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_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:17:36,502 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:17:36,504 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:17:36,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:17:36,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:17:36,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:17:36,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:17:36,526 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:17:36,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:17:36,537 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:17:36,538 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:17:36,538 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:17:36,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:17:36,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:17:36,544 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:17:36,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:17:36,550 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:17:36,552 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:17:36,554 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:17:36,555 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:17:36,556 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:17:36,557 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:17:36,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:17:36,573 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:17:36,573 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:17:36,576 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:17:36,576 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:17:36,577 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 22:17:36,606 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:17:36,607 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:17:36,608 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:17:36,608 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:17:36,608 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:17:36,609 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:17:36,609 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:17:36,609 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:17:36,609 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:17:36,609 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:17:36,610 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:17:36,610 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:17:36,611 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:17:36,611 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:17:36,611 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:17:36,611 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:17:36,611 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:17:36,611 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:17:36,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:17:36,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:17:36,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:17:36,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:17:36,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:17:36,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:17:36,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:17:36,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:17:36,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:17:36,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:17:36,615 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:17:36,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:17:36,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:17:36,615 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:17:36,615 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:17:36,616 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:17:36,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:17:36,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:17:36,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:17:36,688 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:17:36,688 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:17:36,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label17_true-unreach-call.c [2018-10-24 22:17:36,761 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b66d9beb/05a01c80ea964298abc72293a1e493ab/FLAG2bf887378 [2018-10-24 22:17:37,608 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:17:37,609 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label17_true-unreach-call.c [2018-10-24 22:17:37,638 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b66d9beb/05a01c80ea964298abc72293a1e493ab/FLAG2bf887378 [2018-10-24 22:17:37,657 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b66d9beb/05a01c80ea964298abc72293a1e493ab [2018-10-24 22:17:37,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:17:37,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:17:37,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:17:37,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:17:37,682 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:17:37,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:37" (1/1) ... [2018-10-24 22:17:37,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:37, skipping insertion in model container [2018-10-24 22:17:37,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:37" (1/1) ... [2018-10-24 22:17:37,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:17:37,861 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:17:39,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:17:39,034 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:17:39,500 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:17:39,532 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:17:39,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39 WrapperNode [2018-10-24 22:17:39,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:17:39,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:17:39,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:17:39,534 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:17:39,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:39,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:39,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:17:39,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:17:39,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:17:39,962 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:17:39,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:39,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:39,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:39,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:40,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:40,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:40,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (1/1) ... [2018-10-24 22:17:40,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:17:40,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:17:40,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:17:40,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:17:40,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (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 22:17:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:17:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:17:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:17:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:17:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:17:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:17:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:17:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:17:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:17:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:17:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:17:40,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:17:48,489 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:17:48,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:48 BoogieIcfgContainer [2018-10-24 22:17:48,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:17:48,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:17:48,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:17:48,495 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:17:48,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:17:37" (1/3) ... [2018-10-24 22:17:48,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:48, skipping insertion in model container [2018-10-24 22:17:48,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:39" (2/3) ... [2018-10-24 22:17:48,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:48, skipping insertion in model container [2018-10-24 22:17:48,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:48" (3/3) ... [2018-10-24 22:17:48,499 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label17_true-unreach-call.c [2018-10-24 22:17:48,510 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:17:48,520 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:17:48,538 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:17:48,589 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:17:48,590 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:17:48,590 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:17:48,590 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:17:48,590 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:17:48,590 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:17:48,591 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:17:48,591 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:17:48,646 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:17:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 22:17:48,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:17:48,659 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, 1] [2018-10-24 22:17:48,662 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:17:48,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:17:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1618771172, now seen corresponding path program 1 times [2018-10-24 22:17:48,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:17:48,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:48,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:17:48,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:17:48,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:17:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:17:49,110 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 22:17:49,129 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 22:17:49,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:17:49,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:17:49,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:17:49,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:17:49,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:17:49,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:17:49,167 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 22:18:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:18:01,537 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 22:18:01,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:18:01,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-24 22:18:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:18:01,589 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 22:18:01,589 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 22:18:01,603 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 22:18:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 22:18:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-24 22:18:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-24 22:18:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-10-24 22:18:01,784 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 38 [2018-10-24 22:18:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:18:01,785 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-10-24 22:18:01,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:18:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-10-24 22:18:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 22:18:01,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:18:01,799 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, 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] [2018-10-24 22:18:01,800 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:18:01,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:01,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1723944686, now seen corresponding path program 1 times [2018-10-24 22:18:01,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:18:01,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:01,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:18:01,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:01,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:18:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:18:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:18:02,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:18:02,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:18:02,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:18:02,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:18:02,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:18:02,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:18:02,141 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-10-24 22:18:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:18:11,165 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-10-24 22:18:11,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:18:11,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-10-24 22:18:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:18:11,208 INFO L225 Difference]: With dead ends: 6600 [2018-10-24 22:18:11,208 INFO L226 Difference]: Without dead ends: 4413 [2018-10-24 22:18:11,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:18:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-24 22:18:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-24 22:18:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-24 22:18:11,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-10-24 22:18:11,386 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 108 [2018-10-24 22:18:11,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:18:11,387 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-10-24 22:18:11,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:18:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-10-24 22:18:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 22:18:11,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:18:11,401 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, 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] [2018-10-24 22:18:11,402 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:18:11,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash 455681307, now seen corresponding path program 1 times [2018-10-24 22:18:11,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:18:11,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:11,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:18:11,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:11,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:18:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:18:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:18:11,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:18:11,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:18:11,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:18:11,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:18:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:18:11,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:18:11,675 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-10-24 22:18:12,655 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-24 22:18:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:18:17,672 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-10-24 22:18:17,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:18:17,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-24 22:18:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:18:17,716 INFO L225 Difference]: With dead ends: 11002 [2018-10-24 22:18:17,716 INFO L226 Difference]: Without dead ends: 6630 [2018-10-24 22:18:17,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:18:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-24 22:18:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-24 22:18:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-24 22:18:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-10-24 22:18:17,906 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 135 [2018-10-24 22:18:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:18:17,906 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-10-24 22:18:17,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:18:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-10-24 22:18:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-24 22:18:17,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:18:17,911 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:18:17,912 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:18:17,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1233353173, now seen corresponding path program 1 times [2018-10-24 22:18:17,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:18:17,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:17,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:18:17,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:17,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:18:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:18:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 22:18:18,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:18:18,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:18:18,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:18:18,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:18:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:18:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:18:18,171 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-10-24 22:18:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:18:28,491 INFO L93 Difference]: Finished difference Result 26041 states and 36985 transitions. [2018-10-24 22:18:28,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:18:28,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-10-24 22:18:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:18:28,578 INFO L225 Difference]: With dead ends: 26041 [2018-10-24 22:18:28,578 INFO L226 Difference]: Without dead ends: 19457 [2018-10-24 22:18:28,617 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 22:18:28,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19457 states. [2018-10-24 22:18:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19457 to 19457. [2018-10-24 22:18:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19457 states. [2018-10-24 22:18:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19457 states to 19457 states and 26052 transitions. [2018-10-24 22:18:29,090 INFO L78 Accepts]: Start accepts. Automaton has 19457 states and 26052 transitions. Word has length 215 [2018-10-24 22:18:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:18:29,091 INFO L481 AbstractCegarLoop]: Abstraction has 19457 states and 26052 transitions. [2018-10-24 22:18:29,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:18:29,091 INFO L276 IsEmpty]: Start isEmpty. Operand 19457 states and 26052 transitions. [2018-10-24 22:18:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-24 22:18:29,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:18:29,101 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, 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, 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] [2018-10-24 22:18:29,102 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:18:29,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:29,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1408112993, now seen corresponding path program 1 times [2018-10-24 22:18:29,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:18:29,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:29,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:18:29,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:18:29,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:18:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:18:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:18:29,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:18:29,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:18:29,684 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-10-24 22:18:29,687 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1827], [1829], [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], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:18:29,799 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:18:29,799 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:18:32,615 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:18:32,713 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:18:32,714 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:18:32,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:18:32,738 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:18:34,945 INFO L232 lantSequenceWeakener]: Weakened 249 states. On average, predicates are now at 77.72% of their original sizes. [2018-10-24 22:18:34,945 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:18:35,262 INFO L413 sIntCurrentIteration]: We have 256 unified AI predicates [2018-10-24 22:18:35,262 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:18:35,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:18:35,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:18:35,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:18:35,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:18:35,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:18:35,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:18:35,266 INFO L87 Difference]: Start difference. First operand 19457 states and 26052 transitions. Second operand 7 states. [2018-10-24 22:20:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:23,442 INFO L93 Difference]: Finished difference Result 39613 states and 52878 transitions. [2018-10-24 22:20:23,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:23,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2018-10-24 22:20:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:23,511 INFO L225 Difference]: With dead ends: 39613 [2018-10-24 22:20:23,511 INFO L226 Difference]: Without dead ends: 20162 [2018-10-24 22:20:23,559 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:20:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20162 states. [2018-10-24 22:20:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20162 to 20160. [2018-10-24 22:20:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20160 states. [2018-10-24 22:20:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20160 states to 20160 states and 26767 transitions. [2018-10-24 22:20:24,028 INFO L78 Accepts]: Start accepts. Automaton has 20160 states and 26767 transitions. Word has length 257 [2018-10-24 22:20:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:24,028 INFO L481 AbstractCegarLoop]: Abstraction has 20160 states and 26767 transitions. [2018-10-24 22:20:24,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:20:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 20160 states and 26767 transitions. [2018-10-24 22:20:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-10-24 22:20:24,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:24,043 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:20:24,044 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:24,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1937675806, now seen corresponding path program 1 times [2018-10-24 22:20:24,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:24,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:24,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:24,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:24,046 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:24,677 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:20:24,869 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:20:25,100 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:20:25,534 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 22:20:26,182 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 22:20:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 152 proven. 262 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:20:26,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:20:26,596 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:20:26,596 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 445 with the following transitions: [2018-10-24 22:20:26,597 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1827], [1829], [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], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2284], [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] [2018-10-24 22:20:26,611 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:20:26,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:20:28,456 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:20:38,481 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:20:38,482 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. [2018-10-24 22:20:38,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:38,502 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:20:42,808 INFO L232 lantSequenceWeakener]: Weakened 142 states. On average, predicates are now at 78.34% of their original sizes. [2018-10-24 22:20:42,808 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:21:23,167 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:21:23,173 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:21:23,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:21:23 BoogieIcfgContainer [2018-10-24 22:21:23,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:21:23,174 INFO L168 Benchmark]: Toolchain (without parser) took 225502.35 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -375.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:21:23,175 INFO L168 Benchmark]: CDTParser took 0.20 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 22:21:23,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1857.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:21:23,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 427.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -935.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:21:23,178 INFO L168 Benchmark]: Boogie Preprocessor took 203.89 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:21:23,179 INFO L168 Benchmark]: RCFGBuilder took 8324.55 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: 502.7 MB). Peak memory consumption was 502.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:21:23,180 INFO L168 Benchmark]: TraceAbstraction took 214681.67 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -104.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:21:23,185 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1857.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 427.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -935.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.89 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8324.55 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: 502.7 MB). Peak memory consumption was 502.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214681.67 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -104.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was analyzing trace of length 445 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 214.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 146.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1706 SDtfs, 9252 SDslu, 845 SDs, 0 SdLazy, 19246 SolverSat, 5164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 287 GetRequests, 262 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20160occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9965038046069954 AbsIntWeakeningRatio, 0.08297567954220315 AbsIntAvgWeakeningVarsNumRemoved, 467.85693848354794 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 753 NumberOfCodeBlocks, 753 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 748 ConstructedInterpolants, 0 QuantifiedInterpolants, 416148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 361/363 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown