java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:24:06,868 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:24:06,870 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:24:06,882 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:24:06,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:24:06,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:24:06,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:24:06,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:24:06,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:24:06,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:24:06,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:24:06,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:24:06,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:24:06,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:24:06,893 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:24:06,894 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:24:06,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:24:06,897 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:24:06,899 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:24:06,900 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:24:06,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:24:06,903 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:24:06,905 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:24:06,914 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 21:24:06,936 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:24:06,937 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:24:06,938 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:24:06,938 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:24:06,938 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:24:06,938 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:24:06,938 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:24:06,939 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:24:06,939 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:24:06,939 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:24:06,940 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:24:06,940 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:24:06,940 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:24:06,941 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:24:06,942 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:24:06,942 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:24:06,942 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:24:06,942 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:24:06,942 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:24:06,942 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:24:06,943 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:24:06,943 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:24:06,943 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:24:06,943 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:24:06,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:24:06,944 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:24:06,945 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:24:06,945 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:24:06,945 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:24:06,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:24:06,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:24:06,946 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:24:06,946 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:24:06,946 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:24:07,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:24:07,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:24:07,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:24:07,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:24:07,026 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:24:07,026 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-10-24 21:24:07,097 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1463dab0/c9ad7e03b9c444bca86aad9f509ad196/FLAG5552af390 [2018-10-24 21:24:07,933 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:24:07,934 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-10-24 21:24:07,965 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1463dab0/c9ad7e03b9c444bca86aad9f509ad196/FLAG5552af390 [2018-10-24 21:24:07,981 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1463dab0/c9ad7e03b9c444bca86aad9f509ad196 [2018-10-24 21:24:07,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:24:07,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:24:07,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:24:07,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:24:08,003 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:24:08,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:24:07" (1/1) ... [2018-10-24 21:24:08,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:08, skipping insertion in model container [2018-10-24 21:24:08,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:24:07" (1/1) ... [2018-10-24 21:24:08,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:24:08,179 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:24:09,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:24:09,407 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:24:10,117 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:24:10,154 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:24:10,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10 WrapperNode [2018-10-24 21:24:10,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:24:10,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:24:10,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:24:10,157 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:24:10,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:24:10,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:24:10,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:24:10,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:24:10,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (1/1) ... [2018-10-24 21:24:10,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:24:10,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:24:10,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:24:10,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:24:10,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (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 21:24:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:24:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:24:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:24:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:24:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:24:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:24:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:24:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:24:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:24:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:24:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:24:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:24:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:24:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:24:21,685 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:24:21,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:24:21 BoogieIcfgContainer [2018-10-24 21:24:21,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:24:21,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:24:21,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:24:21,692 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:24:21,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:24:07" (1/3) ... [2018-10-24 21:24:21,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:24:21, skipping insertion in model container [2018-10-24 21:24:21,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:10" (2/3) ... [2018-10-24 21:24:21,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:24:21, skipping insertion in model container [2018-10-24 21:24:21,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:24:21" (3/3) ... [2018-10-24 21:24:21,696 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label43_true-unreach-call.c [2018-10-24 21:24:21,710 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:24:21,730 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:24:21,748 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:24:21,815 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:24:21,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:24:21,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:24:21,816 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:24:21,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:24:21,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:24:21,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:24:21,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:24:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:24:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-24 21:24:21,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:21,883 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] [2018-10-24 21:24:21,885 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:21,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -47298708, now seen corresponding path program 1 times [2018-10-24 21:24:21,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:21,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:21,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:21,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:22,543 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:24:22,653 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 21:24:22,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:22,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:24:22,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:22,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:24:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:24:22,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:24:22,688 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:24:30,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:24:30,556 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:24:30,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:24:30,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-24 21:24:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:24:30,617 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:24:30,617 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:24:30,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:24:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:24:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:24:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:24:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-10-24 21:24:30,810 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 48 [2018-10-24 21:24:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:24:30,810 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-10-24 21:24:30,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:24:30,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-10-24 21:24:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 21:24:30,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:30,824 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:24:30,825 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:30,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:30,825 INFO L82 PathProgramCache]: Analyzing trace with hash -19746802, now seen corresponding path program 1 times [2018-10-24 21:24:30,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:30,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:30,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:30,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:30,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:24:31,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:31,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:24:31,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:31,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:24:31,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:24:31,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:24:31,169 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-10-24 21:24:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:24:43,631 INFO L93 Difference]: Finished difference Result 6274 states and 11427 transitions. [2018-10-24 21:24:43,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:24:43,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-10-24 21:24:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:24:43,670 INFO L225 Difference]: With dead ends: 6274 [2018-10-24 21:24:43,671 INFO L226 Difference]: Without dead ends: 4676 [2018-10-24 21:24:43,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:24:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-10-24 21:24:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-10-24 21:24:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-10-24 21:24:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7992 transitions. [2018-10-24 21:24:43,817 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7992 transitions. Word has length 124 [2018-10-24 21:24:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:24:43,818 INFO L481 AbstractCegarLoop]: Abstraction has 4676 states and 7992 transitions. [2018-10-24 21:24:43,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:24:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7992 transitions. [2018-10-24 21:24:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 21:24:43,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:43,825 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:43,825 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:43,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:43,826 INFO L82 PathProgramCache]: Analyzing trace with hash 974293318, now seen corresponding path program 1 times [2018-10-24 21:24:43,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:43,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:43,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:43,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:43,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:24:44,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:44,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:24:44,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:44,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:24:44,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:24:44,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:24:44,085 INFO L87 Difference]: Start difference. First operand 4676 states and 7992 transitions. Second operand 5 states. [2018-10-24 21:24:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:24:56,089 INFO L93 Difference]: Finished difference Result 14214 states and 24823 transitions. [2018-10-24 21:24:56,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:24:56,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-10-24 21:24:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:24:56,154 INFO L225 Difference]: With dead ends: 14214 [2018-10-24 21:24:56,154 INFO L226 Difference]: Without dead ends: 9544 [2018-10-24 21:24:56,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:24:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2018-10-24 21:24:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9456. [2018-10-24 21:24:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9456 states. [2018-10-24 21:24:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 14962 transitions. [2018-10-24 21:24:56,472 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 14962 transitions. Word has length 128 [2018-10-24 21:24:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:24:56,472 INFO L481 AbstractCegarLoop]: Abstraction has 9456 states and 14962 transitions. [2018-10-24 21:24:56,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:24:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 14962 transitions. [2018-10-24 21:24:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 21:24:56,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:56,478 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:56,478 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:56,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash -506419933, now seen corresponding path program 1 times [2018-10-24 21:24:56,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:56,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:56,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:56,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:56,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:24:56,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:56,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:24:56,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:56,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:24:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:24:56,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:24:56,861 INFO L87 Difference]: Start difference. First operand 9456 states and 14962 transitions. Second operand 6 states. [2018-10-24 21:25:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:22,024 INFO L93 Difference]: Finished difference Result 37981 states and 65066 transitions. [2018-10-24 21:25:22,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:25:22,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 21:25:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:22,184 INFO L225 Difference]: With dead ends: 37981 [2018-10-24 21:25:22,185 INFO L226 Difference]: Without dead ends: 28531 [2018-10-24 21:25:22,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:25:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2018-10-24 21:25:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 28476. [2018-10-24 21:25:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28476 states. [2018-10-24 21:25:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28476 states to 28476 states and 44179 transitions. [2018-10-24 21:25:23,148 INFO L78 Accepts]: Start accepts. Automaton has 28476 states and 44179 transitions. Word has length 139 [2018-10-24 21:25:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:23,149 INFO L481 AbstractCegarLoop]: Abstraction has 28476 states and 44179 transitions. [2018-10-24 21:25:23,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:25:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 28476 states and 44179 transitions. [2018-10-24 21:25:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 21:25:23,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:23,165 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:23,165 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:23,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash 236165049, now seen corresponding path program 1 times [2018-10-24 21:25:23,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:23,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:23,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:23,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:23,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:23,489 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:25:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:25:23,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:25:23,936 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:25:23,937 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-10-24 21:25:23,942 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:25:24,043 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:25:24,044 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:25:27,501 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:25:28,082 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:25:28,086 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:25:28,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:28,195 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:25:30,633 INFO L232 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 75.58% of their original sizes. [2018-10-24 21:25:30,634 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:25:31,286 INFO L413 sIntCurrentIteration]: We have 236 unified AI predicates [2018-10-24 21:25:31,286 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:25:31,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:25:31,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 21:25:31,287 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:31,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:25:31,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:25:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:25:31,289 INFO L87 Difference]: Start difference. First operand 28476 states and 44179 transitions. Second operand 8 states. [2018-10-24 21:27:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:27:21,069 INFO L93 Difference]: Finished difference Result 57716 states and 89295 transitions. [2018-10-24 21:27:21,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:27:21,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2018-10-24 21:27:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:27:21,214 INFO L225 Difference]: With dead ends: 57716 [2018-10-24 21:27:21,215 INFO L226 Difference]: Without dead ends: 29246 [2018-10-24 21:27:21,308 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 238 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:27:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29246 states. [2018-10-24 21:27:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29246 to 29244. [2018-10-24 21:27:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29244 states. [2018-10-24 21:27:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29244 states to 29244 states and 44960 transitions. [2018-10-24 21:27:22,071 INFO L78 Accepts]: Start accepts. Automaton has 29244 states and 44960 transitions. Word has length 237 [2018-10-24 21:27:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:27:22,072 INFO L481 AbstractCegarLoop]: Abstraction has 29244 states and 44960 transitions. [2018-10-24 21:27:22,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:27:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 29244 states and 44960 transitions. [2018-10-24 21:27:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-24 21:27:22,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:27:22,089 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:27:22,090 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:27:22,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:27:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1854952083, now seen corresponding path program 1 times [2018-10-24 21:27:22,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:27:22,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:27:22,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:27:22,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:27:22,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:27:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:27:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:27:22,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:27:22,738 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:27:22,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-10-24 21:27:22,739 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2444], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:27:22,757 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:27:22,757 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:27:30,469 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:27:47,568 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 21:27:47,569 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 21:27:47,570 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 21:27:47,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:27:47,571 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 [2018-10-24 21:27:47,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:27:47,584 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:27:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:27:47,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:27:47,774 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 21:27:47,975 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:27:47,976 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:27:47,982 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:27:47,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:27:47 BoogieIcfgContainer [2018-10-24 21:27:47,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:27:47,984 INFO L168 Benchmark]: Toolchain (without parser) took 219989.19 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:27:47,985 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. [2018-10-24 21:27:47,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2157.32 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:47,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 535.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:47,988 INFO L168 Benchmark]: Boogie Preprocessor took 277.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:47,989 INFO L168 Benchmark]: RCFGBuilder took 10716.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 655.6 MB). Peak memory consumption was 655.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:47,989 INFO L168 Benchmark]: TraceAbstraction took 206294.62 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 531.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:48,003 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 2157.32 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 535.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 277.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10716.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 655.6 MB). Peak memory consumption was 655.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206294.62 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 531.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was analyzing trace of length 286 with TraceHistMax 3,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 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 206.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 168.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1672 SDtfs, 10596 SDslu, 693 SDs, 0 SdLazy, 20651 SolverSat, 3811 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 126.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 263 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29244occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.0s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9958930899608864 AbsIntWeakeningRatio, 0.11440677966101695 AbsIntAvgWeakeningVarsNumRemoved, 1049.207627118644 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 145 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 676 NumberOfCodeBlocks, 676 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 344707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 210/285 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown