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_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:38:39,705 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:38:39,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:38:39,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:38:39,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:38:39,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:38:39,724 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:38:39,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:38:39,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:38:39,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:38:39,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:38:39,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:38:39,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:38:39,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:38:39,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:38:39,733 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:38:39,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:38:39,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:38:39,738 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:38:39,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:38:39,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:38:39,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:38:39,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:38:39,752 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 01:38:39,769 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:38:39,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:38:39,770 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:38:39,770 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:38:39,770 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:38:39,770 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:38:39,771 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:38:39,771 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:38:39,771 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:38:39,771 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:38:39,771 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:38:39,772 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:38:39,772 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:38:39,773 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:38:39,773 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:38:39,773 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:38:39,773 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:38:39,773 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:38:39,773 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:38:39,774 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:38:39,774 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:38:39,774 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:38:39,774 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:38:39,774 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:38:39,775 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:38:39,775 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:38:39,775 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:38:39,775 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:38:39,775 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:38:39,776 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:38:39,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:38:39,776 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:38:39,776 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:38:39,776 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:38:39,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:38:39,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:38:39,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:38:39,867 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:38:39,867 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:38:39,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 01:38:39,928 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/997ba28fc/e833f6ebb45441edadf3bd66b2031a7c/FLAG2db7f0201 [2018-10-24 01:38:40,561 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:38:40,562 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 01:38:40,583 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/997ba28fc/e833f6ebb45441edadf3bd66b2031a7c/FLAG2db7f0201 [2018-10-24 01:38:40,604 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/997ba28fc/e833f6ebb45441edadf3bd66b2031a7c [2018-10-24 01:38:40,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:38:40,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:38:40,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:38:40,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:38:40,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:38:40,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:38:40" (1/1) ... [2018-10-24 01:38:40,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0ce8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:40, skipping insertion in model container [2018-10-24 01:38:40,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:38:40" (1/1) ... [2018-10-24 01:38:40,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:38:40,722 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:38:41,178 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:38:41,184 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:38:41,348 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:38:41,366 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:38:41,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41 WrapperNode [2018-10-24 01:38:41,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:38:41,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:38:41,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:38:41,368 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:38:41,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:38:41,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:38:41,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:38:41,585 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:38:41,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (1/1) ... [2018-10-24 01:38:41,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:38:41,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:38:41,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:38:41,669 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:38:41,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (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 01:38:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:38:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:38:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:38:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:38:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:38:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:38:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:38:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:38:45,550 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:38:45,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:38:45 BoogieIcfgContainer [2018-10-24 01:38:45,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:38:45,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:38:45,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:38:45,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:38:45,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:38:40" (1/3) ... [2018-10-24 01:38:45,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0eeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:38:45, skipping insertion in model container [2018-10-24 01:38:45,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:38:41" (2/3) ... [2018-10-24 01:38:45,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0eeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:38:45, skipping insertion in model container [2018-10-24 01:38:45,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:38:45" (3/3) ... [2018-10-24 01:38:45,562 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 01:38:45,573 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:38:45,586 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:38:45,605 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:38:45,656 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:38:45,656 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:38:45,657 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:38:45,657 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:38:45,657 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:38:45,657 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:38:45,657 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:38:45,658 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:38:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:38:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 01:38:45,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:38:45,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:38:45,697 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:38:45,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:38:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1477043892, now seen corresponding path program 1 times [2018-10-24 01:38:45,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:38:45,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:45,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:38:45,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:45,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:38:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:38:46,229 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:38:46,387 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 01:38:46,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:38:46,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:38:46,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:38:46,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:38:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:38:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:38:46,412 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 01:38:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:38:48,705 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 01:38:48,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:38:48,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-10-24 01:38:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:38:48,730 INFO L225 Difference]: With dead ends: 691 [2018-10-24 01:38:48,730 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 01:38:48,739 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 [2018-10-24 01:38:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 01:38:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 01:38:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 01:38:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 01:38:48,832 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 56 [2018-10-24 01:38:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:38:48,833 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 01:38:48,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:38:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 01:38:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 01:38:48,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:38:48,843 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, 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 01:38:48,843 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:38:48,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:38:48,844 INFO L82 PathProgramCache]: Analyzing trace with hash 167474839, now seen corresponding path program 1 times [2018-10-24 01:38:48,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:38:48,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:48,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:38:48,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:48,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:38:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:38:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:38:49,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:38:49,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:38:49,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:38:49,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:38:49,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:38:49,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:38:49,217 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 01:38:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:38:51,223 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 01:38:51,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:38:51,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 01:38:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:38:51,231 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 01:38:51,232 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 01:38:51,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:38:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 01:38:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 01:38:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 01:38:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 01:38:51,279 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 143 [2018-10-24 01:38:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:38:51,279 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 01:38:51,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:38:51,280 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 01:38:51,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 01:38:51,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:38:51,287 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, 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] [2018-10-24 01:38:51,287 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:38:51,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:38:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1433253212, now seen corresponding path program 1 times [2018-10-24 01:38:51,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:38:51,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:51,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:38:51,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:51,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:38:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:38:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:38:51,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:38:51,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:38:51,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:38:51,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:38:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:38:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:38:51,524 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 01:38:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:38:55,659 INFO L93 Difference]: Finished difference Result 2350 states and 4002 transitions. [2018-10-24 01:38:55,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:38:55,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-24 01:38:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:38:55,681 INFO L225 Difference]: With dead ends: 2350 [2018-10-24 01:38:55,682 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 01:38:55,692 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 [2018-10-24 01:38:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 01:38:55,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 01:38:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 01:38:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2678 transitions. [2018-10-24 01:38:55,781 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2678 transitions. Word has length 152 [2018-10-24 01:38:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:38:55,782 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2678 transitions. [2018-10-24 01:38:55,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:38:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2678 transitions. [2018-10-24 01:38:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-24 01:38:55,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:38:55,793 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:55,793 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:38:55,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:38:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash -830750464, now seen corresponding path program 1 times [2018-10-24 01:38:55,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:38:55,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:55,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:38:55,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:38:55,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:38:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:38:56,423 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 01:38:57,003 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-24 01:38:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:38:57,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:38:57,574 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:38:57,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-24 01:38:57,577 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [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], [562], [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], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:38:57,660 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:38:57,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:38:59,566 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:39:02,428 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:39:02,434 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:39:02,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:39:02,480 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:39:05,649 INFO L232 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 78.05% of their original sizes. [2018-10-24 01:39:05,650 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:39:06,106 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:39:06,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:39:06,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 01:39:06,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:39:06,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:39:06,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:39:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:39:06,110 INFO L87 Difference]: Start difference. First operand 1731 states and 2678 transitions. Second operand 7 states. [2018-10-24 01:39:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:39:33,266 INFO L93 Difference]: Finished difference Result 3641 states and 5641 transitions. [2018-10-24 01:39:33,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:39:33,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2018-10-24 01:39:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:39:33,281 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 01:39:33,281 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 01:39:33,290 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:39:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 01:39:33,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 01:39:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 01:39:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2869 transitions. [2018-10-24 01:39:33,357 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2869 transitions. Word has length 256 [2018-10-24 01:39:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:39:33,358 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2869 transitions. [2018-10-24 01:39:33,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:39:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2869 transitions. [2018-10-24 01:39:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-24 01:39:33,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:39:33,370 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, 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, 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] [2018-10-24 01:39:33,371 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:39:33,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:39:33,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1183303121, now seen corresponding path program 1 times [2018-10-24 01:39:33,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:39:33,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:39:33,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:39:33,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:39:33,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:39:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:39:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:39:34,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:39:34,303 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:39:34,303 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-10-24 01:39:34,304 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [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], [562], [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], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:39:34,310 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:39:34,311 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:39:35,582 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:39:40,364 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:39:40,364 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 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 01:39:40,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:39:40,374 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:39:43,887 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-24 01:39:43,887 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:40:06,202 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:40:06,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:40:06,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 01:40:06,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:40:06,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 01:40:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 01:40:06,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 01:40:06,205 INFO L87 Difference]: Start difference. First operand 1914 states and 2869 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 01:42:32,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 01:42:32,418 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:42:32,424 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:42:32,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:42:32 BoogieIcfgContainer [2018-10-24 01:42:32,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:42:32,426 INFO L168 Benchmark]: Toolchain (without parser) took 231806.41 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 381.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:42:32,427 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:42:32,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.28 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:42:32,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:42:32,429 INFO L168 Benchmark]: Boogie Preprocessor took 83.69 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:42:32,430 INFO L168 Benchmark]: RCFGBuilder took 3882.67 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: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:42:32,431 INFO L168 Benchmark]: TraceAbstraction took 226872.49 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 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 283.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:42:32,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.28 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.69 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3882.67 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: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226872.49 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 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 283.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2641 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 226.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 181.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 719 SDtfs, 4827 SDslu, 499 SDs, 0 SdLazy, 5828 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 622 GetRequests, 561 SyntacticMatches, 23 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 24.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958927049080502 AbsIntWeakeningRatio, 0.09747899159663866 AbsIntAvgWeakeningVarsNumRemoved, 600.3983193277311 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 948 NumberOfCodeBlocks, 948 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 943 ConstructedInterpolants, 0 QuantifiedInterpolants, 2796814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 521/687 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown