java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:54:48,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:54:48,511 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:54:48,523 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:54:48,523 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:54:48,525 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:54:48,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:54:48,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:54:48,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:54:48,531 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:54:48,532 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:54:48,532 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:54:48,533 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:54:48,534 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:54:48,535 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:54:48,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:54:48,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:54:48,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:54:48,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:54:48,542 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:54:48,543 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:54:48,544 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:54:48,547 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:54:48,555 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 11:54:48,572 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:54:48,572 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:54:48,573 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:54:48,573 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:54:48,574 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:54:48,575 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:54:48,575 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:54:48,576 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:54:48,576 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:54:48,576 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:54:48,576 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:54:48,576 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:54:48,576 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:54:48,577 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:54:48,577 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:54:48,577 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:54:48,578 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:54:48,578 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:54:48,578 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:54:48,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:54:48,578 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:54:48,578 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:54:48,580 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:54:48,580 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:54:48,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:54:48,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:54:48,581 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:54:48,581 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:54:48,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:54:48,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:54:48,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:54:48,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:54:48,665 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:54:48,666 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-10-24 11:54:48,725 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a02d1a00f/3c3d1f4a46f9452a9808c001d2082134/FLAG898638804 [2018-10-24 11:54:49,131 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:54:49,132 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call1_true-termination.i [2018-10-24 11:54:49,138 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a02d1a00f/3c3d1f4a46f9452a9808c001d2082134/FLAG898638804 [2018-10-24 11:54:49,152 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a02d1a00f/3c3d1f4a46f9452a9808c001d2082134 [2018-10-24 11:54:49,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:54:49,162 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:54:49,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:54:49,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:54:49,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:54:49,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49, skipping insertion in model container [2018-10-24 11:54:49,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:54:49,203 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:54:49,380 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:54:49,384 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:54:49,405 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:54:49,426 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:54:49,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49 WrapperNode [2018-10-24 11:54:49,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:54:49,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:54:49,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:54:49,428 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:54:49,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:54:49,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:54:49,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:54:49,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:54:49,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... [2018-10-24 11:54:49,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:54:49,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:54:49,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:54:49,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:54:49,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:54:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:54:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-24 11:54:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 11:54:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 11:54:50,002 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:54:50,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:50 BoogieIcfgContainer [2018-10-24 11:54:50,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:54:50,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:54:50,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:54:50,007 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:54:50,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:54:49" (1/3) ... [2018-10-24 11:54:50,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71684c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:50, skipping insertion in model container [2018-10-24 11:54:50,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:49" (2/3) ... [2018-10-24 11:54:50,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71684c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:50, skipping insertion in model container [2018-10-24 11:54:50,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:50" (3/3) ... [2018-10-24 11:54:50,011 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call1_true-termination.i [2018-10-24 11:54:50,021 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:54:50,028 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:54:50,045 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:54:50,077 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:54:50,078 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:54:50,078 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:54:50,078 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:54:50,078 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:54:50,079 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:54:50,079 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:54:50,079 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:54:50,079 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:54:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-10-24 11:54:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 11:54:50,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:50,104 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:50,107 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:50,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1645090688, now seen corresponding path program 1 times [2018-10-24 11:54:50,115 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:50,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:50,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:50,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:50,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:50,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:54:50,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:54:50,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:54:50,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:54:50,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:54:50,270 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-10-24 11:54:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:50,291 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2018-10-24 11:54:50,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:54:50,293 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-24 11:54:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:50,303 INFO L225 Difference]: With dead ends: 47 [2018-10-24 11:54:50,303 INFO L226 Difference]: Without dead ends: 22 [2018-10-24 11:54:50,306 INFO L605 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 [2018-10-24 11:54:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-24 11:54:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-24 11:54:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-24 11:54:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-10-24 11:54:50,344 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2018-10-24 11:54:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:50,345 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-10-24 11:54:50,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:54:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-10-24 11:54:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 11:54:50,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:50,346 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:50,347 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:50,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash -22656602, now seen corresponding path program 1 times [2018-10-24 11:54:50,347 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:50,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:50,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:50,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:50,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:50,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:54:50,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 11:54:50,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 11:54:50,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 11:54:50,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:54:50,474 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 3 states. [2018-10-24 11:54:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:50,753 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-10-24 11:54:50,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 11:54:50,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-24 11:54:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:50,756 INFO L225 Difference]: With dead ends: 49 [2018-10-24 11:54:50,756 INFO L226 Difference]: Without dead ends: 32 [2018-10-24 11:54:50,758 INFO L605 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 [2018-10-24 11:54:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-24 11:54:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2018-10-24 11:54:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-24 11:54:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-10-24 11:54:50,770 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 13 [2018-10-24 11:54:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:50,770 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-10-24 11:54:50,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 11:54:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-10-24 11:54:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 11:54:50,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:50,771 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:50,773 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:50,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:50,774 INFO L82 PathProgramCache]: Analyzing trace with hash -137382522, now seen corresponding path program 1 times [2018-10-24 11:54:50,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:50,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:50,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:50,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:50,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:50,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:50,947 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:50,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:51,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:51,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 11:54:51,057 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 8 treesize of output 7 [2018-10-24 11:54:51,057 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:54:51,070 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:54:51,082 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:54:51,083 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-10-24 11:54:51,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-24 11:54:51,316 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-24 11:54:51,317 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:54:51,318 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:54:51,321 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:54:51,322 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-10-24 11:54:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:51,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:51,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 9 [2018-10-24 11:54:51,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:54:51,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:54:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:54:51,588 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2018-10-24 11:54:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:54,186 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2018-10-24 11:54:54,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 11:54:54,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-24 11:54:54,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:54,191 INFO L225 Difference]: With dead ends: 93 [2018-10-24 11:54:54,191 INFO L226 Difference]: Without dead ends: 73 [2018-10-24 11:54:54,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:54:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-24 11:54:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2018-10-24 11:54:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-24 11:54:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2018-10-24 11:54:54,206 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2018-10-24 11:54:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:54,206 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2018-10-24 11:54:54,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:54:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2018-10-24 11:54:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 11:54:54,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:54,208 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:54,208 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:54,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1145283002, now seen corresponding path program 2 times [2018-10-24 11:54:54,209 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:54,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:54,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:54,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:54,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:54,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:54,392 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:54:54,407 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:54:54,460 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:54:54,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:54,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:54,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:54,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-24 11:54:54,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 11:54:54,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 11:54:54,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 11:54:54,652 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 6 states. [2018-10-24 11:54:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:55,001 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2018-10-24 11:54:55,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 11:54:55,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-10-24 11:54:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:55,006 INFO L225 Difference]: With dead ends: 99 [2018-10-24 11:54:55,006 INFO L226 Difference]: Without dead ends: 62 [2018-10-24 11:54:55,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 11:54:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-24 11:54:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2018-10-24 11:54:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-24 11:54:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2018-10-24 11:54:55,018 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 22 [2018-10-24 11:54:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:55,018 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2018-10-24 11:54:55,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 11:54:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2018-10-24 11:54:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-24 11:54:55,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:55,019 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:55,020 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:55,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:55,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2061655752, now seen corresponding path program 3 times [2018-10-24 11:54:55,020 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:55,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:55,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:55,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:54:55,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:55,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:55,186 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-24 11:54:55,203 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:54:55,290 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-24 11:54:55,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:55,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:55,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:55,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-24 11:54:55,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:54:55,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:54:55,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:54:55,353 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 7 states. [2018-10-24 11:54:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:55,662 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2018-10-24 11:54:55,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:54:55,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-10-24 11:54:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:55,664 INFO L225 Difference]: With dead ends: 113 [2018-10-24 11:54:55,665 INFO L226 Difference]: Without dead ends: 72 [2018-10-24 11:54:55,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:54:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-24 11:54:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2018-10-24 11:54:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-24 11:54:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2018-10-24 11:54:55,676 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 25 [2018-10-24 11:54:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:55,677 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2018-10-24 11:54:55,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:54:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2018-10-24 11:54:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 11:54:55,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:55,678 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:55,678 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:55,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1573423354, now seen corresponding path program 4 times [2018-10-24 11:54:55,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:55,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:55,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:55,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:54:55,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:55,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:55,993 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:54:56,003 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 11:54:56,050 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 11:54:56,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:56,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:56,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:56,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-24 11:54:56,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 11:54:56,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 11:54:56,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:54:56,198 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 8 states. [2018-10-24 11:54:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:56,650 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2018-10-24 11:54:56,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 11:54:56,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-10-24 11:54:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:56,653 INFO L225 Difference]: With dead ends: 130 [2018-10-24 11:54:56,653 INFO L226 Difference]: Without dead ends: 82 [2018-10-24 11:54:56,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:54:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-24 11:54:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2018-10-24 11:54:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-24 11:54:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2018-10-24 11:54:56,664 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 28 [2018-10-24 11:54:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:56,665 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2018-10-24 11:54:56,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 11:54:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2018-10-24 11:54:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 11:54:56,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:56,666 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:56,666 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:56,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:56,667 INFO L82 PathProgramCache]: Analyzing trace with hash -909668856, now seen corresponding path program 5 times [2018-10-24 11:54:56,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:56,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:56,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:56,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:54:56,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:56,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:56,852 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:56,864 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 11:54:57,892 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-24 11:54:57,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:57,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:57,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:57,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-24 11:54:57,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:54:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:54:57,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:54:57,955 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 9 states. [2018-10-24 11:54:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:58,354 INFO L93 Difference]: Finished difference Result 147 states and 166 transitions. [2018-10-24 11:54:58,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:54:58,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-10-24 11:54:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:58,356 INFO L225 Difference]: With dead ends: 147 [2018-10-24 11:54:58,356 INFO L226 Difference]: Without dead ends: 92 [2018-10-24 11:54:58,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:54:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-24 11:54:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2018-10-24 11:54:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-24 11:54:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2018-10-24 11:54:58,369 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 31 [2018-10-24 11:54:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:58,370 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2018-10-24 11:54:58,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:54:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2018-10-24 11:54:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-24 11:54:58,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:58,371 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:58,371 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:58,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:58,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1028849722, now seen corresponding path program 6 times [2018-10-24 11:54:58,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:58,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:58,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:58,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:54:58,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:58,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:58,659 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:54:58,667 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 11:54:58,941 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-24 11:54:58,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:58,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:58,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:58,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-24 11:54:58,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 11:54:58,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 11:54:58,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:54:58,998 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 10 states. [2018-10-24 11:54:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:59,618 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2018-10-24 11:54:59,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 11:54:59,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-24 11:54:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:59,621 INFO L225 Difference]: With dead ends: 164 [2018-10-24 11:54:59,621 INFO L226 Difference]: Without dead ends: 102 [2018-10-24 11:54:59,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:54:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-24 11:54:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2018-10-24 11:54:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-24 11:54:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2018-10-24 11:54:59,633 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 34 [2018-10-24 11:54:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:59,634 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2018-10-24 11:54:59,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 11:54:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2018-10-24 11:54:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 11:54:59,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:59,635 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:59,636 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:59,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash 391925064, now seen corresponding path program 7 times [2018-10-24 11:54:59,636 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:59,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:59,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:59,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:54:59,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:59,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:59,965 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:59,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:55:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:55:00,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:55:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:55:00,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:55:00,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-24 11:55:00,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 11:55:00,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 11:55:00,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-24 11:55:00,058 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 11 states. [2018-10-24 11:55:00,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:55:00,698 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2018-10-24 11:55:00,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 11:55:00,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-10-24 11:55:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:55:00,701 INFO L225 Difference]: With dead ends: 181 [2018-10-24 11:55:00,701 INFO L226 Difference]: Without dead ends: 112 [2018-10-24 11:55:00,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-24 11:55:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-24 11:55:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2018-10-24 11:55:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-24 11:55:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2018-10-24 11:55:00,713 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 37 [2018-10-24 11:55:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:55:00,714 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2018-10-24 11:55:00,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 11:55:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2018-10-24 11:55:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 11:55:00,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:55:00,715 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:55:00,715 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:55:00,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:55:00,716 INFO L82 PathProgramCache]: Analyzing trace with hash -209127290, now seen corresponding path program 8 times [2018-10-24 11:55:00,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:55:00,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:55:00,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:55:00,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:55:00,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:55:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:55:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:55:01,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:55:01,380 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:55:01,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:55:01,431 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:55:01,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:55:01,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:55:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:55:01,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:55:01,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-24 11:55:01,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 11:55:01,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 11:55:01,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:55:01,482 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 12 states. [2018-10-24 11:55:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:55:02,285 INFO L93 Difference]: Finished difference Result 198 states and 223 transitions. [2018-10-24 11:55:02,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 11:55:02,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2018-10-24 11:55:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:55:02,288 INFO L225 Difference]: With dead ends: 198 [2018-10-24 11:55:02,288 INFO L226 Difference]: Without dead ends: 122 [2018-10-24 11:55:02,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-10-24 11:55:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-24 11:55:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2018-10-24 11:55:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-24 11:55:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2018-10-24 11:55:02,310 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 40 [2018-10-24 11:55:02,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:55:02,311 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2018-10-24 11:55:02,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 11:55:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2018-10-24 11:55:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 11:55:02,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:55:02,316 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:55:02,316 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:55:02,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:55:02,316 INFO L82 PathProgramCache]: Analyzing trace with hash -441148280, now seen corresponding path program 9 times [2018-10-24 11:55:02,317 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:55:02,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:55:02,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:55:02,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:55:02,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:55:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:55:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:55:02,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:55:02,990 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:55:02,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:55:05,520 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-24 11:55:05,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:55:05,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:55:05,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2018-10-24 11:55:05,601 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 16 treesize of output 15 [2018-10-24 11:55:05,601 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,608 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,611 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 28 [2018-10-24 11:55:05,614 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 16 treesize of output 15 [2018-10-24 11:55:05,614 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,622 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,646 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,646 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:103, output treesize:22 [2018-10-24 11:55:05,739 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-10-24 11:55:05,741 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:05,752 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-10-24 11:55:05,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,767 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,778 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,779 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:14 [2018-10-24 11:55:05,806 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-10-24 11:55:05,809 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:05,811 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-10-24 11:55:05,811 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,821 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,831 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,832 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:14 [2018-10-24 11:55:05,859 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-10-24 11:55:05,861 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:05,862 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-24 11:55:05,863 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,872 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,878 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,878 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2018-10-24 11:55:05,919 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-10-24 11:55:05,919 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:05,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-10-24 11:55:06,014 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2018-10-24 11:55:06,015 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-24 11:55:06,188 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 11:55:06,210 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 11:55:06,210 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:97, output treesize:34 [2018-10-24 11:55:06,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2018-10-24 11:55:06,409 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 35 [2018-10-24 11:55:06,410 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-24 11:55:06,432 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 11:55:06,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2018-10-24 11:55:06,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 64 [2018-10-24 11:55:06,575 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 8 xjuncts. [2018-10-24 11:55:06,642 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 11:55:06,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 5 xjuncts. [2018-10-24 11:55:06,727 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:82, output treesize:113 [2018-10-24 11:55:06,941 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-10-24 11:55:06,941 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:06,946 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 35 [2018-10-24 11:55:06,950 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 16 treesize of output 15 [2018-10-24 11:55:06,950 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:08,964 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:15,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2018-10-24 11:55:17,148 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:17,150 INFO L303 Elim1Store]: Index analysis took 2011 ms [2018-10-24 11:55:17,151 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 33 [2018-10-24 11:55:17,151 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:19,174 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:21,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2018-10-24 11:55:23,248 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:23,249 INFO L303 Elim1Store]: Index analysis took 2011 ms [2018-10-24 11:55:23,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-10-24 11:55:23,250 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:29,303 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:55:41,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-24 11:55:41,480 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:397, output treesize:97 [2018-10-24 11:55:47,763 WARN L179 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 34 [2018-10-24 11:55:49,792 INFO L303 Elim1Store]: Index analysis took 2023 ms [2018-10-24 11:55:49,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2018-10-24 11:55:49,802 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:49,803 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:49,806 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:55:49,817 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 84 [2018-10-24 11:55:49,818 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:55:51,851 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:56:00,003 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= v_prenex_15 (select (select v_prenex_14 |ULTIMATE.start_main_~#array~0.base|) (+ (* 4 (mod ULTIMATE.start_main_~index~0 4294967296)) |ULTIMATE.start_main_~#array~0.offset|))) [2018-10-24 11:56:00,006 INFO L303 Elim1Store]: Index analysis took 2015 ms [2018-10-24 11:56:00,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2018-10-24 11:56:04,023 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#array~0.offset| (* 4 (mod (+ ULTIMATE.start_main_~index~0 4294967295) 4294967296))) |ULTIMATE.start_main_~#array~0.offset|) [2018-10-24 11:56:04,024 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:06,030 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (+ (* 4 (mod ULTIMATE.start_main_~index~0 4294967296)) |ULTIMATE.start_main_~#array~0.offset|) |ULTIMATE.start_main_~#array~0.offset|) [2018-10-24 11:56:06,031 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:06,035 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:08,044 WARN L686 Elim1Store]: solver failed to check if following not equals relation is implied: (= (select v_arrayElimCell_15 (+ |ULTIMATE.start_main_~#array~0.offset| (* 4 (mod (+ ULTIMATE.start_main_~index~0 4294967295) 4294967296)))) (select v_arrayElimCell_15 |ULTIMATE.start_main_~#array~0.offset|)) [2018-10-24 11:56:10,054 WARN L686 Elim1Store]: solver failed to check if following not equals relation is implied: (= v_prenex_15 (select v_arrayElimCell_15 |ULTIMATE.start_main_~#array~0.offset|)) [2018-10-24 11:56:10,062 INFO L303 Elim1Store]: Index analysis took 10053 ms [2018-10-24 11:56:10,063 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 80 [2018-10-24 11:56:10,064 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:56:12,102 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:56:18,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 44 [2018-10-24 11:56:18,272 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:18,274 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 51 [2018-10-24 11:56:18,275 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-24 11:56:18,293 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:56:22,409 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-24 11:56:22,409 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:177, output treesize:151 [2018-10-24 11:56:32,596 WARN L179 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 40 [2018-10-24 11:56:46,829 WARN L179 SmtUtils]: Spent 12.14 s on a formula simplification that was a NOOP. DAG size: 40 [2018-10-24 11:56:46,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 79 [2018-10-24 11:56:46,870 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:46,875 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:46,877 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:46,878 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 82 [2018-10-24 11:56:46,878 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:56:52,933 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:56:54,944 INFO L303 Elim1Store]: Index analysis took 2010 ms [2018-10-24 11:56:54,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 80 [2018-10-24 11:56:54,952 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:54,954 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:54,957 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:56:54,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 82 [2018-10-24 11:56:54,958 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:56:57,002 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:57:26,983 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2018-10-24 11:57:29,011 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:57:29,015 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:57:29,016 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:57:29,020 INFO L303 Elim1Store]: Index analysis took 2036 ms [2018-10-24 11:57:29,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 80 [2018-10-24 11:57:29,023 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-24 11:57:33,109 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:57:57,469 WARN L686 Elim1Store]: solver failed to check if following not equals relation is implied: (= (select (select v_prenex_17 |ULTIMATE.start_main_~#array~0.base|) (+ (* 4 (mod ULTIMATE.start_main_~index~0 4294967296)) |ULTIMATE.start_main_~#array~0.offset|)) (mod ULTIMATE.start_main_~index~0 2)) [2018-10-24 11:57:57,470 INFO L303 Elim1Store]: Index analysis took 2008 ms [2018-10-24 11:57:57,471 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 44 [2018-10-24 11:57:57,480 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:57:57,481 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 51 [2018-10-24 11:57:57,482 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-24 11:58:05,521 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:58:37,921 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-24 11:58:37,921 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:715, output treesize:198 [2018-10-24 11:58:56,205 WARN L179 SmtUtils]: Spent 14.16 s on a formula simplification that was a NOOP. DAG size: 46 [2018-10-24 11:59:16,646 WARN L179 SmtUtils]: Spent 16.24 s on a formula simplification that was a NOOP. DAG size: 50 [2018-10-24 11:59:18,688 INFO L303 Elim1Store]: Index analysis took 2028 ms [2018-10-24 11:59:18,689 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 77 [2018-10-24 11:59:18,700 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:18,708 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,715 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#array~0.offset| (* 4 (mod (+ ULTIMATE.start_main_~index~0 4294967295) 4294967296))) |ULTIMATE.start_write~int_#ptr.offset|) [2018-10-24 11:59:20,718 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,735 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,736 INFO L303 Elim1Store]: Index analysis took 2044 ms [2018-10-24 11:59:20,737 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 110 [2018-10-24 11:59:20,737 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:59:20,863 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:59:20,885 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 76 [2018-10-24 11:59:20,912 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,915 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,920 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,926 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:59:20,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 110 [2018-10-24 11:59:20,927 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:59:27,001 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. Received shutdown request... [2018-10-24 11:59:37,380 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 11:59:37,581 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:59:37,581 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 11:59:37,586 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 11:59:37,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:59:37 BoogieIcfgContainer [2018-10-24 11:59:37,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:59:37,587 INFO L168 Benchmark]: Toolchain (without parser) took 288425.78 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -428.0 MB). Peak memory consumption was 446.0 MB. Max. memory is 7.1 GB. [2018-10-24 11:59:37,588 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:59:37,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.68 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. [2018-10-24 11:59:37,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.88 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. [2018-10-24 11:59:37,590 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 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. [2018-10-24 11:59:37,590 INFO L168 Benchmark]: RCFGBuilder took 511.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2018-10-24 11:59:37,591 INFO L168 Benchmark]: TraceAbstraction took 287582.67 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 127.4 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 353.5 MB). Peak memory consumption was 480.9 MB. Max. memory is 7.1 GB. [2018-10-24 11:59:37,594 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.68 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 37.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.12 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 511.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 287582.67 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 127.4 MB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 353.5 MB). Peak memory consumption was 480.9 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 44 with TraceHistMax 11,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 130. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. TIMEOUT Result, 287.5s OverallTime, 11 OverallIterations, 11 TraceHistogramMax, 6.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 393 SDtfs, 301 SDslu, 1863 SDs, 0 SdLazy, 2845 SolverSat, 75 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 224 SyntacticMatches, 16 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=10, 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, 10 MinimizatonAttempts, 63 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 63631 SizeOfPredicates, 18 NumberOfNonLiveVariables, 946 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 0/886 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown