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/Problem12_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:21:16,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:21:16,586 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:21:16,599 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:21:16,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:21:16,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:21:16,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:21:16,603 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:21:16,604 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:21:16,605 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:21:16,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:21:16,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:21:16,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:21:16,608 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:21:16,609 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:21:16,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:21:16,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:21:16,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:21:16,615 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:21:16,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:21:16,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:21:16,619 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:21:16,622 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:21:16,635 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:21:16,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:21:16,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:21:16,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:21:16,666 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:21:16,666 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:21:16,666 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:21:16,667 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:21:16,667 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:21:16,667 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:21:16,667 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:21:16,667 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:21:16,668 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:21:16,668 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:21:16,669 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:21:16,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:21:16,669 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:21:16,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:21:16,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:21:16,670 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:21:16,670 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:21:16,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:21:16,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:21:16,670 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:21:16,671 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:21:16,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:21:16,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:21:16,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:21:16,671 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:21:16,672 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:21:16,672 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:21:16,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:21:16,672 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:21:16,672 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:21:16,673 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:21:16,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:21:16,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:21:16,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:21:16,742 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:21:16,743 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:21:16,744 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-10-24 18:21:16,825 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c38dc4b1e/077fe2ddcbb0499db8ba26a544a81f10/FLAGa1dd17e01 [2018-10-24 18:21:17,631 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:21:17,632 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-10-24 18:21:17,668 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c38dc4b1e/077fe2ddcbb0499db8ba26a544a81f10/FLAGa1dd17e01 [2018-10-24 18:21:17,690 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c38dc4b1e/077fe2ddcbb0499db8ba26a544a81f10 [2018-10-24 18:21:17,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:21:17,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:21:17,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:21:17,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:21:17,715 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:21:17,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:21:17" (1/1) ... [2018-10-24 18:21:17,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:17, skipping insertion in model container [2018-10-24 18:21:17,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:21:17" (1/1) ... [2018-10-24 18:21:17,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:21:17,897 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:21:19,322 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:21:19,327 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:21:19,939 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:21:19,971 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:21:19,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19 WrapperNode [2018-10-24 18:21:19,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:21:19,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:21:19,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:21:19,973 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:21:19,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:21:20,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:21:20,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:21:20,477 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:21:20,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... [2018-10-24 18:21:20,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:21:20,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:21:20,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:21:20,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:21:20,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:21:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:21:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:21:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:21:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:21:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:21:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:21:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:21:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:21:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:21:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:21:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:21:20,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:21:20,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:21:20,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:21:32,301 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:21:32,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:32 BoogieIcfgContainer [2018-10-24 18:21:32,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:21:32,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:21:32,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:21:32,307 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:21:32,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:21:17" (1/3) ... [2018-10-24 18:21:32,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b73a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:32, skipping insertion in model container [2018-10-24 18:21:32,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:19" (2/3) ... [2018-10-24 18:21:32,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279b73a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:32, skipping insertion in model container [2018-10-24 18:21:32,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:32" (3/3) ... [2018-10-24 18:21:32,311 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label55_false-unreach-call.c [2018-10-24 18:21:32,322 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:21:32,332 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:21:32,352 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:21:32,398 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:21:32,399 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:21:32,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:21:32,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:21:32,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:21:32,399 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:21:32,400 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:21:32,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:21:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 18:21:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 18:21:32,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:32,449 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:21:32,452 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:32,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:32,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2129497701, now seen corresponding path program 1 times [2018-10-24 18:21:32,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:32,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:32,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:32,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:32,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:32,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:32,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:21:32,841 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:32,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:21:32,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:21:32,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:21:32,869 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-24 18:21:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:45,429 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-24 18:21:45,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:21:45,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-24 18:21:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:45,474 INFO L225 Difference]: With dead ends: 3234 [2018-10-24 18:21:45,474 INFO L226 Difference]: Without dead ends: 2388 [2018-10-24 18:21:45,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:21:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-24 18:21:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-24 18:21:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-24 18:21:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-10-24 18:21:45,705 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 15 [2018-10-24 18:21:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:45,705 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-10-24 18:21:45,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:21:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-10-24 18:21:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-24 18:21:45,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:45,711 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:21:45,712 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:45,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash -135376495, now seen corresponding path program 1 times [2018-10-24 18:21:45,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:45,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:45,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:45,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:45,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:46,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:46,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:21:46,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:46,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:21:46,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:21:46,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:21:46,123 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-10-24 18:22:04,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:04,306 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-10-24 18:22:04,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:04,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-10-24 18:22:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:04,359 INFO L225 Difference]: With dead ends: 9463 [2018-10-24 18:22:04,359 INFO L226 Difference]: Without dead ends: 7081 [2018-10-24 18:22:04,374 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 18:22:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-10-24 18:22:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-10-24 18:22:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-10-24 18:22:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-10-24 18:22:04,596 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 96 [2018-10-24 18:22:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:04,597 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-10-24 18:22:04,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-10-24 18:22:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 18:22:04,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:04,602 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:04,603 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:04,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -87022815, now seen corresponding path program 1 times [2018-10-24 18:22:04,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:04,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:04,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:04,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:04,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:04,943 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:22:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:05,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:22:05,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:22:05,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:05,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:22:05,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:22:05,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:22:05,347 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-10-24 18:22:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:15,921 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-10-24 18:22:15,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:15,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 18:22:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:16,015 INFO L225 Difference]: With dead ends: 23489 [2018-10-24 18:22:16,015 INFO L226 Difference]: Without dead ends: 16458 [2018-10-24 18:22:16,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:22:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-10-24 18:22:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-10-24 18:22:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-10-24 18:22:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-10-24 18:22:16,477 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 104 [2018-10-24 18:22:16,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:16,477 INFO L481 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-10-24 18:22:16,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-10-24 18:22:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 18:22:16,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:16,490 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:16,490 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:16,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1280943624, now seen corresponding path program 1 times [2018-10-24 18:22:16,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:16,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:16,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:16,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:16,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:16,770 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:22:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:16,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:22:16,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:22:16,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:16,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:22:16,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:22:16,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:22:16,891 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-10-24 18:22:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:31,165 INFO L93 Difference]: Finished difference Result 42327 states and 60127 transitions. [2018-10-24 18:22:31,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:31,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 18:22:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:31,298 INFO L225 Difference]: With dead ends: 42327 [2018-10-24 18:22:31,298 INFO L226 Difference]: Without dead ends: 25964 [2018-10-24 18:22:31,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:22:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25964 states. [2018-10-24 18:22:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25964 to 25854. [2018-10-24 18:22:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25854 states. [2018-10-24 18:22:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25854 states to 25854 states and 33995 transitions. [2018-10-24 18:22:32,187 INFO L78 Accepts]: Start accepts. Automaton has 25854 states and 33995 transitions. Word has length 115 [2018-10-24 18:22:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:32,188 INFO L481 AbstractCegarLoop]: Abstraction has 25854 states and 33995 transitions. [2018-10-24 18:22:32,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 25854 states and 33995 transitions. [2018-10-24 18:22:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 18:22:32,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:32,195 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:32,196 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:32,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1522182260, now seen corresponding path program 1 times [2018-10-24 18:22:32,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:32,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:32,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:32,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:22:32,671 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:22:32,672 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-24 18:22:32,674 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1887], [1889], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2404], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 18:22:32,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:22:32,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:22:38,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:22:38,172 INFO L272 AbstractInterpreter]: Visited 89 different actions 171 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 18:22:38,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:38,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:22:41,081 INFO L232 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 74.92% of their original sizes. [2018-10-24 18:22:41,081 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:22:49,467 INFO L413 sIntCurrentIteration]: We have 171 unified AI predicates [2018-10-24 18:22:49,467 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:22:49,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:22:49,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-24 18:22:49,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:49,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 18:22:49,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 18:22:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-10-24 18:22:49,471 INFO L87 Difference]: Start difference. First operand 25854 states and 33995 transitions. Second operand 22 states. [2018-10-24 18:23:23,592 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:25:01,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 18:25:01,059 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:25:01,064 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:25:01,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:25:01 BoogieIcfgContainer [2018-10-24 18:25:01,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:25:01,066 INFO L168 Benchmark]: Toolchain (without parser) took 223361.15 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -24.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:25:01,067 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:25:01,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2265.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:25:01,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 503.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:25:01,070 INFO L168 Benchmark]: Boogie Preprocessor took 270.41 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: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:25:01,071 INFO L168 Benchmark]: RCFGBuilder took 11555.07 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 194.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -215.1 MB). Peak memory consumption was 676.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:25:01,072 INFO L168 Benchmark]: TraceAbstraction took 208761.65 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 997.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 18:25:01,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2265.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 503.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 270.41 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: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11555.07 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 194.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -215.1 MB). Peak memory consumption was 676.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208761.65 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 997.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (25854states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (13323 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 187.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1032 SDtfs, 17419 SDslu, 1129 SDs, 0 SdLazy, 27207 SolverSat, 6428 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 98.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 217 GetRequests, 155 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25854occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934143049932522 AbsIntWeakeningRatio, 0.15789473684210525 AbsIntAvgWeakeningVarsNumRemoved, 519.8011695906433 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 243 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 502 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 284076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 114/116 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown