java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:49:48,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:49:48,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:49:48,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:49:48,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:49:48,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:49:48,903 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:49:48,906 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:49:48,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:49:48,909 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:49:48,910 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:49:48,911 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:49:48,912 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:49:48,914 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:49:48,919 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:49:48,923 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:49:48,924 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:49:48,927 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:49:48,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:49:48,932 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:49:48,934 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:49:48,936 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:49:48,943 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:49:48,955 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:49:48,976 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:49:48,976 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:49:48,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:49:48,978 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:49:48,978 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:49:48,978 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:49:48,979 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:49:48,979 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:49:48,979 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:49:48,979 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:49:48,979 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:49:48,980 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:49:48,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:49:48,981 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:49:48,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:49:48,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:49:48,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:49:48,982 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:49:48,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:49:48,984 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:49:48,984 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:49:48,984 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:49:48,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:49:48,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:49:48,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:49:48,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:49:48,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:49:48,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:49:48,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:49:48,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:49:48,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:49:48,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:49:48,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:49:48,987 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:49:49,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:49:49,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:49:49,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:49:49,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:49:49,057 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:49:49,058 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label13_false-unreach-call.c [2018-10-24 18:49:49,120 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5936c88d/c10b3440ae2c4b4ba861ccadd6642ee5/FLAG534e3668d [2018-10-24 18:49:49,927 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:49:49,928 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label13_false-unreach-call.c [2018-10-24 18:49:49,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5936c88d/c10b3440ae2c4b4ba861ccadd6642ee5/FLAG534e3668d [2018-10-24 18:49:49,984 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5936c88d/c10b3440ae2c4b4ba861ccadd6642ee5 [2018-10-24 18:49:49,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:49:50,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:49:50,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:49:50,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:49:50,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:49:50,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:49:49" (1/1) ... [2018-10-24 18:49:50,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:50, skipping insertion in model container [2018-10-24 18:49:50,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:49:49" (1/1) ... [2018-10-24 18:49:50,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:49:50,172 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:49:51,354 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:49:51,359 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:49:51,802 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:49:51,828 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:49:51,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51 WrapperNode [2018-10-24 18:49:51,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:49:51,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:49:51,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:49:51,831 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:49:51,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:51,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:49:52,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:49:52,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:49:52,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:49:52,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... [2018-10-24 18:49:52,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:49:52,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:49:52,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:49:52,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:49:52,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:49:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:49:52,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:49:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:49:52,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:49:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:49:52,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:49:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:49:52,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:49:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:49:52,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:50:07,526 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:50:07,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:50:07 BoogieIcfgContainer [2018-10-24 18:50:07,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:50:07,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:50:07,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:50:07,532 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:50:07,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:49:49" (1/3) ... [2018-10-24 18:50:07,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38692175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:50:07, skipping insertion in model container [2018-10-24 18:50:07,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:49:51" (2/3) ... [2018-10-24 18:50:07,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38692175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:50:07, skipping insertion in model container [2018-10-24 18:50:07,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:50:07" (3/3) ... [2018-10-24 18:50:07,536 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label13_false-unreach-call.c [2018-10-24 18:50:07,547 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:50:07,557 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:50:07,575 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:50:07,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:50:07,621 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:50:07,621 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:50:07,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:50:07,622 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:50:07,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:50:07,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:50:07,622 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:50:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 18:50:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 18:50:07,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:07,672 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, 1, 1, 1, 1, 1, 1] [2018-10-24 18:50:07,674 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:07,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1178650194, now seen corresponding path program 1 times [2018-10-24 18:50:07,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:07,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:07,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:07,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:08,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:08,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:50:08,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:08,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:50:08,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:50:08,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:08,236 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 18:50:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:17,428 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-24 18:50:17,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:50:17,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-24 18:50:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:17,477 INFO L225 Difference]: With dead ends: 2166 [2018-10-24 18:50:17,477 INFO L226 Difference]: Without dead ends: 1556 [2018-10-24 18:50:17,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-24 18:50:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-24 18:50:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 18:50:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-24 18:50:17,669 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 37 [2018-10-24 18:50:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:17,670 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-24 18:50:17,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:50:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-24 18:50:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 18:50:17,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:17,678 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, 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] [2018-10-24 18:50:17,678 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:17,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1514580025, now seen corresponding path program 1 times [2018-10-24 18:50:17,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:17,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:17,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:17,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:17,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:18,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:18,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:50:18,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:18,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:50:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:50:18,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:50:18,277 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-24 18:50:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:26,689 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-24 18:50:26,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:50:26,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-24 18:50:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:26,712 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 18:50:26,712 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 18:50:26,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:50:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 18:50:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-24 18:50:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-24 18:50:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-24 18:50:26,807 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 113 [2018-10-24 18:50:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:26,808 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-24 18:50:26,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:50:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-24 18:50:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 18:50:26,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:26,819 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, 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] [2018-10-24 18:50:26,819 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:26,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:26,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1724480335, now seen corresponding path program 1 times [2018-10-24 18:50:26,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:26,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:26,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:26,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:26,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:27,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:27,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:50:27,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:27,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:50:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:50:27,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:50:27,037 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-24 18:50:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:32,803 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-24 18:50:32,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:50:32,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 18:50:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:32,823 INFO L225 Difference]: With dead ends: 4880 [2018-10-24 18:50:32,824 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 18:50:32,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:50:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 18:50:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-24 18:50:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 18:50:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-24 18:50:32,921 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 117 [2018-10-24 18:50:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:32,922 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-24 18:50:32,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:50:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-24 18:50:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 18:50:32,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:32,925 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, 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] [2018-10-24 18:50:32,926 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:32,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:32,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1253038034, now seen corresponding path program 1 times [2018-10-24 18:50:32,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:32,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:32,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:32,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:32,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:50:33,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:33,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:50:33,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:33,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:50:33,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:50:33,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:33,209 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-24 18:50:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:39,778 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-24 18:50:39,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:50:39,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-24 18:50:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:39,796 INFO L225 Difference]: With dead ends: 5754 [2018-10-24 18:50:39,796 INFO L226 Difference]: Without dead ends: 2880 [2018-10-24 18:50:39,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-24 18:50:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-24 18:50:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 18:50:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-24 18:50:39,894 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 147 [2018-10-24 18:50:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:39,895 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-24 18:50:39,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:50:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-24 18:50:39,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-24 18:50:39,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:39,899 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:50:39,899 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:39,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:39,900 INFO L82 PathProgramCache]: Analyzing trace with hash 535521912, now seen corresponding path program 1 times [2018-10-24 18:50:39,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:39,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:39,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:39,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:39,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:40,231 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-24 18:50:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:50:40,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:50:40,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:50:40,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:40,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:50:40,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:50:40,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:40,268 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 4 states. [2018-10-24 18:50:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:50:47,573 INFO L93 Difference]: Finished difference Result 11062 states and 14732 transitions. [2018-10-24 18:50:47,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:50:47,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2018-10-24 18:50:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:50:47,620 INFO L225 Difference]: With dead ends: 11062 [2018-10-24 18:50:47,621 INFO L226 Difference]: Without dead ends: 8188 [2018-10-24 18:50:47,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:50:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8188 states. [2018-10-24 18:50:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8188 to 8188. [2018-10-24 18:50:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8188 states. [2018-10-24 18:50:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 10116 transitions. [2018-10-24 18:50:47,844 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 10116 transitions. Word has length 201 [2018-10-24 18:50:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:50:47,844 INFO L481 AbstractCegarLoop]: Abstraction has 8188 states and 10116 transitions. [2018-10-24 18:50:47,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:50:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 10116 transitions. [2018-10-24 18:50:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 18:50:47,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:50:47,851 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:50:47,852 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:50:47,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:47,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1601051847, now seen corresponding path program 1 times [2018-10-24 18:50:47,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:50:47,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:47,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:50:47,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:50:47,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:50:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:50:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 60 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:50:48,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:50:48,504 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:50:48,505 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-24 18:50:48,507 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [906], [908], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:50:48,585 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:50:48,586 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:50:51,507 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:50:52,032 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:50:52,034 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:50:52,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:50:52,080 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:50:54,479 INFO L232 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 75.4% of their original sizes. [2018-10-24 18:50:54,479 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:50:54,947 INFO L413 sIntCurrentIteration]: We have 223 unified AI predicates [2018-10-24 18:50:54,947 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:50:54,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:50:54,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 18:50:54,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:50:54,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:50:54,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:50:54,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:50:54,950 INFO L87 Difference]: Start difference. First operand 8188 states and 10116 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 18:53:43,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:53:43,019 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:53:43,024 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:53:43,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:53:43 BoogieIcfgContainer [2018-10-24 18:53:43,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:53:43,025 INFO L168 Benchmark]: Toolchain (without parser) took 233026.68 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 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 982.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:43,027 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:53:43,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1827.82 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:43,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 518.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -914.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:43,029 INFO L168 Benchmark]: Boogie Preprocessor took 357.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:43,030 INFO L168 Benchmark]: RCFGBuilder took 14820.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 465.6 MB). Peak memory consumption was 465.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:43,031 INFO L168 Benchmark]: TraceAbstraction took 215496.13 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 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 508.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:53:43,037 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1827.82 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 518.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -914.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14820.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 465.6 MB). Peak memory consumption was 465.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215496.13 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 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 508.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 98). Cancelled while BasicCegarLoop was constructing difference of abstraction (8188states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (13703 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 215.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 205.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2595 SDtfs, 7918 SDslu, 1661 SDs, 0 SdLazy, 14470 SolverSat, 3167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8188occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9956536736805794 AbsIntWeakeningRatio, 0.1210762331838565 AbsIntAvgWeakeningVarsNumRemoved, 1045.2286995515694 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 541 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 839 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 833 ConstructedInterpolants, 0 QuantifiedInterpolants, 669598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 291/363 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown