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/Problem01_label02_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:05:56,848 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:05:56,851 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:05:56,869 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:05:56,869 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:05:56,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:05:56,874 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:05:56,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:05:56,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:05:56,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:05:56,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:05:56,882 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:05:56,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:05:56,888 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:05:56,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:05:56,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:05:56,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:05:56,893 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:05:56,904 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:05:56,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:05:56,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:05:56,911 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:05:56,915 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:05:56,929 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 [2018-10-23 23:05:56,955 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:05:56,955 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:05:56,956 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:05:56,956 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:05:56,956 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:05:56,956 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:05:56,957 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:05:56,957 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:05:56,957 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:05:56,957 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:05:56,957 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:05:56,958 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:05:56,958 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:05:56,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:05:56,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:05:56,959 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:05:56,959 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:05:56,959 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:05:56,960 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:05:56,960 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:05:56,960 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:05:56,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:05:56,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:05:56,961 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:05:56,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:05:56,961 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:05:56,961 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:05:56,961 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:05:56,962 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:05:56,962 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:05:56,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:05:56,962 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:05:56,962 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:05:56,963 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:05:57,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:05:57,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:05:57,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:05:57,027 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:05:57,028 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:05:57,028 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label02_true-unreach-call_false-termination.c [2018-10-23 23:05:57,085 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f43503c1/30efa5b0a17645ecb5ad110d9b9c691a/FLAGff2bf8378 [2018-10-23 23:05:57,656 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:05:57,657 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label02_true-unreach-call_false-termination.c [2018-10-23 23:05:57,686 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f43503c1/30efa5b0a17645ecb5ad110d9b9c691a/FLAGff2bf8378 [2018-10-23 23:05:57,704 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f43503c1/30efa5b0a17645ecb5ad110d9b9c691a [2018-10-23 23:05:57,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:05:57,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:05:57,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:05:57,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:05:57,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:05:57,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:05:57" (1/1) ... [2018-10-23 23:05:57,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:57, skipping insertion in model container [2018-10-23 23:05:57,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:05:57" (1/1) ... [2018-10-23 23:05:57,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:05:57,818 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:05:58,325 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:05:58,330 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:05:58,437 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:05:58,459 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:05:58,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58 WrapperNode [2018-10-23 23:05:58,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:05:58,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:05:58,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:05:58,461 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:05:58,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:05:58,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:05:58,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:05:58,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:05:58,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (1/1) ... [2018-10-23 23:05:58,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:05:58,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:05:58,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:05:58,742 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:05:58,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (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 [2018-10-23 23:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:05:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:05:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:05:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:05:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:05:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:05:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:06:01,807 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:06:01,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:06:01 BoogieIcfgContainer [2018-10-23 23:06:01,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:06:01,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:06:01,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:06:01,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:06:01,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:05:57" (1/3) ... [2018-10-23 23:06:01,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:06:01, skipping insertion in model container [2018-10-23 23:06:01,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:05:58" (2/3) ... [2018-10-23 23:06:01,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:06:01, skipping insertion in model container [2018-10-23 23:06:01,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:06:01" (3/3) ... [2018-10-23 23:06:01,817 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label02_true-unreach-call_false-termination.c [2018-10-23 23:06:01,827 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:06:01,838 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:06:01,854 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:06:01,891 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:06:01,892 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:06:01,892 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:06:01,892 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:06:01,892 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:06:01,893 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:06:01,893 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:06:01,893 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:06:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 23:06:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-23 23:06:01,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:01,939 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:06:01,941 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:01,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:01,947 INFO L82 PathProgramCache]: Analyzing trace with hash -388203563, now seen corresponding path program 1 times [2018-10-23 23:06:01,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:01,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:01,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:02,591 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:06:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:02,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:06:02,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:06:02,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:06:02,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:06:02,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:06:02,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:06:02,799 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 23:06:04,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:06:04,495 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 23:06:04,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:06:04,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-10-23 23:06:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:06:04,517 INFO L225 Difference]: With dead ends: 550 [2018-10-23 23:06:04,518 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 23:06:04,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:06:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 23:06:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 23:06:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 23:06:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-10-23 23:06:04,604 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 97 [2018-10-23 23:06:04,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:06:04,605 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-10-23 23:06:04,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:06:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-10-23 23:06:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 23:06:04,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:04,613 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:06:04,613 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:04,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:04,613 INFO L82 PathProgramCache]: Analyzing trace with hash -663690794, now seen corresponding path program 1 times [2018-10-23 23:06:04,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:04,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:04,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:04,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:04,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:04,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:06:04,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:06:04,811 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:06:04,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:06:04,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:06:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:06:04,814 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-10-23 23:06:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:06:06,482 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-10-23 23:06:06,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:06:06,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-23 23:06:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:06:06,490 INFO L225 Difference]: With dead ends: 888 [2018-10-23 23:06:06,491 INFO L226 Difference]: Without dead ends: 554 [2018-10-23 23:06:06,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:06:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-10-23 23:06:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-10-23 23:06:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-23 23:06:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-10-23 23:06:06,544 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 108 [2018-10-23 23:06:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:06:06,544 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-10-23 23:06:06,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:06:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-10-23 23:06:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-23 23:06:06,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:06,552 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:06:06,552 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:06,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:06,553 INFO L82 PathProgramCache]: Analyzing trace with hash 280162818, now seen corresponding path program 1 times [2018-10-23 23:06:06,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:06,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:06,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:06,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:06,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:06,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:06:06,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:06:06,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:06:06,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:06:06,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:06:06,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:06:06,763 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-10-23 23:06:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:06:07,862 INFO L93 Difference]: Finished difference Result 1529 states and 2431 transitions. [2018-10-23 23:06:07,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:06:07,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2018-10-23 23:06:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:06:07,871 INFO L225 Difference]: With dead ends: 1529 [2018-10-23 23:06:07,871 INFO L226 Difference]: Without dead ends: 996 [2018-10-23 23:06:07,875 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 [2018-10-23 23:06:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2018-10-23 23:06:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 989. [2018-10-23 23:06:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2018-10-23 23:06:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1498 transitions. [2018-10-23 23:06:07,915 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1498 transitions. Word has length 109 [2018-10-23 23:06:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:06:07,916 INFO L481 AbstractCegarLoop]: Abstraction has 989 states and 1498 transitions. [2018-10-23 23:06:07,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:06:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1498 transitions. [2018-10-23 23:06:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 23:06:07,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:07,923 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:06:07,923 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:07,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:07,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1178712562, now seen corresponding path program 1 times [2018-10-23 23:06:07,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:07,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:07,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:07,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:07,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:08,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:06:08,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:06:08,248 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:06:08,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:06:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:06:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:06:08,250 INFO L87 Difference]: Start difference. First operand 989 states and 1498 transitions. Second operand 3 states. [2018-10-23 23:06:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:06:10,385 INFO L93 Difference]: Finished difference Result 2872 states and 4515 transitions. [2018-10-23 23:06:10,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:06:10,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-10-23 23:06:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:06:10,400 INFO L225 Difference]: With dead ends: 2872 [2018-10-23 23:06:10,400 INFO L226 Difference]: Without dead ends: 1889 [2018-10-23 23:06:10,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:06:10,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2018-10-23 23:06:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1886. [2018-10-23 23:06:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2018-10-23 23:06:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2743 transitions. [2018-10-23 23:06:10,488 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2743 transitions. Word has length 115 [2018-10-23 23:06:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:06:10,489 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 2743 transitions. [2018-10-23 23:06:10,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:06:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2743 transitions. [2018-10-23 23:06:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-23 23:06:10,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:06:10,497 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:06:10,497 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:06:10,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash 856948235, now seen corresponding path program 1 times [2018-10-23 23:06:10,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:06:10,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:10,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:06:10,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:06:10,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:06:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:06:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:06:10,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:06:10,985 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:06:10,986 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-10-23 23:06:10,989 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [73], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:06:11,092 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:06:11,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:06:53,508 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:06:53,509 INFO L272 AbstractInterpreter]: Visited 101 different actions 166 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 23:06:53,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:06:53,546 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:07:00,792 INFO L232 lantSequenceWeakener]: Weakened 50 states. On average, predicates are now at 80.13% of their original sizes. [2018-10-23 23:07:00,793 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:08:00,307 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:08:00,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:08:00,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-23 23:08:00,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:00,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 23:08:00,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 23:08:00,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-10-23 23:08:00,310 INFO L87 Difference]: Start difference. First operand 1886 states and 2743 transitions. Second operand 22 states. [2018-10-23 23:09:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:09:56,413 INFO L93 Difference]: Finished difference Result 4499 states and 6577 transitions. [2018-10-23 23:09:56,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:09:56,413 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 135 [2018-10-23 23:09:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:09:56,430 INFO L225 Difference]: With dead ends: 4499 [2018-10-23 23:09:56,431 INFO L226 Difference]: Without dead ends: 2619 [2018-10-23 23:09:56,440 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 64.8s TimeCoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-10-23 23:09:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2018-10-23 23:09:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2612. [2018-10-23 23:09:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2018-10-23 23:09:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3536 transitions. [2018-10-23 23:09:56,547 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3536 transitions. Word has length 135 [2018-10-23 23:09:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:09:56,548 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 3536 transitions. [2018-10-23 23:09:56,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-23 23:09:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3536 transitions. [2018-10-23 23:09:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-23 23:09:56,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:09:56,556 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:09:56,557 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:09:56,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:09:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1860554576, now seen corresponding path program 1 times [2018-10-23 23:09:56,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:09:56,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:09:56,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:09:56,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:09:56,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:09:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:09:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 23:09:56,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:09:56,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:09:56,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 149 with the following transitions: [2018-10-23 23:09:56,817 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [73], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:09:56,823 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:09:56,824 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 23:10:08,222 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 23:10:08,223 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 23:10:08,224 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 23:10:08,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:10:08,224 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:10:08,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:10:08,242 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 23:10:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:10:08,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 23:10:08,413 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 23:10:08,614 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:10:08,614 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:10:08,620 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:10:08,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:10:08 BoogieIcfgContainer [2018-10-23 23:10:08,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:10:08,622 INFO L168 Benchmark]: Toolchain (without parser) took 250906.25 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 1.5 GB in the end (delta: -45.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-23 23:10:08,623 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:10:08,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:10:08,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:10:08,626 INFO L168 Benchmark]: Boogie Preprocessor took 77.44 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:10:08,627 INFO L168 Benchmark]: RCFGBuilder took 3066.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.9 MB). Peak memory consumption was 104.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:10:08,629 INFO L168 Benchmark]: TraceAbstraction took 246811.28 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 599.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 23:10:08,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 203.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.44 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3066.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.9 MB). Peak memory consumption was 104.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246811.28 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 599.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 446]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 446). Cancelled while BasicCegarLoop was analyzing trace of length 149 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 246.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 122.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 679 SDtfs, 2580 SDslu, 724 SDs, 0 SdLazy, 4783 SolverSat, 843 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 65.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2612occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 53.9s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9933953923760986 AbsIntWeakeningRatio, 0.26119402985074625 AbsIntAvgWeakeningVarsNumRemoved, 205.2089552238806 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 32 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 559 ConstructedInterpolants, 0 QuantifiedInterpolants, 164053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 74/76 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown