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/Problem18_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:00:38,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:00:38,694 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:00:38,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:00:38,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:00:38,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:00:38,716 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:00:38,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:00:38,721 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:00:38,722 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:00:38,724 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:00:38,725 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:00:38,726 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:00:38,727 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:00:38,728 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:00:38,729 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:00:38,737 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:00:38,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:00:38,746 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:00:38,749 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:00:38,750 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:00:38,751 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:00:38,756 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:00:38,771 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 19:00:38,800 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:00:38,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:00:38,801 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:00:38,802 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:00:38,802 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:00:38,802 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:00:38,802 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:00:38,803 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:00:38,803 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:00:38,803 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:00:38,803 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:00:38,803 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:00:38,804 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:00:38,804 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:00:38,804 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:00:38,805 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:00:38,805 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:00:38,805 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:00:38,805 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:00:38,805 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:00:38,806 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:00:38,806 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:00:38,806 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:00:38,806 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:00:38,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:00:38,807 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:00:38,807 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:00:38,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:00:38,807 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:00:38,807 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:00:38,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:00:38,808 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:00:38,808 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:00:38,808 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:00:38,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:00:38,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:00:38,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:00:38,878 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:00:38,878 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:00:38,879 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label32_false-unreach-call.c [2018-10-24 19:00:38,960 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/adcf490a5/2e3ba25902794c5bb14ea8fc80baa7e5/FLAGc9c4c720f [2018-10-24 19:00:39,761 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:00:39,763 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label32_false-unreach-call.c [2018-10-24 19:00:39,792 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/adcf490a5/2e3ba25902794c5bb14ea8fc80baa7e5/FLAGc9c4c720f [2018-10-24 19:00:39,812 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/adcf490a5/2e3ba25902794c5bb14ea8fc80baa7e5 [2018-10-24 19:00:39,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:00:39,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:00:39,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:00:39,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:00:39,837 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:00:39,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39, skipping insertion in model container [2018-10-24 19:00:39,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:00:39,991 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:00:40,969 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:00:40,976 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:00:41,425 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:00:41,456 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:00:41,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41 WrapperNode [2018-10-24 19:00:41,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:00:41,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:00:41,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:00:41,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:00:41,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:41,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:41,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:00:41,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:00:41,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:00:41,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:00:41,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:41,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:41,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:41,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:41,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:42,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:42,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (1/1) ... [2018-10-24 19:00:42,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:00:42,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:00:42,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:00:42,112 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:00:42,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (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 19:00:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:00:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:00:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:00:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:00:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:00:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:00:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:00:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:00:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:00:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:00:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:00:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:00:51,246 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:00:51,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:00:51 BoogieIcfgContainer [2018-10-24 19:00:51,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:00:51,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:00:51,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:00:51,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:00:51,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:00:39" (1/3) ... [2018-10-24 19:00:51,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840258f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:00:51, skipping insertion in model container [2018-10-24 19:00:51,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:41" (2/3) ... [2018-10-24 19:00:51,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840258f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:00:51, skipping insertion in model container [2018-10-24 19:00:51,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:00:51" (3/3) ... [2018-10-24 19:00:51,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label32_false-unreach-call.c [2018-10-24 19:00:51,268 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:00:51,278 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:00:51,296 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:00:51,354 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:00:51,354 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:00:51,354 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:00:51,354 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:00:51,354 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:00:51,355 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:00:51,355 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:00:51,355 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:00:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 19:00:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 19:00:51,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:51,423 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] [2018-10-24 19:00:51,428 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:51,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:51,435 INFO L82 PathProgramCache]: Analyzing trace with hash 101838135, now seen corresponding path program 1 times [2018-10-24 19:00:51,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:51,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:51,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:51,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:51,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:51,825 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 19:00:51,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:00:51,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:00:51,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:51,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:00:51,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:00:51,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:00:51,856 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 19:01:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:03,460 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 19:01:03,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:01:03,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-24 19:01:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:03,503 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 19:01:03,504 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 19:01:03,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:01:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 19:01:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-24 19:01:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-24 19:01:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-10-24 19:01:03,690 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 35 [2018-10-24 19:01:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:03,691 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-10-24 19:01:03,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:01:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-10-24 19:01:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 19:01:03,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:03,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:03,699 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:03,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:03,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1911070856, now seen corresponding path program 1 times [2018-10-24 19:01:03,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:03,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:03,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:03,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:03,701 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:04,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:04,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:01:04,031 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:04,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:01:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:01:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:01:04,033 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-10-24 19:01:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:12,750 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-10-24 19:01:12,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:12,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-10-24 19:01:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:12,794 INFO L225 Difference]: With dead ends: 6600 [2018-10-24 19:01:12,795 INFO L226 Difference]: Without dead ends: 4413 [2018-10-24 19:01:12,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:01:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-24 19:01:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-24 19:01:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-24 19:01:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-10-24 19:01:12,988 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 105 [2018-10-24 19:01:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:12,989 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-10-24 19:01:12,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:01:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-10-24 19:01:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 19:01:13,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:13,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:13,003 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:13,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:13,003 INFO L82 PathProgramCache]: Analyzing trace with hash 769572929, now seen corresponding path program 1 times [2018-10-24 19:01:13,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:13,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:13,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:13,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:13,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:13,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:13,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:01:13,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:13,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:01:13,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:01:13,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:01:13,368 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-10-24 19:01:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:18,906 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-10-24 19:01:18,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:18,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-24 19:01:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:18,944 INFO L225 Difference]: With dead ends: 11002 [2018-10-24 19:01:18,945 INFO L226 Difference]: Without dead ends: 6630 [2018-10-24 19:01:18,961 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 19:01:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-24 19:01:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-24 19:01:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-24 19:01:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-10-24 19:01:19,130 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 132 [2018-10-24 19:01:19,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:19,131 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-10-24 19:01:19,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:01:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-10-24 19:01:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 19:01:19,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:19,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:19,133 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:19,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:19,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1248929717, now seen corresponding path program 1 times [2018-10-24 19:01:19,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:19,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:19,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:19,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:19,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:19,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:19,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:01:19,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:19,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:01:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:01:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:01:19,394 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-10-24 19:01:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:26,874 INFO L93 Difference]: Finished difference Result 25999 states and 35669 transitions. [2018-10-24 19:01:26,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:01:26,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-24 19:01:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:26,960 INFO L225 Difference]: With dead ends: 25999 [2018-10-24 19:01:26,960 INFO L226 Difference]: Without dead ends: 19415 [2018-10-24 19:01:26,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:01:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2018-10-24 19:01:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 19415. [2018-10-24 19:01:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19415 states. [2018-10-24 19:01:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19415 states to 19415 states and 24673 transitions. [2018-10-24 19:01:27,466 INFO L78 Accepts]: Start accepts. Automaton has 19415 states and 24673 transitions. Word has length 142 [2018-10-24 19:01:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:27,468 INFO L481 AbstractCegarLoop]: Abstraction has 19415 states and 24673 transitions. [2018-10-24 19:01:27,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:01:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 19415 states and 24673 transitions. [2018-10-24 19:01:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-24 19:01:27,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:27,485 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:27,485 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:27,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:27,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1598854693, now seen corresponding path program 1 times [2018-10-24 19:01:27,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:27,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:27,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:27,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:27,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:28,329 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 19:01:28,619 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-10-24 19:01:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:29,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:01:29,694 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:01:29,695 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-10-24 19:01:29,698 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1803], [1805], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [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], [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], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:01:29,789 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:01:29,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:01:35,613 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:01:35,741 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:01:35,742 INFO L272 AbstractInterpreter]: Visited 229 different actions 229 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 19:01:35,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:35,804 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:01:38,893 INFO L232 lantSequenceWeakener]: Weakened 349 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-24 19:01:38,894 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:01:39,511 INFO L413 sIntCurrentIteration]: We have 356 unified AI predicates [2018-10-24 19:01:39,511 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:01:39,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:01:39,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2018-10-24 19:01:39,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:39,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 19:01:39,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 19:01:39,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:01:39,514 INFO L87 Difference]: Start difference. First operand 19415 states and 24673 transitions. Second operand 8 states. [2018-10-24 19:03:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:03:03,811 INFO L93 Difference]: Finished difference Result 39529 states and 50077 transitions. [2018-10-24 19:03:03,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:03:03,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 357 [2018-10-24 19:03:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:03:03,872 INFO L225 Difference]: With dead ends: 39529 [2018-10-24 19:03:03,872 INFO L226 Difference]: Without dead ends: 20120 [2018-10-24 19:03:03,922 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 358 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 19:03:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20120 states. [2018-10-24 19:03:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20120 to 20118. [2018-10-24 19:03:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20118 states. [2018-10-24 19:03:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20118 states to 20118 states and 25388 transitions. [2018-10-24 19:03:04,309 INFO L78 Accepts]: Start accepts. Automaton has 20118 states and 25388 transitions. Word has length 357 [2018-10-24 19:03:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:03:04,310 INFO L481 AbstractCegarLoop]: Abstraction has 20118 states and 25388 transitions. [2018-10-24 19:03:04,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 19:03:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 20118 states and 25388 transitions. [2018-10-24 19:03:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-10-24 19:03:04,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:03:04,322 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 19:03:04,323 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:03:04,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:03:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash -772566022, now seen corresponding path program 1 times [2018-10-24 19:03:04,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:03:04,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:03:04,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:03:04,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:03:04,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:03:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:03:04,887 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:03:05,088 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:03:05,326 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:03:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 110 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:03:06,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:03:06,026 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:03:06,026 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-10-24 19:03:06,027 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1803], [1805], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [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], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:03:06,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:03:06,036 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:03:13,735 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:03:19,881 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:03:19,881 INFO L272 AbstractInterpreter]: Visited 232 different actions 458 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 19:03:19,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:03:19,890 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:03:23,293 INFO L232 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 78.63% of their original sizes. [2018-10-24 19:03:23,294 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:03:57,571 INFO L413 sIntCurrentIteration]: We have 445 unified AI predicates [2018-10-24 19:03:57,572 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:03:57,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:03:57,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2018-10-24 19:03:57,573 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:03:57,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:03:57,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:03:57,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:03:57,575 INFO L87 Difference]: Start difference. First operand 20118 states and 25388 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 19:04:27,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:04:27,848 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:04:27,853 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:04:27,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:04:27 BoogieIcfgContainer [2018-10-24 19:04:27,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:04:27,855 INFO L168 Benchmark]: Toolchain (without parser) took 228028.49 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 440.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:27,856 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:04:27,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1628.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:27,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 389.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:27,859 INFO L168 Benchmark]: Boogie Preprocessor took 264.16 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:27,860 INFO L168 Benchmark]: RCFGBuilder took 9136.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 506.9 MB). Peak memory consumption was 506.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:27,860 INFO L168 Benchmark]: TraceAbstraction took 216604.40 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:04:27,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1628.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 389.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 264.16 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9136.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 506.9 MB). Peak memory consumption was 506.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216604.40 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 93). Cancelled while BasicCegarLoop was constructing difference of abstraction (20118states) and FLOYD_HOARE automaton (currently 9 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (188 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 148.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1818 SDtfs, 9933 SDslu, 806 SDs, 0 SdLazy, 17914 SolverSat, 5258 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 837 GetRequests, 726 SyntacticMatches, 70 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 34.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20118occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9972679078687872 AbsIntWeakeningRatio, 0.06491885143570537 AbsIntAvgWeakeningVarsNumRemoved, 784.1148564294632 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1217 NumberOfCodeBlocks, 1217 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1211 ConstructedInterpolants, 0 QuantifiedInterpolants, 4702378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 346/481 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown