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_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:26:05,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:26:05,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:26:05,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:26:05,637 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:26:05,638 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:26:05,640 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:26:05,642 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:26:05,644 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:26:05,646 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:26:05,647 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:26:05,648 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:26:05,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:26:05,655 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:26:05,662 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:26:05,663 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:26:05,664 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:26:05,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:26:05,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:26:05,678 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:26:05,679 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:26:05,680 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:26:05,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:26:05,699 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:26:05,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:26:05,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:26:05,730 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:26:05,730 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:26:05,735 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:26:05,735 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:26:05,736 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:26:05,736 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:26:05,736 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:26:05,736 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:26:05,736 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:26:05,737 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:26:05,740 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:26:05,740 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:26:05,740 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:26:05,741 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:26:05,741 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:26:05,741 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:26:05,741 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:26:05,741 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:26:05,742 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:26:05,742 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:26:05,742 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:26:05,742 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:26:05,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:26:05,743 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:26:05,743 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:26:05,743 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:26:05,743 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:26:05,743 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:26:05,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:26:05,745 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:26:05,745 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:26:05,745 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:26:05,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:26:05,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:26:05,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:26:05,845 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:26:05,845 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:26:05,846 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-10-24 18:26:05,917 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab9f13b32/8e3ad3b770214f05a8c51951bba79a08/FLAG91ae90e48 [2018-10-24 18:26:06,707 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:26:06,708 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-10-24 18:26:06,749 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab9f13b32/8e3ad3b770214f05a8c51951bba79a08/FLAG91ae90e48 [2018-10-24 18:26:06,770 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab9f13b32/8e3ad3b770214f05a8c51951bba79a08 [2018-10-24 18:26:06,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:26:06,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:26:06,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:26:06,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:26:06,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:26:06,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:26:06" (1/1) ... [2018-10-24 18:26:06,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:06, skipping insertion in model container [2018-10-24 18:26:06,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:26:06" (1/1) ... [2018-10-24 18:26:06,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:26:07,000 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:26:08,525 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:26:08,530 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:26:09,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:26:09,322 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:26:09,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09 WrapperNode [2018-10-24 18:26:09,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:26:09,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:26:09,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:26:09,324 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:26:09,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:09,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:09,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:26:09,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:26:09,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:26:09,930 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:26:09,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:09,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:09,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:09,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:10,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:10,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:10,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... [2018-10-24 18:26:10,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:26:10,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:26:10,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:26:10,286 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:26:10,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:26:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:26:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:26:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:26:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:26:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:26:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:26:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:26:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:26:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:26:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:26:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:26:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:26:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:26:10,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:26:21,863 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:26:21,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:26:21 BoogieIcfgContainer [2018-10-24 18:26:21,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:26:21,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:26:21,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:26:21,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:26:21,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:26:06" (1/3) ... [2018-10-24 18:26:21,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf2b5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:26:21, skipping insertion in model container [2018-10-24 18:26:21,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:26:09" (2/3) ... [2018-10-24 18:26:21,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf2b5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:26:21, skipping insertion in model container [2018-10-24 18:26:21,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:26:21" (3/3) ... [2018-10-24 18:26:21,873 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label45_false-unreach-call.c [2018-10-24 18:26:21,883 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:26:21,894 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:26:21,911 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:26:21,976 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:26:21,976 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:26:21,977 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:26:21,977 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:26:21,977 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:26:21,977 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:26:21,977 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:26:21,978 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:26:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:26:22,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 18:26:22,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:22,045 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:22,047 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:22,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1438906236, now seen corresponding path program 1 times [2018-10-24 18:26:22,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:22,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:22,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:22,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:22,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:22,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:22,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:26:22,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:22,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:26:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:26:22,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:26:22,464 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 18:26:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:39,467 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-10-24 18:26:39,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:26:39,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-24 18:26:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:39,534 INFO L225 Difference]: With dead ends: 4063 [2018-10-24 18:26:39,534 INFO L226 Difference]: Without dead ends: 2937 [2018-10-24 18:26:39,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:26:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-24 18:26:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-10-24 18:26:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-10-24 18:26:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-10-24 18:26:39,741 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 14 [2018-10-24 18:26:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:39,742 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-10-24 18:26:39,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:26:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-10-24 18:26:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 18:26:39,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:39,747 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:26:39,748 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:39,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:39,748 INFO L82 PathProgramCache]: Analyzing trace with hash 78818025, now seen corresponding path program 1 times [2018-10-24 18:26:39,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:39,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:39,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:39,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:39,750 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:40,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:40,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:26:40,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:40,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:26:40,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:26:40,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:26:40,214 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-10-24 18:26:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:59,649 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-10-24 18:26:59,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:26:59,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-10-24 18:26:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:59,687 INFO L225 Difference]: With dead ends: 7277 [2018-10-24 18:26:59,687 INFO L226 Difference]: Without dead ends: 5301 [2018-10-24 18:26:59,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:26:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-10-24 18:26:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-10-24 18:26:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-10-24 18:26:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-10-24 18:26:59,864 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 85 [2018-10-24 18:26:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:59,865 INFO L481 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-10-24 18:26:59,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:26:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-10-24 18:26:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 18:26:59,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:59,869 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:26:59,869 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:59,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:59,870 INFO L82 PathProgramCache]: Analyzing trace with hash 418123736, now seen corresponding path program 1 times [2018-10-24 18:26:59,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:59,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:59,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:59,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:59,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:00,159 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:27:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:27:00,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:27:00,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:27:00,538 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:27:00,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:27:00,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:27:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:27:00,539 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-10-24 18:27:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:27:14,494 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-10-24 18:27:14,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:27:14,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-10-24 18:27:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:27:14,546 INFO L225 Difference]: With dead ends: 13914 [2018-10-24 18:27:14,547 INFO L226 Difference]: Without dead ends: 8668 [2018-10-24 18:27:14,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:27:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-10-24 18:27:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-10-24 18:27:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-10-24 18:27:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-10-24 18:27:14,802 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 88 [2018-10-24 18:27:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:27:14,803 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-10-24 18:27:14,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:27:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-10-24 18:27:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:27:14,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:27:14,807 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:27:14,807 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:27:14,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:27:14,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1382541628, now seen corresponding path program 1 times [2018-10-24 18:27:14,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:27:14,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:14,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:27:14,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:14,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:27:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:27:15,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:27:15,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:27:15,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:27:15,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:27:15,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:27:15,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:27:15,132 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-10-24 18:27:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:27:30,206 INFO L93 Difference]: Finished difference Result 25983 states and 40339 transitions. [2018-10-24 18:27:30,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:27:30,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-24 18:27:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:27:30,307 INFO L225 Difference]: With dead ends: 25983 [2018-10-24 18:27:30,307 INFO L226 Difference]: Without dead ends: 17384 [2018-10-24 18:27:30,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:27:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17384 states. [2018-10-24 18:27:30,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17384 to 17119. [2018-10-24 18:27:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17119 states. [2018-10-24 18:27:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17119 states to 17119 states and 24326 transitions. [2018-10-24 18:27:30,770 INFO L78 Accepts]: Start accepts. Automaton has 17119 states and 24326 transitions. Word has length 98 [2018-10-24 18:27:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:27:30,771 INFO L481 AbstractCegarLoop]: Abstraction has 17119 states and 24326 transitions. [2018-10-24 18:27:30,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:27:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17119 states and 24326 transitions. [2018-10-24 18:27:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 18:27:30,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:27:30,774 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:27:30,774 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:27:30,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:27:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash -916894984, now seen corresponding path program 1 times [2018-10-24 18:27:30,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:27:30,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:30,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:27:30,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:30,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:27:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:27:30,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:27:30,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:27:30,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:27:30,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:27:30,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:27:30,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:27:30,909 INFO L87 Difference]: Start difference. First operand 17119 states and 24326 transitions. Second operand 3 states. [2018-10-24 18:27:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:27:38,373 INFO L93 Difference]: Finished difference Result 47368 states and 71014 transitions. [2018-10-24 18:27:38,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:27:38,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-10-24 18:27:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:27:38,516 INFO L225 Difference]: With dead ends: 47368 [2018-10-24 18:27:38,516 INFO L226 Difference]: Without dead ends: 30255 [2018-10-24 18:27:38,601 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 [2018-10-24 18:27:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30255 states. [2018-10-24 18:27:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30255 to 30253. [2018-10-24 18:27:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30253 states. [2018-10-24 18:27:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30253 states to 30253 states and 42729 transitions. [2018-10-24 18:27:39,639 INFO L78 Accepts]: Start accepts. Automaton has 30253 states and 42729 transitions. Word has length 115 [2018-10-24 18:27:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:27:39,639 INFO L481 AbstractCegarLoop]: Abstraction has 30253 states and 42729 transitions. [2018-10-24 18:27:39,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:27:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30253 states and 42729 transitions. [2018-10-24 18:27:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 18:27:39,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:27:39,644 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:27:39,644 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:27:39,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:27:39,645 INFO L82 PathProgramCache]: Analyzing trace with hash 196829947, now seen corresponding path program 1 times [2018-10-24 18:27:39,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:27:39,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:39,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:27:39,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:27:39,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:27:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:27:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:27:40,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:27:40,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:27:40,240 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:27:40,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:27:40,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:27:40,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:27:40,241 INFO L87 Difference]: Start difference. First operand 30253 states and 42729 transitions. Second operand 6 states. [2018-10-24 18:28:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:28:02,961 INFO L93 Difference]: Finished difference Result 98436 states and 150323 transitions. [2018-10-24 18:28:02,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:28:02,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-24 18:28:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:28:03,316 INFO L225 Difference]: With dead ends: 98436 [2018-10-24 18:28:03,317 INFO L226 Difference]: Without dead ends: 68189 [2018-10-24 18:28:03,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:28:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68189 states. [2018-10-24 18:28:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68189 to 68121. [2018-10-24 18:28:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68121 states. [2018-10-24 18:28:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68121 states to 68121 states and 98161 transitions. [2018-10-24 18:28:05,030 INFO L78 Accepts]: Start accepts. Automaton has 68121 states and 98161 transitions. Word has length 156 [2018-10-24 18:28:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:28:05,030 INFO L481 AbstractCegarLoop]: Abstraction has 68121 states and 98161 transitions. [2018-10-24 18:28:05,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:28:05,031 INFO L276 IsEmpty]: Start isEmpty. Operand 68121 states and 98161 transitions. [2018-10-24 18:28:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 18:28:05,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:05,039 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:28:05,040 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:05,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1968456128, now seen corresponding path program 1 times [2018-10-24 18:28:05,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:05,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:05,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:05,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:05,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 18:28:05,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:28:05,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:28:05,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:05,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:28:05,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:28:05,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:28:05,245 INFO L87 Difference]: Start difference. First operand 68121 states and 98161 transitions. Second operand 3 states. [2018-10-24 18:28:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:28:15,040 INFO L93 Difference]: Finished difference Result 136244 states and 197339 transitions. [2018-10-24 18:28:15,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:28:15,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-10-24 18:28:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:28:15,318 INFO L225 Difference]: With dead ends: 136244 [2018-10-24 18:28:15,318 INFO L226 Difference]: Without dead ends: 68129 [2018-10-24 18:28:15,530 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 [2018-10-24 18:28:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68129 states. [2018-10-24 18:28:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68129 to 68124. [2018-10-24 18:28:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68124 states. [2018-10-24 18:28:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68124 states to 68124 states and 92406 transitions. [2018-10-24 18:28:16,974 INFO L78 Accepts]: Start accepts. Automaton has 68124 states and 92406 transitions. Word has length 216 [2018-10-24 18:28:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:28:16,975 INFO L481 AbstractCegarLoop]: Abstraction has 68124 states and 92406 transitions. [2018-10-24 18:28:16,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:28:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 68124 states and 92406 transitions. [2018-10-24 18:28:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 18:28:16,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:16,986 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:28:16,987 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:16,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:16,988 INFO L82 PathProgramCache]: Analyzing trace with hash -967021314, now seen corresponding path program 1 times [2018-10-24 18:28:16,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:16,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:16,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:16,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:16,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:17,363 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:28:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:28:17,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:28:17,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:28:17,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:17,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:28:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:28:17,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:28:17,654 INFO L87 Difference]: Start difference. First operand 68124 states and 92406 transitions. Second operand 6 states. [2018-10-24 18:28:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:28:32,233 INFO L93 Difference]: Finished difference Result 176301 states and 264915 transitions. [2018-10-24 18:28:32,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:28:32,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-10-24 18:28:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:28:32,694 INFO L225 Difference]: With dead ends: 176301 [2018-10-24 18:28:32,695 INFO L226 Difference]: Without dead ends: 108183 [2018-10-24 18:28:32,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:28:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108183 states. [2018-10-24 18:28:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108183 to 107853. [2018-10-24 18:28:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107853 states. [2018-10-24 18:28:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107853 states to 107853 states and 147811 transitions. [2018-10-24 18:28:35,859 INFO L78 Accepts]: Start accepts. Automaton has 107853 states and 147811 transitions. Word has length 224 [2018-10-24 18:28:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:28:35,859 INFO L481 AbstractCegarLoop]: Abstraction has 107853 states and 147811 transitions. [2018-10-24 18:28:35,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:28:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 107853 states and 147811 transitions. [2018-10-24 18:28:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 18:28:35,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:28:35,869 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 18:28:35,869 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:28:35,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1811019067, now seen corresponding path program 1 times [2018-10-24 18:28:35,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:28:35,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:35,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:28:35,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:28:35,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:28:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:28:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-24 18:28:36,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:28:36,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:28:36,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-10-24 18:28:36,115 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2639], [2641], [2644], [2652], [2660], [2668], [2676], [2684], [2692], [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], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3320], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:28:36,190 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:28:36,190 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:28:45,449 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:28:45,451 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:28:45,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:28:45,465 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:28:50,122 INFO L232 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 70.98% of their original sizes. [2018-10-24 18:28:50,123 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:28:51,648 INFO L413 sIntCurrentIteration]: We have 247 unified AI predicates [2018-10-24 18:28:51,648 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:28:51,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:28:51,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [3] total 12 [2018-10-24 18:28:51,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:28:51,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 18:28:51,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 18:28:51,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:28:51,651 INFO L87 Difference]: Start difference. First operand 107853 states and 147811 transitions. Second operand 11 states. [2018-10-24 18:29:30,028 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:29:38,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:29:38,200 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:29:38,206 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:29:38,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:29:38 BoogieIcfgContainer [2018-10-24 18:29:38,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:29:38,207 INFO L168 Benchmark]: Toolchain (without parser) took 211423.24 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -43.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 18:29:38,209 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:29:38,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2535.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:38,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 605.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:38,211 INFO L168 Benchmark]: Boogie Preprocessor took 356.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:38,212 INFO L168 Benchmark]: RCFGBuilder took 11577.78 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 176.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.4 MB). Peak memory consumption was 653.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:29:38,213 INFO L168 Benchmark]: TraceAbstraction took 196341.81 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 735.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 18:29:38,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2535.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 605.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 356.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11577.78 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 176.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.4 MB). Peak memory consumption was 653.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 196341.81 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 735.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (107853states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (384 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 196.2s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 168.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5455 SDtfs, 24616 SDslu, 3586 SDs, 0 SdLazy, 40059 SolverSat, 11875 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 127.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 312 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107853occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9962379321083774 AbsIntWeakeningRatio, 0.1214574898785425 AbsIntAvgWeakeningVarsNumRemoved, 42.65182186234818 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1737 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1244 NumberOfCodeBlocks, 1244 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1235 ConstructedInterpolants, 0 QuantifiedInterpolants, 705918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 275/277 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown