dead ends: 150 [2018-07-24 10:54:58,406 INFO L226 Difference]: Without dead ends: 93 [2018-07-24 10:54:58,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 267 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-07-24 10:54:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-24 10:54:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2018-07-24 10:54:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-24 10:54:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2018-07-24 10:54:58,424 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 69 [2018-07-24 10:54:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:58,425 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2018-07-24 10:54:58,425 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 10:54:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2018-07-24 10:54:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-24 10:54:58,426 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:58,426 INFO L353 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] [2018-07-24 10:54:58,427 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:58,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1964228521, now seen corresponding path program 5 times [2018-07-24 10:54:58,427 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:58,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:58,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:54:58,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:58,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:54:58,659 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:58,659 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 10:54:58,669 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:54:58,669 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:55:00,658 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-07-24 10:55:00,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:55:00,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:00,692 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:55:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:01,871 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:55:01,871 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 10:55:01,886 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-24 10:55:01,886 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:55:07,553 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-07-24 10:55:07,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:55:07,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:07,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:55:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:07,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:55:07,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10] total 18 [2018-07-24 10:55:07,628 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:55:07,628 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 10:55:07,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 10:55:07,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-07-24 10:55:07,629 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 10 states. [2018-07-24 10:55:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:55:08,068 INFO L93 Difference]: Finished difference Result 163 states and 176 transitions. [2018-07-24 10:55:08,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 10:55:08,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2018-07-24 10:55:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:55:08,071 INFO L225 Difference]: With dead ends: 163 [2018-07-24 10:55:08,071 INFO L226 Difference]: Without dead ends: 101 [2018-07-24 10:55:08,072 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 278 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-07-24 10:55:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-24 10:55:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2018-07-24 10:55:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-24 10:55:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2018-07-24 10:55:08,090 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 72 [2018-07-24 10:55:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:55:08,091 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2018-07-24 10:55:08,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 10:55:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2018-07-24 10:55:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-24 10:55:08,092 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:55:08,092 INFO L353 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] [2018-07-24 10:55:08,092 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:55:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1392392584, now seen corresponding path program 6 times [2018-07-24 10:55:08,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:55:08,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:55:08,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:55:08,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:55:08,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:55:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:55:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:08,349 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:55:08,349 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 10:55:08,358 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-24 10:55:08,358 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-24 10:55:20,804 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-07-24 10:55:20,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:55:20,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:20,819 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:55:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:23,328 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:55:23,328 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 10:55:23,343 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-24 10:55:23,344 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-24 10:55:48,003 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-07-24 10:55:48,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:55:48,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:48,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:55:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:48,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:55:48,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 20 [2018-07-24 10:55:48,084 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:55:48,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 10:55:48,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 10:55:48,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:55:48,086 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand 11 states. [2018-07-24 10:55:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:55:48,541 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2018-07-24 10:55:48,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 10:55:48,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2018-07-24 10:55:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:55:48,545 INFO L225 Difference]: With dead ends: 176 [2018-07-24 10:55:48,545 INFO L226 Difference]: Without dead ends: 109 [2018-07-24 10:55:48,546 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 289 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:55:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-24 10:55:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2018-07-24 10:55:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-24 10:55:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2018-07-24 10:55:48,562 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 75 [2018-07-24 10:55:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:55:48,562 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2018-07-24 10:55:48,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 10:55:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2018-07-24 10:55:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-24 10:55:48,564 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:55:48,564 INFO L353 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] [2018-07-24 10:55:48,564 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:55:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1231821129, now seen corresponding path program 7 times [2018-07-24 10:55:48,564 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:55:48,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:55:48,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:55:48,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:55:48,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:55:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:55:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 126 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:49,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:55:49,153 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 10:55:49,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:55:49,161 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:55:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:55:49,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:49,209 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:55:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 123 refuted. 3 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:53,896 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:55:53,896 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 10:55:53,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:55:53,911 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:55:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:55:54,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:54,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:55:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 123 refuted. 3 times theorem prover too weak. 64 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (19)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 10:55:54,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:55:54,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 22 [2018-07-24 10:55:54,315 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:55:54,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 10:55:54,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 10:55:54,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=320, Unknown=1, NotChecked=0, Total=462 [2018-07-24 10:55:54,318 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand 12 states. [2018-07-24 10:55:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:55:55,286 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2018-07-24 10:55:55,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 10:55:55,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2018-07-24 10:55:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:55:55,289 INFO L225 Difference]: With dead ends: 189 [2018-07-24 10:55:55,289 INFO L226 Difference]: Without dead ends: 117 [2018-07-24 10:55:55,289 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=141, Invalid=320, Unknown=1, NotChecked=0, Total=462 [2018-07-24 10:55:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-24 10:55:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2018-07-24 10:55:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-24 10:55:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2018-07-24 10:55:55,305 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 78 [2018-07-24 10:55:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:55:55,306 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2018-07-24 10:55:55,306 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 10:55:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2018-07-24 10:55:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-24 10:55:55,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:55:55,307 INFO L353 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] [2018-07-24 10:55:55,307 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:55:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2107143976, now seen corresponding path program 8 times [2018-07-24 10:55:55,308 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:55:55,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:55:55,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:55:55,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:55:55,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:55:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:55:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:55:55,535 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:55:55,535 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 10:55:55,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:55:55,542 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:55:55,571 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:55:55,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:55:55,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:55:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:55:55,590 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:56:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 149 refuted. 6 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:56:07,063 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:56:07,063 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 10:56:07,079 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-24 10:56:07,079 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-24 10:56:07,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-24 10:56:07,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:56:07,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:56:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:56:07,208 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:56:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 149 refuted. 6 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:56:07,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:56:07,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13] total 24 [2018-07-24 10:56:07,461 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:56:07,461 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 10:56:07,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 10:56:07,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=383, Unknown=3, NotChecked=0, Total=552 [2018-07-24 10:56:07,462 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 13 states. [2018-07-24 10:56:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:56:08,741 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2018-07-24 10:56:08,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 10:56:08,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2018-07-24 10:56:08,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:56:08,745 INFO L225 Difference]: With dead ends: 202 [2018-07-24 10:56:08,745 INFO L226 Difference]: Without dead ends: 125 [2018-07-24 10:56:08,746 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=166, Invalid=383, Unknown=3, NotChecked=0, Total=552 [2018-07-24 10:56:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-24 10:56:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2018-07-24 10:56:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-24 10:56:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2018-07-24 10:56:08,762 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 81 [2018-07-24 10:56:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:56:08,762 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2018-07-24 10:56:08,762 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 10:56:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2018-07-24 10:56:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-24 10:56:08,763 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:56:08,763 INFO L353 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] [2018-07-24 10:56:08,764 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:56:08,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1774011671, now seen corresponding path program 9 times [2018-07-24 10:56:08,764 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:56:08,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:56:08,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-24 10:56:08,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:56:08,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:56:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:56:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 8 proven. 187 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-07-24 10:56:09,003 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:56:09,003 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 10:56:09,010 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-24 10:56:09,010 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-24 10:56:22,736 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-07-24 10:56:22,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-24 10:56:22,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:56:23,031 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-07-24 10:56:23,031 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:56:23,203 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 [2018-07-24 10:56:23,203 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-07-24 10:56:23,209 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-07-24 10:56:23,209 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:91, output treesize:16 [2018-07-24 10:56:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 10:56:23,286 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:56:25,346 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 [2018-07-24 10:56:29,417 WARN L169 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 10:56:37,572 WARN L169 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 10:56:45,721 WARN L169 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 24 [2018-07-24 10:56:55,843 WARN L1032 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_main_~index~0 2) 4294967296)) (.cse1 (+ c_main_~index~0 1))) (or (= (mod (select c_main_~array~0 .cse0) 4294967296) 0) (< 0 (mod .cse1 2)) (<= 1000 (mod (+ c_main_~index~0 3) 4294967296)) (<= 1000 .cse0) (not (= (mod (select c_main_~array~0 (mod .cse1 4294967296)) 4294967296) 0)))) is different from true [2018-07-24 10:57:08,007 WARN L169 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 30 [2018-07-24 10:57:10,022 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:57:10,022 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:57:10,023 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:57:10,024 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:57:10,025 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:57:12,033 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (select v_main_~array~0_BEFORE_CALL_19 (mod v_main_~index~0_BEFORE_CALL_23 4294967296)) (select v_main_~array~0_BEFORE_CALL_19 (mod (+ v_main_~index~0_BEFORE_CALL_23 1) 4294967296))) [2018-07-24 10:57:12,036 INFO L303 Elim1Store]: Index analysis took 2016 ms [2018-07-24 10:57:12,038 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 53 [2018-07-24 10:57:12,040 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-07-24 10:57:20,106 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-07-24 10:57:20,107 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:26 [2018-07-24 10:57:22,115 WARN L1032 $PredicateComparison]: unable to prove that (or (forall ((v_main_~index~0_BEFORE_CALL_23 Int)) (or (<= 1000 (mod (+ v_main_~index~0_BEFORE_CALL_23 2) 4294967296)) (< 0 (mod (+ v_main_~index~0_BEFORE_CALL_23 1) 2)) (<= 1000 (mod (+ v_main_~index~0_BEFORE_CALL_23 3) 4294967296)))) (not (= 0 |c___U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_crafted_simple_array_index_value_true_unreach_call__true_termination_i____VERIFIER_assert_#in~cond|))) is different from true [2018-07-24 10:57:48,313 WARN L169 SmtUtils]: Spent 18.11 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-07-24 10:57:50,323 WARN L1032 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_main_~index~0 1) 4294967296))) (or (< 0 (mod c_main_~index~0 2)) (<= 1000 (mod (+ c_main_~index~0 4) 4294967296)) (not (= (mod (select c_main_~array~0 (mod (+ c_main_~index~0 2) 4294967296)) 4294967296) 0)) (= 0 (mod (select c_main_~array~0 (mod (+ c_main_~index~0 3) 4294967296)) 4294967296)) (= (mod (select c_main_~array~0 .cse0) 4294967296) 0) (<= 1000 .cse0))) is different from true [2018-07-24 10:57:58,520 WARN L169 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 37 [2018-07-24 10:58:00,536 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,537 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,538 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,538 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,539 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,539 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,540 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,545 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,546 INFO L682 Elim1Store]: detected equality via solver [2018-07-24 10:58:00,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 91 [2018-07-24 10:58:00,552 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. Received shutdown request... [2018-07-24 10:58:04,588 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 10:58:04,789 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:58:04,789 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 10:58:04,795 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 10:58:04,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 10:58:04 BoogieIcfgContainer [2018-07-24 10:58:04,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 10:58:04,796 INFO L168 Benchmark]: Toolchain (without parser) took 286129.11 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -434.3 MB). Peak memory consumption was 429.2 MB. Max. memory is 7.1 GB. [2018-07-24 10:58:04,797 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:58:04,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 10:58:04,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:58:04,798 INFO L168 Benchmark]: Boogie Preprocessor took 39.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:58:04,799 INFO L168 Benchmark]: RCFGBuilder took 432.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-07-24 10:58:04,800 INFO L168 Benchmark]: TraceAbstraction took 285361.08 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 104.9 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 367.0 MB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. [2018-07-24 10:58:04,803 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 432.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 285361.08 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 104.9 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 367.0 MB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 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 backward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 31. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. TIMEOUT Result, 285.2s OverallTime, 13 OverallIterations, 12 TraceHistogramMax, 8.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 445 SDtfs, 291 SDslu, 2425 SDs, 0 SdLazy, 3500 SolverSat, 133 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2418 GetRequests, 2185 SyntacticMatches, 25 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 85.9s 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, 0.0s AbstIntTime, 0 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, 71.3s SatisfiabilityAnalysisTime, 88.3s InterpolantComputationTime, 1784 NumberOfCodeBlocks, 1784 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 2902 ConstructedInterpolants, 62 QuantifiedInterpolants, 655014 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1998 ConjunctsInSsa, 333 ConjunctsInUnsatCore, 52 InterpolantComputations, 2 PerfectInterpolantSequences, 2381/5510 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_10-58-04-823.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/simple_array_index_value_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_10-58-04-823.csv Completed graceful shutdown