java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem15_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:23:58,947 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:23:58,949 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:23:58,961 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:23:58,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:23:58,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:23:58,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:23:58,966 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:23:58,968 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:23:58,969 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:23:58,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:23:58,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:23:58,972 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:23:58,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:23:58,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:23:58,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:23:58,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:23:58,979 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:23:58,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:23:58,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:23:58,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:23:58,997 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:23:59,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:23:59,017 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:23:59,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:23:59,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:23:59,052 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:23:59,052 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:23:59,053 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:23:59,053 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:23:59,053 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:23:59,053 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:23:59,053 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:23:59,054 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:23:59,054 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:23:59,054 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:23:59,055 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:23:59,055 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:23:59,056 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:23:59,056 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:23:59,056 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:23:59,056 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:23:59,056 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:23:59,056 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:23:59,057 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:23:59,057 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:23:59,057 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:23:59,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:23:59,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:23:59,059 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:23:59,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:23:59,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:23:59,060 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:23:59,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:23:59,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:23:59,060 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:23:59,061 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:23:59,062 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:23:59,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:23:59,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:23:59,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:23:59,141 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:23:59,142 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:23:59,143 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03_false-unreach-call.c [2018-11-07 00:23:59,223 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c37b350/2b1d6d40de814afa966faac715adabda/FLAG935e3dbd6 [2018-11-07 00:23:59,878 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:23:59,879 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label03_false-unreach-call.c [2018-11-07 00:23:59,902 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c37b350/2b1d6d40de814afa966faac715adabda/FLAG935e3dbd6 [2018-11-07 00:23:59,923 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c37b350/2b1d6d40de814afa966faac715adabda [2018-11-07 00:23:59,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:23:59,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:23:59,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:23:59,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:23:59,940 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:23:59,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:59" (1/1) ... [2018-11-07 00:23:59,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd4ad97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:59, skipping insertion in model container [2018-11-07 00:23:59,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:59" (1/1) ... [2018-11-07 00:23:59,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:24:00,045 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:24:00,955 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:24:00,960 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:24:01,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:24:01,316 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:24:01,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01 WrapperNode [2018-11-07 00:24:01,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:24:01,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:24:01,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:24:01,318 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:24:01,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:24:01,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:24:01,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:24:01,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:24:01,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... [2018-11-07 00:24:01,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:24:01,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:24:01,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:24:01,719 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:24:01,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 00:24:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:24:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:24:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:24:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:24:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:24:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:24:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:24:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:24:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:24:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:24:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:24:08,617 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:24:08,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:08 BoogieIcfgContainer [2018-11-07 00:24:08,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:24:08,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:24:08,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:24:08,624 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:24:08,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:23:59" (1/3) ... [2018-11-07 00:24:08,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785cc86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:08, skipping insertion in model container [2018-11-07 00:24:08,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:01" (2/3) ... [2018-11-07 00:24:08,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785cc86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:08, skipping insertion in model container [2018-11-07 00:24:08,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:08" (3/3) ... [2018-11-07 00:24:08,628 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label03_false-unreach-call.c [2018-11-07 00:24:08,639 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:24:08,648 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:24:08,667 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:24:08,710 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:24:08,710 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:24:08,710 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:24:08,710 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:24:08,710 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:24:08,711 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:24:08,711 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:24:08,711 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:24:08,744 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 00:24:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 00:24:08,752 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:24:08,754 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] [2018-11-07 00:24:08,756 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:24:08,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash 569679620, now seen corresponding path program 1 times [2018-11-07 00:24:08,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:24:08,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:08,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:24:08,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:08,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:24:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:24:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:24:09,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:24:09,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:24:09,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:24:09,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:24:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:24:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:24:09,235 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 00:24:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:24:15,508 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 00:24:15,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:24:15,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-07 00:24:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:24:15,540 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 00:24:15,541 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 00:24:15,553 INFO L604 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 [2018-11-07 00:24:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 00:24:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 00:24:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 00:24:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 00:24:15,699 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 30 [2018-11-07 00:24:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:24:15,699 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 00:24:15,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:24:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 00:24:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 00:24:15,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:24:15,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:24:15,710 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:24:15,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1416535921, now seen corresponding path program 1 times [2018-11-07 00:24:15,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:24:15,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:15,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:24:15,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:15,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:24:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:24:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:24:16,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:24:16,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:24:16,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:24:16,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:24:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:24:16,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:24:16,019 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 00:24:21,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:24:21,336 INFO L93 Difference]: Finished difference Result 2760 states and 5146 transitions. [2018-11-07 00:24:21,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:24:21,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-11-07 00:24:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:24:21,358 INFO L225 Difference]: With dead ends: 2760 [2018-11-07 00:24:21,359 INFO L226 Difference]: Without dead ends: 2007 [2018-11-07 00:24:21,368 INFO L604 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 [2018-11-07 00:24:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2018-11-07 00:24:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2002. [2018-11-07 00:24:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2018-11-07 00:24:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3249 transitions. [2018-11-07 00:24:21,464 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3249 transitions. Word has length 100 [2018-11-07 00:24:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:24:21,465 INFO L480 AbstractCegarLoop]: Abstraction has 2002 states and 3249 transitions. [2018-11-07 00:24:21,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:24:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3249 transitions. [2018-11-07 00:24:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 00:24:21,486 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:24:21,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:24:21,487 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:24:21,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1314802227, now seen corresponding path program 1 times [2018-11-07 00:24:21,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:24:21,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:21,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:24:21,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:21,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:24:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:24:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:24:21,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:24:21,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:24:21,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:24:21,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:24:21,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:24:21,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:24:21,849 INFO L87 Difference]: Start difference. First operand 2002 states and 3249 transitions. Second operand 5 states. [2018-11-07 00:24:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:24:30,676 INFO L93 Difference]: Finished difference Result 6848 states and 11358 transitions. [2018-11-07 00:24:30,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:24:30,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2018-11-07 00:24:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:24:30,717 INFO L225 Difference]: With dead ends: 6848 [2018-11-07 00:24:30,717 INFO L226 Difference]: Without dead ends: 4852 [2018-11-07 00:24:30,739 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:24:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2018-11-07 00:24:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4806. [2018-11-07 00:24:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2018-11-07 00:24:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7207 transitions. [2018-11-07 00:24:30,929 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7207 transitions. Word has length 181 [2018-11-07 00:24:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:24:30,930 INFO L480 AbstractCegarLoop]: Abstraction has 4806 states and 7207 transitions. [2018-11-07 00:24:30,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:24:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7207 transitions. [2018-11-07 00:24:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 00:24:30,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:24:30,947 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:24:30,947 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:24:30,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2121552729, now seen corresponding path program 1 times [2018-11-07 00:24:30,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:24:30,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:30,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:24:30,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:24:30,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:24:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:24:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 46 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:24:31,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:24:31,312 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:24:31,312 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-07 00:24:31,315 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:24:31,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:24:31,386 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:24:32,967 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:24:33,806 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:24:33,808 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:24:33,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:24:33,819 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:24:35,657 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 77.65% of their original sizes. [2018-11-07 00:24:35,658 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:24:36,060 INFO L415 sIntCurrentIteration]: We unified 204 AI predicates to 204 [2018-11-07 00:24:36,060 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:24:36,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:24:36,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:24:36,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:24:36,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:24:36,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:24:36,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:24:36,063 INFO L87 Difference]: Start difference. First operand 4806 states and 7207 transitions. Second operand 7 states. [2018-11-07 00:25:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:11,782 INFO L93 Difference]: Finished difference Result 9916 states and 14775 transitions. [2018-11-07 00:25:11,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:25:11,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2018-11-07 00:25:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:11,814 INFO L225 Difference]: With dead ends: 9916 [2018-11-07 00:25:11,815 INFO L226 Difference]: Without dead ends: 5116 [2018-11-07 00:25:11,839 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:25:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2018-11-07 00:25:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2018-11-07 00:25:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5114 states. [2018-11-07 00:25:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7524 transitions. [2018-11-07 00:25:11,997 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7524 transitions. Word has length 205 [2018-11-07 00:25:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:11,997 INFO L480 AbstractCegarLoop]: Abstraction has 5114 states and 7524 transitions. [2018-11-07 00:25:11,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:25:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7524 transitions. [2018-11-07 00:25:12,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-07 00:25:12,012 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:12,012 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:12,013 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:12,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1101083330, now seen corresponding path program 1 times [2018-11-07 00:25:12,014 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:12,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:12,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:12,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:12,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 75 proven. 242 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 00:25:12,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:25:12,556 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:25:12,557 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-11-07 00:25:12,557 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 00:25:12,567 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:25:12,567 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:25:13,381 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:25:19,414 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:25:19,415 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:25:19,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:19,426 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:25:21,970 INFO L227 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 78.32% of their original sizes. [2018-11-07 00:25:21,970 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:26:49,734 INFO L415 sIntCurrentIteration]: We unified 300 AI predicates to 300 [2018-11-07 00:26:49,734 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:26:49,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:26:49,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 00:26:49,735 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:26:49,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 00:26:49,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 00:26:49,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 00:26:49,736 INFO L87 Difference]: Start difference. First operand 5114 states and 7524 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 00:27:56,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 00:27:56,256 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:27:56,264 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:27:56,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:27:56 BoogieIcfgContainer [2018-11-07 00:27:56,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:27:56,265 INFO L168 Benchmark]: Toolchain (without parser) took 236331.66 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -790.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 00:27:56,268 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 00:27:56,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1382.09 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:27:56,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.09 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:27:56,270 INFO L168 Benchmark]: Boogie Preprocessor took 172.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:27:56,271 INFO L168 Benchmark]: RCFGBuilder took 6901.07 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 303.1 MB). Peak memory consumption was 303.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:27:56,272 INFO L168 Benchmark]: TraceAbstraction took 227644.10 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -357.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:27:56,277 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1382.09 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.09 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6901.07 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 303.1 MB). Peak memory consumption was 303.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227644.10 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -357.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (5114states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (336 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 227.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 122.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1025 SDtfs, 4868 SDslu, 703 SDs, 0 SdLazy, 8073 SolverSat, 1737 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 535 GetRequests, 375 SyntacticMatches, 118 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 92.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5114occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951511099608924 AbsIntWeakeningRatio, 0.11507936507936507 AbsIntAvgWeakeningVarsNumRemoved, 623.6428571428571 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 408 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 812 ConstructedInterpolants, 0 QuantifiedInterpolants, 623356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 183/504 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown