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_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:20:48,884 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:20:48,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:20:48,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:20:48,899 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:20:48,900 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:20:48,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:20:48,903 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:20:48,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:20:48,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:20:48,906 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:20:48,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:20:48,908 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:20:48,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:20:48,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:20:48,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:20:48,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:20:48,914 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:20:48,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:20:48,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:20:48,919 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:20:48,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:20:48,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:20:48,929 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:20:48,929 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:20:48,930 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:20:48,931 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:20:48,932 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:20:48,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:20:48,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:20:48,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:20:48,949 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:20:48,949 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:20:48,949 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:20:48,949 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:20:48,950 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:20:48,950 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:20:48,950 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:20:48,950 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:20:48,950 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:20:48,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:20:48,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:20:48,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:20:48,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:20:48,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:20:48,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:20:48,952 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:20:48,953 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:20:48,953 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:20:48,953 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:20:48,953 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:20:48,953 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:20:48,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:20:48,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:20:48,954 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:20:48,954 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:20:48,954 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:20:48,955 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:20:48,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:20:48,955 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:20:48,955 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:20:48,955 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:20:49,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:20:49,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:20:49,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:20:49,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:20:49,037 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:20:49,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-10-24 18:20:49,105 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4f0f8122/cfff2066c0ce49b79f908af680ff4c30/FLAG858a907e2 [2018-10-24 18:20:50,001 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:20:50,002 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-10-24 18:20:50,040 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4f0f8122/cfff2066c0ce49b79f908af680ff4c30/FLAG858a907e2 [2018-10-24 18:20:50,062 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e4f0f8122/cfff2066c0ce49b79f908af680ff4c30 [2018-10-24 18:20:50,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:20:50,080 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:20:50,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:20:50,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:20:50,089 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:20:50,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:20:50" (1/1) ... [2018-10-24 18:20:50,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26998074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:50, skipping insertion in model container [2018-10-24 18:20:50,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:20:50" (1/1) ... [2018-10-24 18:20:50,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:20:50,273 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:20:51,673 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:20:51,678 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:20:52,333 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:20:52,373 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:20:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52 WrapperNode [2018-10-24 18:20:52,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:20:52,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:20:52,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:20:52,375 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:20:52,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:52,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:52,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:20:52,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:20:52,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:20:52,889 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:20:52,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:52,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:52,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:52,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:53,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:53,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:53,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... [2018-10-24 18:20:53,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:20:53,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:20:53,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:20:53,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:20:53,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:20:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:20:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:20:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:20:53,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:20:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:20:53,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:20:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:20:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:20:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:20:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:20:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:20:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:20:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:20:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:21:06,729 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:21:06,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:06 BoogieIcfgContainer [2018-10-24 18:21:06,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:21:06,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:21:06,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:21:06,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:21:06,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:20:50" (1/3) ... [2018-10-24 18:21:06,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646cf9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:06, skipping insertion in model container [2018-10-24 18:21:06,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:20:52" (2/3) ... [2018-10-24 18:21:06,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646cf9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:06, skipping insertion in model container [2018-10-24 18:21:06,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:06" (3/3) ... [2018-10-24 18:21:06,738 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48_false-unreach-call.c [2018-10-24 18:21:06,749 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:21:06,759 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:21:06,777 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:21:06,823 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:21:06,824 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:21:06,824 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:21:06,824 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:21:06,824 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:21:06,825 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:21:06,825 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:21:06,825 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:21:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 18:21:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 18:21:06,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:06,874 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:21:06,877 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:06,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:06,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2042668093, now seen corresponding path program 1 times [2018-10-24 18:21:06,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:06,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:06,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:06,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:06,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:07,289 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:21:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:07,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:07,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:21:07,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:07,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:21:07,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:21:07,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:21:07,421 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 18:21:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:15,605 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 18:21:15,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:21:15,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-24 18:21:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:15,647 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 18:21:15,647 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 18:21:15,659 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 18:21:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 18:21:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 18:21:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 18:21:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-24 18:21:15,853 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 17 [2018-10-24 18:21:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:15,854 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-24 18:21:15,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:21:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-24 18:21:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 18:21:15,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:15,863 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:21:15,864 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:15,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:15,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1495198716, now seen corresponding path program 1 times [2018-10-24 18:21:15,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:15,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:15,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:15,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:15,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:16,330 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:21:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:16,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:16,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:21:16,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:16,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:21:16,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:21:16,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:21:16,563 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-24 18:21:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:26,911 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-24 18:21:26,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:21:26,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-24 18:21:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:26,942 INFO L225 Difference]: With dead ends: 4818 [2018-10-24 18:21:26,942 INFO L226 Difference]: Without dead ends: 3220 [2018-10-24 18:21:26,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:21:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-24 18:21:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-24 18:21:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-24 18:21:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-24 18:21:27,059 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 91 [2018-10-24 18:21:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:27,059 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-24 18:21:27,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:21:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-24 18:21:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-24 18:21:27,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:27,063 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:21:27,064 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:27,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:27,064 INFO L82 PathProgramCache]: Analyzing trace with hash -853421323, now seen corresponding path program 1 times [2018-10-24 18:21:27,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:27,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:27,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:27,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:27,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:27,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:27,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:21:27,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:27,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:21:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:21:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:21:27,267 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 5 states. [2018-10-24 18:21:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:43,751 INFO L93 Difference]: Finished difference Result 11112 states and 19743 transitions. [2018-10-24 18:21:43,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 18:21:43,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-10-24 18:21:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:43,804 INFO L225 Difference]: With dead ends: 11112 [2018-10-24 18:21:43,804 INFO L226 Difference]: Without dead ends: 7932 [2018-10-24 18:21:43,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:21:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2018-10-24 18:21:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 7901. [2018-10-24 18:21:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7901 states. [2018-10-24 18:21:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11699 transitions. [2018-10-24 18:21:44,037 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11699 transitions. Word has length 96 [2018-10-24 18:21:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:44,038 INFO L481 AbstractCegarLoop]: Abstraction has 7901 states and 11699 transitions. [2018-10-24 18:21:44,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:21:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11699 transitions. [2018-10-24 18:21:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 18:21:44,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:44,040 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:21:44,041 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:44,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1678016379, now seen corresponding path program 1 times [2018-10-24 18:21:44,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:44,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:44,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:44,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:44,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:44,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:44,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:21:44,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:44,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:21:44,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:21:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:21:44,268 INFO L87 Difference]: Start difference. First operand 7901 states and 11699 transitions. Second operand 6 states. [2018-10-24 18:21:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:55,492 INFO L93 Difference]: Finished difference Result 23605 states and 35456 transitions. [2018-10-24 18:21:55,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:21:55,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 18:21:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:55,576 INFO L225 Difference]: With dead ends: 23605 [2018-10-24 18:21:55,576 INFO L226 Difference]: Without dead ends: 15710 [2018-10-24 18:21:55,613 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 [2018-10-24 18:21:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15710 states. [2018-10-24 18:21:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15710 to 15631. [2018-10-24 18:21:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15631 states. [2018-10-24 18:21:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15631 states to 15631 states and 21020 transitions. [2018-10-24 18:21:56,012 INFO L78 Accepts]: Start accepts. Automaton has 15631 states and 21020 transitions. Word has length 104 [2018-10-24 18:21:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:56,013 INFO L481 AbstractCegarLoop]: Abstraction has 15631 states and 21020 transitions. [2018-10-24 18:21:56,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:21:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 15631 states and 21020 transitions. [2018-10-24 18:21:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 18:21:56,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:56,024 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:21:56,025 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:56,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:56,025 INFO L82 PathProgramCache]: Analyzing trace with hash 306160881, now seen corresponding path program 1 times [2018-10-24 18:21:56,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:56,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:56,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:56,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:56,027 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:56,379 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:21:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:56,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:56,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:21:56,763 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:56,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:21:56,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:21:56,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:21:56,766 INFO L87 Difference]: Start difference. First operand 15631 states and 21020 transitions. Second operand 6 states. [2018-10-24 18:22:04,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:04,522 INFO L93 Difference]: Finished difference Result 34644 states and 47725 transitions. [2018-10-24 18:22:04,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:04,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 18:22:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:04,601 INFO L225 Difference]: With dead ends: 34644 [2018-10-24 18:22:04,601 INFO L226 Difference]: Without dead ends: 19019 [2018-10-24 18:22:04,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:22:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19019 states. [2018-10-24 18:22:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19019 to 18949. [2018-10-24 18:22:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18949 states. [2018-10-24 18:22:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18949 states to 18949 states and 24406 transitions. [2018-10-24 18:22:05,022 INFO L78 Accepts]: Start accepts. Automaton has 18949 states and 24406 transitions. Word has length 142 [2018-10-24 18:22:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:05,022 INFO L481 AbstractCegarLoop]: Abstraction has 18949 states and 24406 transitions. [2018-10-24 18:22:05,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 18949 states and 24406 transitions. [2018-10-24 18:22:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 18:22:05,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:05,030 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:05,030 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:05,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:05,030 INFO L82 PathProgramCache]: Analyzing trace with hash 59420808, now seen corresponding path program 1 times [2018-10-24 18:22:05,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:05,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:05,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:05,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:05,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:22:05,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:22:05,665 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:22:05,666 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-24 18:22:05,668 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1903], [1905], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [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], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2428], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 18:22:05,764 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:22:05,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:22:12,230 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:22:12,232 INFO L272 AbstractInterpreter]: Visited 96 different actions 184 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 18:22:12,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:12,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:22:12,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:22:12,256 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 18:22:12,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:12,268 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:22:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:12,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:22:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:22:12,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:22:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:22:13,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 18:22:13,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-10-24 18:22:13,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:13,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:22:13,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:22:13,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:22:13,446 INFO L87 Difference]: Start difference. First operand 18949 states and 24406 transitions. Second operand 5 states. [2018-10-24 18:22:23,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:23,897 INFO L93 Difference]: Finished difference Result 49184 states and 65844 transitions. [2018-10-24 18:22:23,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 18:22:23,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2018-10-24 18:22:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:24,051 INFO L225 Difference]: With dead ends: 49184 [2018-10-24 18:22:24,052 INFO L226 Difference]: Without dead ends: 30241 [2018-10-24 18:22:24,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 358 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:22:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30241 states. [2018-10-24 18:22:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30241 to 28802. [2018-10-24 18:22:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28802 states. [2018-10-24 18:22:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28802 states to 28802 states and 36810 transitions. [2018-10-24 18:22:24,955 INFO L78 Accepts]: Start accepts. Automaton has 28802 states and 36810 transitions. Word has length 180 [2018-10-24 18:22:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:24,956 INFO L481 AbstractCegarLoop]: Abstraction has 28802 states and 36810 transitions. [2018-10-24 18:22:24,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:22:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 28802 states and 36810 transitions. [2018-10-24 18:22:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 18:22:24,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:24,961 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:22:24,961 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:24,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:24,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1084281443, now seen corresponding path program 1 times [2018-10-24 18:22:24,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:24,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:24,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:24,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:24,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:25,260 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:22:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:22:25,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:22:25,690 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:22:25,690 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-10-24 18:22:25,690 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1903], [1905], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [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], [2428], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2492], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 18:22:25,704 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:22:25,704 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:22:29,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:22:29,571 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:22:29,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:29,614 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:22:31,736 INFO L232 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 75.02% of their original sizes. [2018-10-24 18:22:31,736 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:22:32,216 INFO L413 sIntCurrentIteration]: We have 206 unified AI predicates [2018-10-24 18:22:32,217 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:22:32,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:22:32,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 18:22:32,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:32,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:22:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:22:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:22:32,219 INFO L87 Difference]: Start difference. First operand 28802 states and 36810 transitions. Second operand 8 states. [2018-10-24 18:22:39,981 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:24:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:24:18,114 INFO L93 Difference]: Finished difference Result 58368 states and 74466 transitions. [2018-10-24 18:24:18,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:24:18,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2018-10-24 18:24:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:24:18,200 INFO L225 Difference]: With dead ends: 58368 [2018-10-24 18:24:18,200 INFO L226 Difference]: Without dead ends: 29572 [2018-10-24 18:24:18,240 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:24:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29572 states. [2018-10-24 18:24:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29572 to 29570. [2018-10-24 18:24:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29570 states. [2018-10-24 18:24:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29570 states to 29570 states and 37588 transitions. [2018-10-24 18:24:18,749 INFO L78 Accepts]: Start accepts. Automaton has 29570 states and 37588 transitions. Word has length 207 [2018-10-24 18:24:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:24:18,749 INFO L481 AbstractCegarLoop]: Abstraction has 29570 states and 37588 transitions. [2018-10-24 18:24:18,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 18:24:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 29570 states and 37588 transitions. [2018-10-24 18:24:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 18:24:18,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:24:18,757 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:24:18,758 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:24:18,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:24:18,758 INFO L82 PathProgramCache]: Analyzing trace with hash 251843425, now seen corresponding path program 1 times [2018-10-24 18:24:18,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:24:18,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:24:18,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:24:18,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:24:18,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:24:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:24:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-24 18:24:18,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:24:18,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:24:18,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:24:18,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:24:18,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:24:18,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:24:18,981 INFO L87 Difference]: Start difference. First operand 29570 states and 37588 transitions. Second operand 3 states. Received shutdown request... [2018-10-24 18:24:21,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:24:21,535 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:24:21,540 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:24:21,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:24:21 BoogieIcfgContainer [2018-10-24 18:24:21,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:24:21,541 INFO L168 Benchmark]: Toolchain (without parser) took 211463.69 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 1.3 GB in the end (delta: 111.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 18:24:21,543 INFO L168 Benchmark]: CDTParser took 0.21 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 18:24:21,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2293.43 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 18:24:21,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 512.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 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 18:24:21,545 INFO L168 Benchmark]: Boogie Preprocessor took 264.89 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: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:24:21,546 INFO L168 Benchmark]: RCFGBuilder took 13576.67 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -179.3 MB). Peak memory consumption was 670.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:24:21,547 INFO L168 Benchmark]: TraceAbstraction took 194809.48 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 18:24:21,552 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2293.43 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 512.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 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 264.89 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: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13576.67 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -179.3 MB). Peak memory consumption was 670.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 194809.48 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (29570states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (10399 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 194.7s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2286 SDtfs, 17111 SDslu, 1033 SDs, 0 SdLazy, 29165 SolverSat, 7377 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 124.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 622 GetRequests, 572 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29570occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9952949962658699 AbsIntWeakeningRatio, 0.13106796116504854 AbsIntAvgWeakeningVarsNumRemoved, 1038.6407766990292 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 1655 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1284 NumberOfCodeBlocks, 1284 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1454 ConstructedInterpolants, 0 QuantifiedInterpolants, 915725 SizeOfPredicates, 1 NumberOfNonLiveVariables, 393 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 406/559 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown