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/Problem12_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:13:47,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:13:47,666 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:13:47,682 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:13:47,683 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:13:47,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:13:47,687 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:13:47,689 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:13:47,691 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:13:47,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:13:47,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:13:47,693 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:13:47,694 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:13:47,695 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:13:47,696 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:13:47,697 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:13:47,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:13:47,700 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:13:47,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:13:47,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:13:47,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:13:47,706 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:13:47,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:13:47,717 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 [2018-10-23 22:13:47,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:13:47,745 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:13:47,745 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:13:47,746 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:13:47,746 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:13:47,746 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:13:47,746 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:13:47,746 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:13:47,747 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:13:47,748 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:13:47,748 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:13:47,748 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:13:47,749 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:13:47,749 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:13:47,749 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:13:47,749 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:13:47,749 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:13:47,750 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:13:47,751 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:13:47,751 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:13:47,751 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:13:47,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:13:47,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:13:47,752 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:13:47,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:13:47,752 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:13:47,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:13:47,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:13:47,753 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:13:47,753 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:13:47,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:13:47,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:13:47,754 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:13:47,754 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:13:47,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:13:47,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:13:47,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:13:47,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:13:47,824 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:13:47,825 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c [2018-10-23 22:13:47,895 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3d28d799/f560d2ba1c6944edacac9772eb6e2809/FLAG87c5c5534 [2018-10-23 22:13:48,688 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:13:48,689 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c [2018-10-23 22:13:48,725 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3d28d799/f560d2ba1c6944edacac9772eb6e2809/FLAG87c5c5534 [2018-10-23 22:13:48,746 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3d28d799/f560d2ba1c6944edacac9772eb6e2809 [2018-10-23 22:13:48,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:13:48,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:13:48,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:13:48,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:13:48,768 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:13:48,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:48" (1/1) ... [2018-10-23 22:13:48,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:48, skipping insertion in model container [2018-10-23 22:13:48,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:48" (1/1) ... [2018-10-23 22:13:48,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:13:48,939 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:13:50,296 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:13:50,301 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:13:50,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:13:50,910 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:13:50,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50 WrapperNode [2018-10-23 22:13:50,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:13:50,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:13:50,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:13:50,913 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:13:50,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:50,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:13:51,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:13:51,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:13:51,420 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:13:51,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (1/1) ... [2018-10-23 22:13:51,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:13:51,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:13:51,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:13:51,684 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:13:51,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (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 [2018-10-23 22:13:51,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:13:51,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:13:51,755 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:13:51,755 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:13:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:13:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:13:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:13:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:13:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:13:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:13:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:13:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:13:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:13:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:14:03,913 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:14:03,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:14:03 BoogieIcfgContainer [2018-10-23 22:14:03,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:14:03,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:14:03,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:14:03,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:14:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:13:48" (1/3) ... [2018-10-23 22:14:03,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb78536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:14:03, skipping insertion in model container [2018-10-23 22:14:03,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:50" (2/3) ... [2018-10-23 22:14:03,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb78536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:14:03, skipping insertion in model container [2018-10-23 22:14:03,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:14:03" (3/3) ... [2018-10-23 22:14:03,922 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label25_false-unreach-call.c [2018-10-23 22:14:03,932 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:14:03,942 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:14:03,961 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:14:04,027 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:14:04,027 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:14:04,027 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:14:04,028 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:14:04,028 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:14:04,028 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:14:04,028 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:14:04,028 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:14:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-23 22:14:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-23 22:14:04,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:04,097 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, 1, 1] [2018-10-23 22:14:04,100 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:04,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:04,106 INFO L82 PathProgramCache]: Analyzing trace with hash -82660212, now seen corresponding path program 1 times [2018-10-23 22:14:04,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:04,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:04,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:04,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:04,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:04,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:04,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:14:04,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:04,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:14:04,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:14:04,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:14:04,586 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-23 22:14:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:12,521 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-23 22:14:12,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:14:12,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-10-23 22:14:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:12,571 INFO L225 Difference]: With dead ends: 2446 [2018-10-23 22:14:12,571 INFO L226 Difference]: Without dead ends: 1604 [2018-10-23 22:14:12,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:14:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-23 22:14:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-23 22:14:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-23 22:14:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-23 22:14:12,796 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 24 [2018-10-23 22:14:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:12,796 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-23 22:14:12,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:14:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-23 22:14:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:14:12,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:12,808 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:14:12,808 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:12,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash -664739510, now seen corresponding path program 1 times [2018-10-23 22:14:12,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:12,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:12,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:12,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:12,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:13,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:13,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:14:13,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:13,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:14:13,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:14:13,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:14:13,109 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 5 states. [2018-10-23 22:14:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:28,942 INFO L93 Difference]: Finished difference Result 4873 states and 9189 transitions. [2018-10-23 22:14:28,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:14:28,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-23 22:14:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:28,974 INFO L225 Difference]: With dead ends: 4873 [2018-10-23 22:14:28,974 INFO L226 Difference]: Without dead ends: 3275 [2018-10-23 22:14:28,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:14:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-23 22:14:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-23 22:14:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-23 22:14:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5451 transitions. [2018-10-23 22:14:29,106 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5451 transitions. Word has length 102 [2018-10-23 22:14:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:29,107 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 5451 transitions. [2018-10-23 22:14:29,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:14:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5451 transitions. [2018-10-23 22:14:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 22:14:29,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:29,114 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:14:29,115 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:29,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2031355331, now seen corresponding path program 1 times [2018-10-23 22:14:29,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:29,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:29,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:29,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:29,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:29,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:29,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:14:29,411 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:29,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:14:29,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:14:29,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:14:29,413 INFO L87 Difference]: Start difference. First operand 3241 states and 5451 transitions. Second operand 6 states. [2018-10-23 22:14:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:44,977 INFO L93 Difference]: Finished difference Result 9767 states and 16545 transitions. [2018-10-23 22:14:44,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:14:44,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-23 22:14:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:45,019 INFO L225 Difference]: With dead ends: 9767 [2018-10-23 22:14:45,019 INFO L226 Difference]: Without dead ends: 6532 [2018-10-23 22:14:45,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:14:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2018-10-23 22:14:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6456. [2018-10-23 22:14:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6456 states. [2018-10-23 22:14:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 10247 transitions. [2018-10-23 22:14:45,214 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 10247 transitions. Word has length 115 [2018-10-23 22:14:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:45,215 INFO L481 AbstractCegarLoop]: Abstraction has 6456 states and 10247 transitions. [2018-10-23 22:14:45,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:14:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 10247 transitions. [2018-10-23 22:14:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-23 22:14:45,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:45,219 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:14:45,220 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:45,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash -381568314, now seen corresponding path program 1 times [2018-10-23 22:14:45,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:45,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:45,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:45,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:45,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:45,539 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:14:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:45,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:45,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:14:45,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:45,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:14:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:14:45,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:14:45,732 INFO L87 Difference]: Start difference. First operand 6456 states and 10247 transitions. Second operand 6 states. [2018-10-23 22:14:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:55,248 INFO L93 Difference]: Finished difference Result 18070 states and 29703 transitions. [2018-10-23 22:14:55,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:14:55,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-10-23 22:14:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:55,314 INFO L225 Difference]: With dead ends: 18070 [2018-10-23 22:14:55,314 INFO L226 Difference]: Without dead ends: 11620 [2018-10-23 22:14:55,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:14:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2018-10-23 22:14:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11438. [2018-10-23 22:14:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11438 states. [2018-10-23 22:14:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11438 states to 11438 states and 17980 transitions. [2018-10-23 22:14:55,937 INFO L78 Accepts]: Start accepts. Automaton has 11438 states and 17980 transitions. Word has length 120 [2018-10-23 22:14:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:55,937 INFO L481 AbstractCegarLoop]: Abstraction has 11438 states and 17980 transitions. [2018-10-23 22:14:55,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:14:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 11438 states and 17980 transitions. [2018-10-23 22:14:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-23 22:14:55,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:55,941 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:14:55,943 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:55,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1903682250, now seen corresponding path program 1 times [2018-10-23 22:14:55,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:55,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:55,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:55,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:55,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:56,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:56,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:14:56,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:56,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:14:56,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:14:56,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:14:56,468 INFO L87 Difference]: Start difference. First operand 11438 states and 17980 transitions. Second operand 6 states. [2018-10-23 22:15:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:26,689 INFO L93 Difference]: Finished difference Result 46378 states and 82596 transitions. [2018-10-23 22:15:26,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 22:15:26,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-23 22:15:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:26,917 INFO L225 Difference]: With dead ends: 46378 [2018-10-23 22:15:26,918 INFO L226 Difference]: Without dead ends: 34946 [2018-10-23 22:15:27,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:15:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34946 states. [2018-10-23 22:15:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34946 to 34659. [2018-10-23 22:15:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34659 states. [2018-10-23 22:15:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34659 states to 34659 states and 54005 transitions. [2018-10-23 22:15:28,188 INFO L78 Accepts]: Start accepts. Automaton has 34659 states and 54005 transitions. Word has length 128 [2018-10-23 22:15:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:28,189 INFO L481 AbstractCegarLoop]: Abstraction has 34659 states and 54005 transitions. [2018-10-23 22:15:28,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:15:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 34659 states and 54005 transitions. [2018-10-23 22:15:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-23 22:15:28,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:28,192 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:15:28,192 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:28,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash 367290207, now seen corresponding path program 1 times [2018-10-23 22:15:28,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:28,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:28,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:28,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:28,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:28,443 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:15:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:15:28,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:28,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:15:28,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:28,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:15:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:15:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:15:28,816 INFO L87 Difference]: Start difference. First operand 34659 states and 54005 transitions. Second operand 6 states. [2018-10-23 22:15:38,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:38,421 INFO L93 Difference]: Finished difference Result 84446 states and 141391 transitions. [2018-10-23 22:15:38,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:15:38,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-23 22:15:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:38,719 INFO L225 Difference]: With dead ends: 84446 [2018-10-23 22:15:38,719 INFO L226 Difference]: Without dead ends: 49793 [2018-10-23 22:15:38,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:15:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49793 states. [2018-10-23 22:15:40,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49793 to 49421. [2018-10-23 22:15:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49421 states. [2018-10-23 22:15:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49421 states to 49421 states and 75385 transitions. [2018-10-23 22:15:40,314 INFO L78 Accepts]: Start accepts. Automaton has 49421 states and 75385 transitions. Word has length 149 [2018-10-23 22:15:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:40,314 INFO L481 AbstractCegarLoop]: Abstraction has 49421 states and 75385 transitions. [2018-10-23 22:15:40,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:15:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 49421 states and 75385 transitions. [2018-10-23 22:15:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-23 22:15:40,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:40,322 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:15:40,322 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:40,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:40,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1017513474, now seen corresponding path program 1 times [2018-10-23 22:15:40,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:40,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:40,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:40,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:40,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:40,633 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:15:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 22:15:40,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:15:40,880 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:15:40,881 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-10-23 22:15:40,887 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1959], [1961], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-23 22:15:41,020 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:15:41,021 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:15:47,257 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:16:12,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:16:12,178 INFO L272 AbstractInterpreter]: Visited 153 different actions 446 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-23 22:16:12,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:12,230 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:16:17,653 INFO L232 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 75.2% of their original sizes. [2018-10-23 22:16:17,653 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:16:19,509 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:16:19,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:16:19,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2018-10-23 22:16:19,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:19,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 22:16:19,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 22:16:19,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-23 22:16:19,511 INFO L87 Difference]: Start difference. First operand 49421 states and 75385 transitions. Second operand 13 states. Received shutdown request... [2018-10-23 22:17:13,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 22:17:13,802 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:17:13,808 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:17:13,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:17:13 BoogieIcfgContainer [2018-10-23 22:17:13,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:17:13,809 INFO L168 Benchmark]: Toolchain (without parser) took 205049.62 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 1.3 GB in the end (delta: 96.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-23 22:17:13,812 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. [2018-10-23 22:17:13,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2149.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:13,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 507.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:13,815 INFO L168 Benchmark]: Boogie Preprocessor took 264.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:13,816 INFO L168 Benchmark]: RCFGBuilder took 12229.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 183.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -197.5 MB). Peak memory consumption was 675.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:13,817 INFO L168 Benchmark]: TraceAbstraction took 189893.71 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-23 22:17:13,824 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 2149.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 507.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 264.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12229.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 183.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -197.5 MB). Peak memory consumption was 675.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189893.71 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (49421states) and FLOYD_HOARE automaton (currently 16 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (6310 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 189.7s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 143.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 953 SDtfs, 20447 SDslu, 1479 SDs, 0 SdLazy, 33312 SolverSat, 8445 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 100.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 237 GetRequests, 168 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49421occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 31.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9947291761492943 AbsIntWeakeningRatio, 0.1242603550295858 AbsIntAvgWeakeningVarsNumRemoved, 22.875739644970412 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 951 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 808 NumberOfCodeBlocks, 808 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 801 ConstructedInterpolants, 0 QuantifiedInterpolants, 462343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 89/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown