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/Problem14_label37_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:28:37,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:28:37,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:28:37,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:28:37,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:28:37,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:28:37,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:28:37,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:28:37,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:28:37,634 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:28:37,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:28:37,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:28:37,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:28:37,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:28:37,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:28:37,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:28:37,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:28:37,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:28:37,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:28:37,645 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:28:37,647 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:28:37,648 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:28:37,651 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:28:37,660 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:28:37,676 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:28:37,677 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:28:37,678 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:28:37,678 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:28:37,678 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:28:37,678 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:28:37,678 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:28:37,679 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:28:37,679 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:28:37,679 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:28:37,679 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:28:37,680 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:28:37,680 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:28:37,681 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:28:37,681 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:28:37,681 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:28:37,681 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:28:37,681 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:28:37,681 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:28:37,682 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:28:37,682 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:28:37,682 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:28:37,682 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:28:37,682 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:28:37,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:28:37,683 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:28:37,683 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:28:37,683 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:28:37,683 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:28:37,684 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:28:37,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:28:37,684 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:28:37,684 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:28:37,684 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:28:37,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:28:37,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:28:37,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:28:37,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:28:37,756 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:28:37,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c [2018-10-23 22:28:37,832 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/99dc21dfc/35eaec9e3f2343b7af054c562b930b82/FLAG73c5f578c [2018-10-23 22:28:38,488 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:28:38,495 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c [2018-10-23 22:28:38,520 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/99dc21dfc/35eaec9e3f2343b7af054c562b930b82/FLAG73c5f578c [2018-10-23 22:28:38,539 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/99dc21dfc/35eaec9e3f2343b7af054c562b930b82 [2018-10-23 22:28:38,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:28:38,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:28:38,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:28:38,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:28:38,562 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:28:38,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:28:38" (1/1) ... [2018-10-23 22:28:38,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5722cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:38, skipping insertion in model container [2018-10-23 22:28:38,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:28:38" (1/1) ... [2018-10-23 22:28:38,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:28:38,646 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:28:39,146 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:28:39,151 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:28:39,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:28:39,303 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:28:39,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39 WrapperNode [2018-10-23 22:28:39,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:28:39,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:28:39,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:28:39,305 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:28:39,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:28:39,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:28:39,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:28:39,524 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:28:39,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (1/1) ... [2018-10-23 22:28:39,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:28:39,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:28:39,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:28:39,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:28:39,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (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 [2018-10-23 22:28:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:28:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:28:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:28:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:28:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:28:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:28:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:28:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:28:43,445 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:28:43,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:28:43 BoogieIcfgContainer [2018-10-23 22:28:43,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:28:43,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:28:43,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:28:43,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:28:43,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:28:38" (1/3) ... [2018-10-23 22:28:43,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe17036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:28:43, skipping insertion in model container [2018-10-23 22:28:43,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:39" (2/3) ... [2018-10-23 22:28:43,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe17036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:28:43, skipping insertion in model container [2018-10-23 22:28:43,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:28:43" (3/3) ... [2018-10-23 22:28:43,457 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label37_false-unreach-call_false-termination.c [2018-10-23 22:28:43,465 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:28:43,474 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:28:43,492 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:28:43,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:28:43,532 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:28:43,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:28:43,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:28:43,532 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:28:43,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:28:43,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:28:43,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:28:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:28:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 22:28:43,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:43,570 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] [2018-10-23 22:28:43,572 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:43,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash -693884199, now seen corresponding path program 1 times [2018-10-23 22:28:43,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:43,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:43,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:43,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:43,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:43,948 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:28:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:44,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:44,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:28:44,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:44,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:28:44,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:28:44,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:28:44,076 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:28:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:46,425 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:28:46,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:28:46,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-10-23 22:28:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:46,461 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:28:46,461 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:28:46,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:28:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:28:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:28:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:28:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:28:46,555 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 25 [2018-10-23 22:28:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:46,556 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:28:46,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:28:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:28:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-23 22:28:46,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:46,562 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:28:46,563 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:46,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:46,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1401111305, now seen corresponding path program 1 times [2018-10-23 22:28:46,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:46,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:46,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:46,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:46,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:46,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:46,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:28:46,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:46,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:28:46,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:28:46,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:28:46,855 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:28:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:49,105 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-23 22:28:49,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:28:49,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-23 22:28:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:49,114 INFO L225 Difference]: With dead ends: 1062 [2018-10-23 22:28:49,114 INFO L226 Difference]: Without dead ends: 634 [2018-10-23 22:28:49,117 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 [2018-10-23 22:28:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-23 22:28:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-23 22:28:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-23 22:28:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-23 22:28:49,170 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 100 [2018-10-23 22:28:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:49,171 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-23 22:28:49,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:28:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-23 22:28:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-23 22:28:49,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:49,175 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:28:49,175 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:49,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1715582128, now seen corresponding path program 1 times [2018-10-23 22:28:49,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:49,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:49,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:49,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:49,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:49,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:49,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:28:49,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:49,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:28:49,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:28:49,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:28:49,407 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-23 22:28:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:53,968 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-10-23 22:28:53,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:28:53,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-10-23 22:28:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:53,993 INFO L225 Difference]: With dead ends: 2350 [2018-10-23 22:28:53,993 INFO L226 Difference]: Without dead ends: 1731 [2018-10-23 22:28:54,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:28:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-23 22:28:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-23 22:28:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-23 22:28:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-10-23 22:28:54,091 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 109 [2018-10-23 22:28:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:54,092 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-10-23 22:28:54,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:28:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-10-23 22:28:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-23 22:28:54,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:54,113 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:28:54,113 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:54,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:54,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1253393881, now seen corresponding path program 1 times [2018-10-23 22:28:54,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:54,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:54,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:54,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:54,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-23 22:28:54,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:54,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:28:54,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:54,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:28:54,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:28:54,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:28:54,539 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 4 states. [2018-10-23 22:28:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:57,669 INFO L93 Difference]: Finished difference Result 6215 states and 9785 transitions. [2018-10-23 22:28:57,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:28:57,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-10-23 22:28:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:57,713 INFO L225 Difference]: With dead ends: 6215 [2018-10-23 22:28:57,714 INFO L226 Difference]: Without dead ends: 4490 [2018-10-23 22:28:57,745 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 [2018-10-23 22:28:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2018-10-23 22:28:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4490. [2018-10-23 22:28:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4490 states. [2018-10-23 22:28:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6614 transitions. [2018-10-23 22:28:57,902 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6614 transitions. Word has length 219 [2018-10-23 22:28:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:57,903 INFO L481 AbstractCegarLoop]: Abstraction has 4490 states and 6614 transitions. [2018-10-23 22:28:57,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:28:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6614 transitions. [2018-10-23 22:28:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-23 22:28:57,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:57,926 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:28:57,926 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:57,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:57,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1012778421, now seen corresponding path program 1 times [2018-10-23 22:28:57,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:57,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:57,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:57,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:57,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:58,489 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-23 22:28:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 36 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:28:58,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:28:58,877 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:28:58,878 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-23 22:28:58,880 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [101], [103], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:28:58,963 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:28:58,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:02,036 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:04,676 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:04,678 INFO L272 AbstractInterpreter]: Visited 148 different actions 148 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:29:04,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:04,719 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:08,140 INFO L232 lantSequenceWeakener]: Weakened 273 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-23 22:29:08,141 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:08,581 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:29:08,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:29:08,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-23 22:29:08,582 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:08,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:29:08,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:29:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:29:08,584 INFO L87 Difference]: Start difference. First operand 4490 states and 6614 transitions. Second operand 7 states. [2018-10-23 22:29:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:36,947 INFO L93 Difference]: Finished difference Result 9159 states and 13470 transitions. [2018-10-23 22:29:36,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:29:36,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2018-10-23 22:29:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:36,986 INFO L225 Difference]: With dead ends: 9159 [2018-10-23 22:29:36,987 INFO L226 Difference]: Without dead ends: 4675 [2018-10-23 22:29:37,022 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:29:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-23 22:29:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4673. [2018-10-23 22:29:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2018-10-23 22:29:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6805 transitions. [2018-10-23 22:29:37,195 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6805 transitions. Word has length 281 [2018-10-23 22:29:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:37,195 INFO L481 AbstractCegarLoop]: Abstraction has 4673 states and 6805 transitions. [2018-10-23 22:29:37,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:29:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6805 transitions. [2018-10-23 22:29:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-23 22:29:37,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:37,222 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:29:37,223 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:37,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1149584761, now seen corresponding path program 1 times [2018-10-23 22:29:37,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:37,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:37,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:37,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:37,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:37,786 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 142 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:29:38,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:38,415 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:38,415 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-23 22:29:38,415 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [101], [103], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:38,423 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:38,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:40,958 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:45,925 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:45,925 INFO L272 AbstractInterpreter]: Visited 152 different actions 297 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:29:45,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:45,933 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:49,446 INFO L232 lantSequenceWeakener]: Weakened 146 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-23 22:29:49,446 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:30:38,414 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:30:38,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:30:38,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-23 22:30:38,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:38,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-23 22:30:38,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-23 22:30:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-10-23 22:30:38,416 INFO L87 Difference]: Start difference. First operand 4673 states and 6805 transitions. Second operand 19 states. Received shutdown request... [2018-10-23 22:32:36,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 22:32:36,044 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:32:36,050 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:32:36,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:32:36 BoogieIcfgContainer [2018-10-23 22:32:36,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:32:36,051 INFO L168 Benchmark]: Toolchain (without parser) took 237497.98 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,053 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:32:36,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 218.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,055 INFO L168 Benchmark]: Boogie Preprocessor took 109.75 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,056 INFO L168 Benchmark]: RCFGBuilder took 3812.42 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: 130.8 MB). Peak memory consumption was 130.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,057 INFO L168 Benchmark]: TraceAbstraction took 232601.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -452.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 22:32:36,063 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 218.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.75 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3812.42 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: 130.8 MB). Peak memory consumption was 130.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232601.07 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -452.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (4673states) and FLOYD_HOARE automaton (currently 23 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (3075 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 158.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 901 SDtfs, 4493 SDslu, 816 SDs, 0 SdLazy, 6442 SolverSat, 1367 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 678 GetRequests, 573 SyntacticMatches, 63 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 51.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4673occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9962110998764182 AbsIntWeakeningRatio, 0.08992248062015504 AbsIntAvgWeakeningVarsNumRemoved, 657.0496124031008 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1100 NumberOfCodeBlocks, 1100 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1094 ConstructedInterpolants, 0 QuantifiedInterpolants, 2433307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 341/639 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown