java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem16_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:33:00,782 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:33:00,787 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:33:00,800 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:33:00,800 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:33:00,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:33:00,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:33:00,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:33:00,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:33:00,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:33:00,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:33:00,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:33:00,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:33:00,811 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:33:00,812 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:33:00,813 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:33:00,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:33:00,815 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:33:00,817 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:33:00,819 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:33:00,820 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:33:00,822 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:33:00,824 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:33:00,835 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:33:00,862 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:33:00,862 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:33:00,863 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:33:00,864 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:33:00,864 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:33:00,864 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:33:00,864 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:33:00,865 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:33:00,865 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:33:00,865 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:33:00,865 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:33:00,865 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:33:00,866 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:33:00,866 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:33:00,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:33:00,868 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:33:00,868 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:33:00,868 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:33:00,868 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:33:00,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:33:00,869 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:33:00,869 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:33:00,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:33:00,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:33:00,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:33:00,871 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:33:00,871 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:33:00,871 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:33:00,871 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:33:00,872 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:33:00,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:33:00,872 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:33:00,872 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:33:00,872 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:33:00,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:33:00,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:33:00,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:33:00,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:33:00,957 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:33:00,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-07 00:33:01,027 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5459b8f/c4cf43d43cb64fc5866ba37873caf084/FLAGc9c281e8f [2018-11-07 00:33:01,741 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:33:01,742 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-07 00:33:01,759 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5459b8f/c4cf43d43cb64fc5866ba37873caf084/FLAGc9c281e8f [2018-11-07 00:33:01,774 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5459b8f/c4cf43d43cb64fc5866ba37873caf084 [2018-11-07 00:33:01,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:33:01,788 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:33:01,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:33:01,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:33:01,793 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:33:01,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:01" (1/1) ... [2018-11-07 00:33:01,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f74ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:01, skipping insertion in model container [2018-11-07 00:33:01,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:33:01" (1/1) ... [2018-11-07 00:33:01,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:33:01,899 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:33:02,732 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:33:02,740 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:33:03,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:33:03,048 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:33:03,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03 WrapperNode [2018-11-07 00:33:03,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:33:03,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:33:03,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:33:03,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:33:03,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:33:03,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:33:03,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:33:03,278 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:33:03,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... [2018-11-07 00:33:03,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:33:03,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:33:03,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:33:03,440 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:33:03,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 00:33:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:33:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:33:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:33:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:33:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:33:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:33:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:33:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:33:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:33:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:33:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:33:09,043 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:33:09,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:09 BoogieIcfgContainer [2018-11-07 00:33:09,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:33:09,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:33:09,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:33:09,050 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:33:09,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:33:01" (1/3) ... [2018-11-07 00:33:09,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:09, skipping insertion in model container [2018-11-07 00:33:09,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:33:03" (2/3) ... [2018-11-07 00:33:09,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:33:09, skipping insertion in model container [2018-11-07 00:33:09,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:33:09" (3/3) ... [2018-11-07 00:33:09,055 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label22_false-unreach-call.c [2018-11-07 00:33:09,065 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:33:09,074 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:33:09,090 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:33:09,133 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:33:09,133 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:33:09,133 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:33:09,133 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:33:09,134 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:33:09,134 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:33:09,134 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:33:09,134 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:33:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 00:33:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 00:33:09,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:33:09,181 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] [2018-11-07 00:33:09,186 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:33:09,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:09,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2015982012, now seen corresponding path program 1 times [2018-11-07 00:33:09,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:33:09,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:09,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:33:09,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:09,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:33:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:33:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:33:09,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:33:09,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:33:09,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:33:09,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:33:09,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:33:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:33:09,628 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 00:33:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:33:13,128 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 00:33:13,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:33:13,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-07 00:33:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:33:13,163 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 00:33:13,163 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 00:33:13,172 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:33:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 00:33:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 00:33:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 00:33:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 00:33:13,277 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 20 [2018-11-07 00:33:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:33:13,278 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 00:33:13,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:33:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 00:33:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 00:33:13,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:33:13,286 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:33:13,286 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:33:13,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:13,287 INFO L82 PathProgramCache]: Analyzing trace with hash -422584226, now seen corresponding path program 1 times [2018-11-07 00:33:13,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:33:13,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:13,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:33:13,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:13,289 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:33:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:33:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:33:13,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:33:13,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:33:13,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:33:13,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:33:13,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:33:13,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:33:13,689 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 00:33:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:33:20,843 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 00:33:20,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:33:20,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 00:33:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:33:20,874 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 00:33:20,874 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 00:33:20,881 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:33:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 00:33:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 00:33:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 00:33:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 00:33:20,969 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 128 [2018-11-07 00:33:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:33:20,970 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 00:33:20,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:33:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 00:33:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 00:33:20,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:33:20,974 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:33:20,975 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:33:20,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:20,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1897752243, now seen corresponding path program 1 times [2018-11-07 00:33:20,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:33:20,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:20,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:33:20,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:20,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:33:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:33:21,339 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:33:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:33:21,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:33:21,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:33:21,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:33:21,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:33:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:33:21,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:33:21,743 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 00:33:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:33:26,716 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 00:33:26,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:33:26,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 00:33:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:33:26,748 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 00:33:26,748 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 00:33:26,754 INFO L604 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 [2018-11-07 00:33:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 00:33:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 00:33:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 00:33:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 00:33:26,830 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 131 [2018-11-07 00:33:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:33:26,832 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 00:33:26,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:33:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 00:33:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 00:33:26,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:33:26,845 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:33:26,845 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:33:26,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1121354911, now seen corresponding path program 1 times [2018-11-07 00:33:26,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:33:26,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:26,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:33:26,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:33:26,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:33:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:33:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:33:27,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:33:27,162 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:33:27,163 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-07 00:33:27,165 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:33:27,236 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:33:27,237 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:33:29,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:33:29,749 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:33:29,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:33:29,759 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:33:31,908 INFO L227 lantSequenceWeakener]: Weakened 239 states. On average, predicates are now at 77.39% of their original sizes. [2018-11-07 00:33:31,909 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:33:32,355 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-07 00:33:32,356 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:33:32,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:33:32,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:33:32,357 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:33:32,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:33:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:33:32,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:33:32,359 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-11-07 00:33:34,882 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:34:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:34:07,028 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-11-07 00:34:07,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:34:07,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2018-11-07 00:34:07,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:34:07,044 INFO L225 Difference]: With dead ends: 5282 [2018-11-07 00:34:07,044 INFO L226 Difference]: Without dead ends: 2814 [2018-11-07 00:34:07,053 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 247 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:34:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-11-07 00:34:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-11-07 00:34:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 00:34:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 00:34:07,129 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 247 [2018-11-07 00:34:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:34:07,129 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 00:34:07,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:34:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 00:34:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-11-07 00:34:07,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:34:07,136 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:34:07,137 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:34:07,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:34:07,137 INFO L82 PathProgramCache]: Analyzing trace with hash 709063263, now seen corresponding path program 1 times [2018-11-07 00:34:07,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:34:07,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:34:07,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:34:07,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:34:07,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:34:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:34:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 134 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 00:34:07,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:34:07,740 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:34:07,740 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-11-07 00:34:07,741 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:34:07,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:34:07,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:34:09,334 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:34:17,637 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:34:17,638 INFO L272 AbstractInterpreter]: Visited 125 different actions 366 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:34:17,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:34:17,646 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:34:20,397 INFO L227 lantSequenceWeakener]: Weakened 120 states. On average, predicates are now at 77.86% of their original sizes. [2018-11-07 00:34:20,397 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:34:41,626 INFO L415 sIntCurrentIteration]: We unified 338 AI predicates to 338 [2018-11-07 00:34:41,626 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:34:41,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:34:41,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 00:34:41,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:34:41,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 00:34:41,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 00:34:41,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-11-07 00:34:41,629 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 23 states. Received shutdown request... [2018-11-07 00:37:05,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 00:37:05,665 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:37:05,672 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:37:05,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:37:05 BoogieIcfgContainer [2018-11-07 00:37:05,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:37:05,673 INFO L168 Benchmark]: Toolchain (without parser) took 243886.69 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 00:37:05,675 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:37:05,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1260.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:37:05,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:37:05,677 INFO L168 Benchmark]: Boogie Preprocessor took 162.24 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:37:05,678 INFO L168 Benchmark]: RCFGBuilder took 5605.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:37:05,678 INFO L168 Benchmark]: TraceAbstraction took 236626.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 806.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:37:05,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1260.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.24 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5605.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236626.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 806.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (2812states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (669 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 236.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 194.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 797 SDtfs, 6521 SDslu, 638 SDs, 0 SdLazy, 8412 SolverSat, 2289 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 618 GetRequests, 549 SyntacticMatches, 19 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 25.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958153414730989 AbsIntWeakeningRatio, 0.09931506849315068 AbsIntAvgWeakeningVarsNumRemoved, 584.0839041095891 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 865 NumberOfCodeBlocks, 865 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 860 ConstructedInterpolants, 0 QuantifiedInterpolants, 629923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 281/497 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown