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/Problem13_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:48:01,637 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:48:01,639 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:48:01,651 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:48:01,652 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:48:01,653 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:48:01,654 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:48:01,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:48:01,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:48:01,663 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:48:01,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:48:01,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:48:01,666 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:48:01,668 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:48:01,669 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:48:01,673 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:48:01,674 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:48:01,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:48:01,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:48:01,683 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:48:01,686 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:48:01,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:48:01,693 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:48:01,704 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 [2018-10-26 23:48:01,727 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:48:01,727 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:48:01,728 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:48:01,728 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:48:01,731 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:48:01,732 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:48:01,732 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:48:01,732 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:48:01,732 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:48:01,732 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:48:01,733 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:48:01,733 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:48:01,733 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:48:01,734 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:48:01,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:48:01,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:48:01,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:48:01,735 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:48:01,735 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:48:01,736 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:48:01,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:48:01,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:48:01,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:48:01,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:48:01,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:48:01,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:48:01,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:48:01,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:48:01,738 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:48:01,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:48:01,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:48:01,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:48:01,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:48:01,739 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:48:01,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:48:01,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:48:01,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:48:01,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:48:01,831 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:48:01,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-10-26 23:48:01,892 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7720b36d9/32ef99d56ece4e3290de9d3ca00de8cb/FLAG9b267e8f0 [2018-10-26 23:48:02,660 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:48:02,661 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-10-26 23:48:02,702 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7720b36d9/32ef99d56ece4e3290de9d3ca00de8cb/FLAG9b267e8f0 [2018-10-26 23:48:02,721 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7720b36d9/32ef99d56ece4e3290de9d3ca00de8cb [2018-10-26 23:48:02,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:48:02,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:48:02,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:48:02,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:48:02,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:48:02,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:02" (1/1) ... [2018-10-26 23:48:02,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614a20c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:02, skipping insertion in model container [2018-10-26 23:48:02,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:02" (1/1) ... [2018-10-26 23:48:02,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:48:02,966 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:48:04,508 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:48:04,513 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:48:05,200 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:48:05,238 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:48:05,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05 WrapperNode [2018-10-26 23:48:05,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:48:05,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:48:05,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:48:05,240 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:48:05,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:05,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:05,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:48:05,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:48:05,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:48:05,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:48:05,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:05,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:05,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:05,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:06,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:06,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:06,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (1/1) ... [2018-10-26 23:48:06,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:48:06,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:48:06,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:48:06,162 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:48:06,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (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 [2018-10-26 23:48:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:48:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:48:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-26 23:48:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-26 23:48:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-26 23:48:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-26 23:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-26 23:48:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-26 23:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:48:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:48:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:48:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:48:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:48:17,329 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:48:17,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:17 BoogieIcfgContainer [2018-10-26 23:48:17,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:48:17,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:48:17,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:48:17,335 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:48:17,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:48:02" (1/3) ... [2018-10-26 23:48:17,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5491a4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:17, skipping insertion in model container [2018-10-26 23:48:17,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:05" (2/3) ... [2018-10-26 23:48:17,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5491a4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:17, skipping insertion in model container [2018-10-26 23:48:17,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:17" (3/3) ... [2018-10-26 23:48:17,338 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label29_false-unreach-call.c [2018-10-26 23:48:17,349 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:48:17,359 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:48:17,379 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:48:17,446 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:48:17,446 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:48:17,446 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:48:17,446 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:48:17,447 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:48:17,447 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:48:17,447 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:48:17,447 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:48:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-26 23:48:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 23:48:17,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:17,520 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:17,522 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:17,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1714801547, now seen corresponding path program 1 times [2018-10-26 23:48:17,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:48:17,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:17,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:48:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:48:17,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:48:17,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:48:17,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:48:17,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:48:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:48:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:48:17,992 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-26 23:48:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:34,001 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-26 23:48:34,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:48:34,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-26 23:48:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:34,047 INFO L225 Difference]: With dead ends: 3968 [2018-10-26 23:48:34,048 INFO L226 Difference]: Without dead ends: 2842 [2018-10-26 23:48:34,060 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 [2018-10-26 23:48:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-26 23:48:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-26 23:48:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-26 23:48:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-26 23:48:34,214 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 21 [2018-10-26 23:48:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:34,214 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-26 23:48:34,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:48:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-26 23:48:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-26 23:48:34,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:34,220 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:34,220 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:34,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:34,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1914103630, now seen corresponding path program 1 times [2018-10-26 23:48:34,221 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:48:34,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:34,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:34,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:34,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:48:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:48:34,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:48:34,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:48:34,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:48:34,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:34,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:34,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:34,569 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-26 23:48:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:48:47,360 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-26 23:48:47,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:48:47,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-26 23:48:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:48:47,392 INFO L225 Difference]: With dead ends: 5673 [2018-10-26 23:48:47,393 INFO L226 Difference]: Without dead ends: 3698 [2018-10-26 23:48:47,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:48:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-26 23:48:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-26 23:48:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-26 23:48:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-26 23:48:47,511 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 91 [2018-10-26 23:48:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:48:47,513 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-26 23:48:47,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:48:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-26 23:48:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-26 23:48:47,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:48:47,516 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:48:47,516 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:48:47,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:48:47,520 INFO L82 PathProgramCache]: Analyzing trace with hash 688522610, now seen corresponding path program 1 times [2018-10-26 23:48:47,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:48:47,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:47,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:48:47,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:48:47,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:48:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:48:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:48:47,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:48:47,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:48:47,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:48:47,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:48:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:48:47,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:48:47,677 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-26 23:49:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:49:00,139 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-26 23:49:00,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:49:00,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-10-26 23:49:00,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:49:00,180 INFO L225 Difference]: With dead ends: 10963 [2018-10-26 23:49:00,180 INFO L226 Difference]: Without dead ends: 7282 [2018-10-26 23:49:00,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:49:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-26 23:49:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-26 23:49:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-26 23:49:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-26 23:49:00,382 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 93 [2018-10-26 23:49:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:49:00,382 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-26 23:49:00,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:49:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-26 23:49:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-26 23:49:00,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:00,395 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:00,395 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:00,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:00,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1754078826, now seen corresponding path program 1 times [2018-10-26 23:49:00,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:49:00,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:00,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:00,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:00,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:49:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:49:00,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:49:00,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:49:00,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:49:00,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:49:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:49:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:49:00,606 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 3 states. [2018-10-26 23:49:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:49:07,268 INFO L93 Difference]: Finished difference Result 21003 states and 32063 transitions. [2018-10-26 23:49:07,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:49:07,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-10-26 23:49:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:49:07,328 INFO L225 Difference]: With dead ends: 21003 [2018-10-26 23:49:07,328 INFO L226 Difference]: Without dead ends: 13834 [2018-10-26 23:49:07,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:49:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2018-10-26 23:49:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 13825. [2018-10-26 23:49:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13825 states. [2018-10-26 23:49:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 19394 transitions. [2018-10-26 23:49:07,695 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 19394 transitions. Word has length 137 [2018-10-26 23:49:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:49:07,696 INFO L481 AbstractCegarLoop]: Abstraction has 13825 states and 19394 transitions. [2018-10-26 23:49:07,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:49:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 19394 transitions. [2018-10-26 23:49:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-26 23:49:07,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:07,699 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:07,700 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:07,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1376680716, now seen corresponding path program 1 times [2018-10-26 23:49:07,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:49:07,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:07,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:07,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:07,703 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:49:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:49:07,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:49:07,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:49:07,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:49:07,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:49:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:49:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:49:07,919 INFO L87 Difference]: Start difference. First operand 13825 states and 19394 transitions. Second operand 4 states. [2018-10-26 23:49:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:49:18,778 INFO L93 Difference]: Finished difference Result 53953 states and 81179 transitions. [2018-10-26 23:49:18,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:49:18,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-26 23:49:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:49:18,952 INFO L225 Difference]: With dead ends: 53953 [2018-10-26 23:49:18,953 INFO L226 Difference]: Without dead ends: 39321 [2018-10-26 23:49:19,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:49:19,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39321 states. [2018-10-26 23:49:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39321 to 39285. [2018-10-26 23:49:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39285 states. [2018-10-26 23:49:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39285 states to 39285 states and 54287 transitions. [2018-10-26 23:49:19,965 INFO L78 Accepts]: Start accepts. Automaton has 39285 states and 54287 transitions. Word has length 142 [2018-10-26 23:49:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:49:19,965 INFO L481 AbstractCegarLoop]: Abstraction has 39285 states and 54287 transitions. [2018-10-26 23:49:19,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:49:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 39285 states and 54287 transitions. [2018-10-26 23:49:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-26 23:49:19,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:19,972 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:19,972 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:19,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1914147908, now seen corresponding path program 1 times [2018-10-26 23:49:19,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:49:19,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:19,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:19,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:49:19,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:49:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:20,235 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:49:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:49:20,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:49:20,636 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:49:20,637 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-26 23:49:20,639 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2695], [2697], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-26 23:49:20,711 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:49:20,711 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:49:26,394 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:49:26,396 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-26 23:49:26,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:26,415 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:49:29,642 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 71.23% of their original sizes. [2018-10-26 23:49:29,643 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:49:31,077 INFO L415 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2018-10-26 23:49:31,078 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:49:31,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:49:31,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-26 23:49:31,079 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:49:31,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:49:31,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:49:31,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:49:31,080 INFO L87 Difference]: Start difference. First operand 39285 states and 54287 transitions. Second operand 10 states. [2018-10-26 23:50:15,821 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-26 23:51:41,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:51:41,699 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:51:41,706 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:51:41,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:51:41 BoogieIcfgContainer [2018-10-26 23:51:41,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:51:41,707 INFO L168 Benchmark]: Toolchain (without parser) took 218973.21 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 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 665.6 MB. Max. memory is 7.1 GB. [2018-10-26 23:51:41,708 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 23:51:41,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2502.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:51:41,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 610.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 818.4 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 23:51:41,711 INFO L168 Benchmark]: Boogie Preprocessor took 310.48 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: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2018-10-26 23:51:41,712 INFO L168 Benchmark]: RCFGBuilder took 11168.45 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 171.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.9 MB). Peak memory consumption was 660.0 MB. Max. memory is 7.1 GB. [2018-10-26 23:51:41,713 INFO L168 Benchmark]: TraceAbstraction took 204375.02 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 440.5 MB. Max. memory is 7.1 GB. [2018-10-26 23:51:41,718 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2502.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 610.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 818.4 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 310.48 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: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11168.45 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 171.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.9 MB). Peak memory consumption was 660.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204375.02 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 440.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (39285states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (6084 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 204.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 189.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4110 SDtfs, 13053 SDslu, 2248 SDs, 0 SdLazy, 23411 SolverSat, 6163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 215 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39285occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9945853029651911 AbsIntWeakeningRatio, 0.15083798882681565 AbsIntAvgWeakeningVarsNumRemoved, 55.84357541899441 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1024 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 228262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 89/156 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown