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/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:53:45,568 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:53:45,570 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:53:45,585 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:53:45,585 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:53:45,586 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:53:45,588 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:53:45,589 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:53:45,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:53:45,592 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:53:45,593 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:53:45,593 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:53:45,594 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:53:45,595 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:53:45,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:53:45,597 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:53:45,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:53:45,600 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:53:45,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:53:45,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:53:45,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:53:45,607 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:53:45,609 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:53:45,625 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:53:45,657 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:53:45,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:53:45,659 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:53:45,660 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:53:45,660 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:53:45,660 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:53:45,660 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:53:45,660 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:53:45,661 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:53:45,661 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:53:45,661 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:53:45,661 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:53:45,662 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:53:45,664 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:53:45,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:53:45,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:53:45,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:53:45,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:53:45,665 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:53:45,665 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:53:45,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:53:45,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:53:45,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:53:45,666 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:53:45,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:53:45,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:53:45,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:53:45,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:53:45,668 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:53:45,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:53:45,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:53:45,669 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:53:45,669 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:53:45,669 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:53:45,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:53:45,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:53:45,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:53:45,757 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:53:45,757 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:53:45,758 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c [2018-10-24 18:53:45,821 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f4f448ba/bce3ed0f171d403fa3de149f386e825c/FLAG790faeccb [2018-10-24 18:53:46,554 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:53:46,555 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label49_false-unreach-call.c [2018-10-24 18:53:46,585 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f4f448ba/bce3ed0f171d403fa3de149f386e825c/FLAG790faeccb [2018-10-24 18:53:46,607 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f4f448ba/bce3ed0f171d403fa3de149f386e825c [2018-10-24 18:53:46,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:53:46,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:53:46,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:53:46,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:53:46,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:53:46,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:53:46" (1/1) ... [2018-10-24 18:53:46,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa2d024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:46, skipping insertion in model container [2018-10-24 18:53:46,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:53:46" (1/1) ... [2018-10-24 18:53:46,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:53:46,785 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:53:47,796 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:53:47,801 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:53:48,195 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:53:48,219 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:53:48,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48 WrapperNode [2018-10-24 18:53:48,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:53:48,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:53:48,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:53:48,221 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:53:48,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:53:48,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:53:48,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:53:48,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:53:48,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (1/1) ... [2018-10-24 18:53:48,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:53:48,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:53:48,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:53:48,983 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:53:48,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (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 18:53:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:53:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:53:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:53:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:53:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:53:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:53:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:53:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:53:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:53:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:54:01,469 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:54:01,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:54:01 BoogieIcfgContainer [2018-10-24 18:54:01,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:54:01,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:54:01,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:54:01,476 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:54:01,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:53:46" (1/3) ... [2018-10-24 18:54:01,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2257d974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:54:01, skipping insertion in model container [2018-10-24 18:54:01,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:53:48" (2/3) ... [2018-10-24 18:54:01,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2257d974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:54:01, skipping insertion in model container [2018-10-24 18:54:01,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:54:01" (3/3) ... [2018-10-24 18:54:01,484 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label49_false-unreach-call.c [2018-10-24 18:54:01,494 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:54:01,505 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:54:01,523 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:54:01,572 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:54:01,572 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:54:01,572 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:54:01,572 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:54:01,573 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:54:01,573 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:54:01,573 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:54:01,573 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:54:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 18:54:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 18:54:01,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:54:01,621 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:54:01,624 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:54:01,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:54:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash -549765852, now seen corresponding path program 1 times [2018-10-24 18:54:01,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:54:01,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:01,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:54:01,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:01,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:54:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:54:02,155 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 18:54:02,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:54:02,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:54:02,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:54:02,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:54:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:54:02,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:54:02,188 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 18:54:14,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:54:14,779 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-24 18:54:14,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:54:14,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-24 18:54:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:54:14,838 INFO L225 Difference]: With dead ends: 2166 [2018-10-24 18:54:14,841 INFO L226 Difference]: Without dead ends: 1556 [2018-10-24 18:54:14,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:54:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-24 18:54:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-24 18:54:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 18:54:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-24 18:54:15,064 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 22 [2018-10-24 18:54:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:54:15,064 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-24 18:54:15,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:54:15,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-24 18:54:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:54:15,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:54:15,073 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:54:15,073 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:54:15,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:54:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -157307670, now seen corresponding path program 1 times [2018-10-24 18:54:15,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:54:15,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:15,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:54:15,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:15,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:54:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:54:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:54:15,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:54:15,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:54:15,611 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:54:15,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:54:15,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:54:15,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:54:15,614 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-24 18:54:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:54:23,824 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-24 18:54:23,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:54:23,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-24 18:54:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:54:23,851 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 18:54:23,852 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 18:54:23,857 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:54:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 18:54:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-24 18:54:23,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-24 18:54:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-24 18:54:23,938 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 98 [2018-10-24 18:54:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:54:23,938 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-24 18:54:23,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:54:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-24 18:54:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 18:54:23,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:54:23,947 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:54:23,947 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:54:23,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:54:23,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1941736734, now seen corresponding path program 1 times [2018-10-24 18:54:23,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:54:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:23,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:54:23,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:23,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:54:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:54:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:54:24,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:54:24,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:54:24,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:54:24,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:54:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:54:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:54:24,409 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-24 18:54:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:54:31,112 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-24 18:54:31,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:54:31,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 18:54:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:54:31,132 INFO L225 Difference]: With dead ends: 4880 [2018-10-24 18:54:31,132 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 18:54:31,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:54:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 18:54:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-24 18:54:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 18:54:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-24 18:54:31,227 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 102 [2018-10-24 18:54:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:54:31,228 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-24 18:54:31,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:54:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-24 18:54:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 18:54:31,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:54:31,231 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:54:31,231 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:54:31,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:54:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 927500415, now seen corresponding path program 1 times [2018-10-24 18:54:31,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:54:31,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:31,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:54:31,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:31,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:54:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:54:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:54:31,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:54:31,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:54:31,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:54:31,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:54:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:54:31,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:54:31,448 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-24 18:54:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:54:36,713 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-24 18:54:36,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:54:36,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-24 18:54:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:54:36,739 INFO L225 Difference]: With dead ends: 5754 [2018-10-24 18:54:36,739 INFO L226 Difference]: Without dead ends: 2880 [2018-10-24 18:54:36,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:54:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-24 18:54:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-24 18:54:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 18:54:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-24 18:54:36,832 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 132 [2018-10-24 18:54:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:54:36,837 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-24 18:54:36,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:54:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-24 18:54:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 18:54:36,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:54:36,840 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:54:36,840 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:54:36,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:54:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1417902568, now seen corresponding path program 1 times [2018-10-24 18:54:36,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:54:36,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:36,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:54:36,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:36,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:54:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:54:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 18:54:37,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:54:37,610 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:54:37,612 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-24 18:54:37,614 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [786], [788], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:54:37,715 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:54:37,716 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:54:39,890 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:55:13,767 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:55:13,769 INFO L272 AbstractInterpreter]: Visited 97 different actions 468 times. Merged at 7 different actions 30 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 18:55:13,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:55:13,785 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:55:13,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:55:13,785 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 18:55:13,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:55:13,805 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:55:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:55:13,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:55:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 18:55:14,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:55:17,267 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-10-24 18:55:17,906 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-24 18:55:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:55:18,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:55:18,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-24 18:55:18,442 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:55:18,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:55:18,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:55:18,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-24 18:55:18,446 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 10 states. [2018-10-24 18:55:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:55:46,061 INFO L93 Difference]: Finished difference Result 15015 states and 20251 transitions. [2018-10-24 18:55:46,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 18:55:46,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2018-10-24 18:55:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:55:46,122 INFO L225 Difference]: With dead ends: 15015 [2018-10-24 18:55:46,122 INFO L226 Difference]: Without dead ends: 12141 [2018-10-24 18:55:46,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-24 18:55:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12141 states. [2018-10-24 18:55:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12141 to 12025. [2018-10-24 18:55:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12025 states. [2018-10-24 18:55:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 14823 transitions. [2018-10-24 18:55:46,470 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 14823 transitions. Word has length 186 [2018-10-24 18:55:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:55:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 12025 states and 14823 transitions. [2018-10-24 18:55:46,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 18:55:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 14823 transitions. [2018-10-24 18:55:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 18:55:46,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:55:46,478 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:55:46,478 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:55:46,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:55:46,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2086441019, now seen corresponding path program 1 times [2018-10-24 18:55:46,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:55:46,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:55:46,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:55:46,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:55:46,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:55:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:55:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 73 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 18:55:46,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:55:46,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:55:46,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-24 18:55:46,945 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [786], [788], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:55:46,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:55:46,952 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:55:49,304 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:55:49,607 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:55:49,608 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:55:49,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:55:49,645 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:55:51,552 INFO L232 lantSequenceWeakener]: Weakened 200 states. On average, predicates are now at 75.12% of their original sizes. [2018-10-24 18:55:51,552 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:55:52,169 INFO L413 sIntCurrentIteration]: We have 207 unified AI predicates [2018-10-24 18:55:52,169 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:55:52,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:55:52,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-24 18:55:52,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:55:52,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:55:52,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:55:52,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:55:52,171 INFO L87 Difference]: Start difference. First operand 12025 states and 14823 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 18:57:28,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:57:28,809 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:57:28,814 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:57:28,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:57:28 BoogieIcfgContainer [2018-10-24 18:57:28,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:57:28,816 INFO L168 Benchmark]: Toolchain (without parser) took 222194.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -183.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:57:28,820 INFO L168 Benchmark]: CDTParser took 0.20 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 18:57:28,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1595.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:57:28,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 473.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -942.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:57:28,822 INFO L168 Benchmark]: Boogie Preprocessor took 288.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:57:28,823 INFO L168 Benchmark]: RCFGBuilder took 12488.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 461.1 MB). Peak memory consumption was 461.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:57:28,824 INFO L168 Benchmark]: TraceAbstraction took 207342.31 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 115.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 18:57:28,830 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1595.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 473.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -942.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 288.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12488.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 461.1 MB). Peak memory consumption was 461.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207342.31 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 115.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 53). Cancelled while BasicCegarLoop was constructing difference of abstraction (12025states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (12744 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 157.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2105 SDtfs, 11571 SDslu, 2237 SDs, 0 SdLazy, 21638 SolverSat, 4325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 627 GetRequests, 577 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12025occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 38.8s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9953177257525082 AbsIntWeakeningRatio, 0.13043478260869565 AbsIntAvgWeakeningVarsNumRemoved, 1039.4830917874397 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 657 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 934 NumberOfCodeBlocks, 934 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1112 ConstructedInterpolants, 93 QuantifiedInterpolants, 1104627 SizeOfPredicates, 2 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 321/469 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown