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/Problem18_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:55:34,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:55:34,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:55:34,678 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:55:34,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:55:34,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:55:34,680 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:55:34,682 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:55:34,684 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:55:34,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:55:34,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:55:34,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:55:34,687 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:55:34,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:55:34,689 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:55:34,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:55:34,690 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:55:34,692 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:55:34,694 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:55:34,695 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:55:34,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:55:34,698 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:55:34,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:55:34,708 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 22:55:34,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:55:34,730 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:55:34,731 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:55:34,731 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:55:34,732 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:55:34,732 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:55:34,732 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:55:34,732 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:55:34,733 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:55:34,733 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:55:34,733 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:55:34,733 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:55:34,734 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:55:34,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:55:34,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:55:34,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:55:34,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:55:34,735 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:55:34,736 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:55:34,736 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:55:34,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:55:34,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:55:34,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:55:34,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:55:34,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:55:34,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:55:34,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:55:34,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:55:34,738 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:55:34,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:55:34,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:55:34,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:55:34,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:55:34,740 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:55:34,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:55:34,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:55:34,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:55:34,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:55:34,824 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:55:34,825 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label25_false-unreach-call.c [2018-10-23 22:55:34,893 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c57a1979/0a11d8e9f2424473a4e29c948f403a17/FLAG96c9cb8f3 [2018-10-23 22:55:35,676 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:55:35,677 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label25_false-unreach-call.c [2018-10-23 22:55:35,708 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c57a1979/0a11d8e9f2424473a4e29c948f403a17/FLAG96c9cb8f3 [2018-10-23 22:55:35,728 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c57a1979/0a11d8e9f2424473a4e29c948f403a17 [2018-10-23 22:55:35,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:55:35,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:55:35,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:55:35,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:55:35,756 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:55:35,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:55:35" (1/1) ... [2018-10-23 22:55:35,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ef285f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:35, skipping insertion in model container [2018-10-23 22:55:35,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:55:35" (1/1) ... [2018-10-23 22:55:35,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:55:35,920 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:55:37,145 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:55:37,150 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:55:37,576 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:55:37,615 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:55:37,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37 WrapperNode [2018-10-23 22:55:37,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:55:37,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:55:37,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:55:37,618 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:55:37,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:37,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:55:38,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:55:38,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:55:38,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:55:38,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (1/1) ... [2018-10-23 22:55:38,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:55:38,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:55:38,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:55:38,391 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:55:38,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (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 22:55:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:55:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:55:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:55:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:55:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:55:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:55:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:55:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:55:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:55:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:55:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:55:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:55:46,311 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:55:46,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:55:46 BoogieIcfgContainer [2018-10-23 22:55:46,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:55:46,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:55:46,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:55:46,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:55:46,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:55:35" (1/3) ... [2018-10-23 22:55:46,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b719a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:55:46, skipping insertion in model container [2018-10-23 22:55:46,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:55:37" (2/3) ... [2018-10-23 22:55:46,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b719a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:55:46, skipping insertion in model container [2018-10-23 22:55:46,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:55:46" (3/3) ... [2018-10-23 22:55:46,327 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label25_false-unreach-call.c [2018-10-23 22:55:46,338 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:55:46,358 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:55:46,377 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:55:46,449 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:55:46,449 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:55:46,450 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:55:46,450 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:55:46,450 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:55:46,450 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:55:46,450 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:55:46,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:55:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-23 22:55:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-23 22:55:46,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:55:46,511 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:55:46,514 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:55:46,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:55:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1649769497, now seen corresponding path program 1 times [2018-10-23 22:55:46,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:55:46,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:55:46,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:55:46,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:55:46,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:55:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:55:46,916 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 22:55:46,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:55:46,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:55:46,920 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:55:46,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:55:46,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:55:46,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:55:46,943 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-23 22:55:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:55:57,926 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-23 22:55:57,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:55:57,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-23 22:55:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:55:57,969 INFO L225 Difference]: With dead ends: 2974 [2018-10-23 22:55:57,969 INFO L226 Difference]: Without dead ends: 2193 [2018-10-23 22:55:57,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:55:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-23 22:55:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-23 22:55:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-23 22:55:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-23 22:55:58,176 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 31 [2018-10-23 22:55:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:55:58,177 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-23 22:55:58,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:55:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-23 22:55:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 22:55:58,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:55:58,183 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:55:58,184 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:55:58,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:55:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1025384456, now seen corresponding path program 1 times [2018-10-23 22:55:58,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:55:58,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:55:58,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:55:58,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:55:58,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:55:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:55:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:55:58,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:55:58,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:55:58,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:55:58,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:55:58,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:55:58,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:55:58,740 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-23 22:56:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:56:09,033 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-23 22:56:09,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:56:09,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-10-23 22:56:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:56:09,061 INFO L225 Difference]: With dead ends: 4422 [2018-10-23 22:56:09,062 INFO L226 Difference]: Without dead ends: 2954 [2018-10-23 22:56:09,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:56:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-23 22:56:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-23 22:56:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-23 22:56:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-23 22:56:09,165 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 101 [2018-10-23 22:56:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:56:09,166 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-23 22:56:09,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:56:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-23 22:56:09,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 22:56:09,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:56:09,169 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:56:09,170 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:56:09,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:56:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash 575354176, now seen corresponding path program 1 times [2018-10-23 22:56:09,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:56:09,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:09,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:56:09,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:09,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:56:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:56:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:56:09,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:56:09,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:56:09,362 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:56:09,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:56:09,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:56:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:56:09,364 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-23 22:56:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:56:17,523 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-10-23 22:56:17,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:56:17,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-10-23 22:56:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:56:17,582 INFO L225 Difference]: With dead ends: 10279 [2018-10-23 22:56:17,582 INFO L226 Difference]: Without dead ends: 7355 [2018-10-23 22:56:17,605 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 22:56:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-10-23 22:56:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-10-23 22:56:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-10-23 22:56:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-10-23 22:56:17,877 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 105 [2018-10-23 22:56:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:56:17,878 INFO L481 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-10-23 22:56:17,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:56:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-10-23 22:56:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-23 22:56:17,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:56:17,882 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:17,882 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:56:17,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:56:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1276627405, now seen corresponding path program 1 times [2018-10-23 22:56:17,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:56:17,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:17,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:56:17,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:17,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:56:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:56:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:56:18,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:56:18,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:56:18,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:56:18,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:56:18,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:56:18,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:56:18,185 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-10-23 22:56:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:56:26,155 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-10-23 22:56:26,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:56:26,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-23 22:56:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:56:26,223 INFO L225 Difference]: With dead ends: 18993 [2018-10-23 22:56:26,223 INFO L226 Difference]: Without dead ends: 11703 [2018-10-23 22:56:26,262 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 22:56:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-10-23 22:56:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-10-23 22:56:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-10-23 22:56:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-10-23 22:56:26,596 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 126 [2018-10-23 22:56:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:56:26,597 INFO L481 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-10-23 22:56:26,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:56:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-10-23 22:56:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-23 22:56:26,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:56:26,606 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-23 22:56:26,606 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:56:26,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:56:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1484086754, now seen corresponding path program 1 times [2018-10-23 22:56:26,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:56:26,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:26,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:56:26,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:56:26,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:56:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:56:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:56:27,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:56:27,306 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:56:27,307 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-23 22:56:27,310 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1771], [1773], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:56:27,397 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:56:27,397 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:56:29,976 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:56:29,977 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:56:29,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:56:29,989 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:56:31,927 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 77.63% of their original sizes. [2018-10-23 22:56:31,928 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:56:32,277 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:56:32,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:56:32,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-23 22:56:32,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:56:32,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:56:32,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:56:32,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:56:32,280 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 7 states. [2018-10-23 22:56:35,314 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:58:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:58:09,588 INFO L93 Difference]: Finished difference Result 23977 states and 32836 transitions. [2018-10-23 22:58:09,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:58:09,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-10-23 22:58:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:58:09,625 INFO L225 Difference]: With dead ends: 23977 [2018-10-23 22:58:09,625 INFO L226 Difference]: Without dead ends: 12344 [2018-10-23 22:58:09,650 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:58:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2018-10-23 22:58:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 12342. [2018-10-23 22:58:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12342 states. [2018-10-23 22:58:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 16714 transitions. [2018-10-23 22:58:09,898 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 16714 transitions. Word has length 228 [2018-10-23 22:58:09,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:58:09,898 INFO L481 AbstractCegarLoop]: Abstraction has 12342 states and 16714 transitions. [2018-10-23 22:58:09,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:58:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 16714 transitions. [2018-10-23 22:58:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-10-23 22:58:09,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:58:09,910 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:09,911 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:58:09,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1811671040, now seen corresponding path program 1 times [2018-10-23 22:58:09,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:58:09,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:09,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:58:09,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:09,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:58:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:58:10,453 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:58:10,659 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:58:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 131 proven. 223 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:58:11,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:58:11,174 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:58:11,175 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-10-23 22:58:11,175 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1771], [1773], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:58:11,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:58:11,187 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:58:22,580 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:58:22,581 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:58:22,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:22,590 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:58:28,566 INFO L232 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-23 22:58:28,567 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:59:06,252 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:59:06,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:59:06,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-23 22:59:06,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:59:06,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 22:59:06,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 22:59:06,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-23 22:59:06,256 INFO L87 Difference]: Start difference. First operand 12342 states and 16714 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 22:59:16,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:59:16,374 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:59:16,380 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:59:16,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:59:16 BoogieIcfgContainer [2018-10-23 22:59:16,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:59:16,381 INFO L168 Benchmark]: Toolchain (without parser) took 220637.01 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 22:59:16,382 INFO L168 Benchmark]: CDTParser took 0.22 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 22:59:16,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1867.47 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:59:16,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 515.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.8 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:59:16,385 INFO L168 Benchmark]: Boogie Preprocessor took 256.82 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:59:16,386 INFO L168 Benchmark]: RCFGBuilder took 7925.58 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: 505.3 MB). Peak memory consumption was 505.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:59:16,386 INFO L168 Benchmark]: TraceAbstraction took 210062.87 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 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 606.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:59:16,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1867.47 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 515.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.8 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 256.82 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7925.58 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: 505.3 MB). Peak memory consumption was 505.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210062.87 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 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 606.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (12342states) and FLOYD_HOARE automaton (currently 9 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (41 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 209.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 145.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1680 SDtfs, 11554 SDslu, 922 SDs, 0 SdLazy, 23232 SolverSat, 5474 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 681 GetRequests, 581 SyntacticMatches, 55 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 38.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12342occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961874561938999 AbsIntWeakeningRatio, 0.0904836193447738 AbsIntAvgWeakeningVarsNumRemoved, 331.6708268330733 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 868 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1006 NumberOfCodeBlocks, 1006 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1000 ConstructedInterpolants, 0 QuantifiedInterpolants, 1747452 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 344/569 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown