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/Problem17_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:40:28,952 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:40:28,954 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:40:28,966 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:40:28,967 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:40:28,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:40:28,970 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:40:28,974 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:40:28,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:40:28,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:40:28,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:40:28,981 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:40:28,982 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:40:28,983 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:40:28,985 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:40:28,985 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:40:28,986 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:40:28,988 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:40:28,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:40:28,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:40:28,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:40:28,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:40:28,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:40:29,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:40:29,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:40:29,005 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:40:29,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:40:29,006 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 00:40:29,022 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:40:29,025 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:40:29,026 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:40:29,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:40:29,027 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:40:29,027 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:40:29,027 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:40:29,027 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:40:29,028 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:40:29,028 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:40:29,028 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:40:29,028 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:40:29,030 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:40:29,030 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:40:29,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:40:29,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:40:29,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:40:29,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:40:29,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:40:29,032 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:40:29,032 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:40:29,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:40:29,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:40:29,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:40:29,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:40:29,033 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:40:29,033 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:40:29,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:40:29,034 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:40:29,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:40:29,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:40:29,035 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:40:29,035 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:40:29,035 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:40:29,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:40:29,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:40:29,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:40:29,106 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:40:29,107 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:40:29,107 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-11-07 00:40:29,189 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9015b56fb/97a4cf1c1d4b4f7884e30f2999922258/FLAG24d262d6c [2018-11-07 00:40:29,939 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:40:29,940 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-11-07 00:40:29,970 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9015b56fb/97a4cf1c1d4b4f7884e30f2999922258/FLAG24d262d6c [2018-11-07 00:40:29,991 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9015b56fb/97a4cf1c1d4b4f7884e30f2999922258 [2018-11-07 00:40:30,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:40:30,007 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:40:30,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:40:30,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:40:30,015 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:40:30,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:40:29" (1/1) ... [2018-11-07 00:40:30,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19bdfa3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:30, skipping insertion in model container [2018-11-07 00:40:30,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:40:29" (1/1) ... [2018-11-07 00:40:30,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:40:30,166 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:40:31,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:40:31,138 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:40:31,562 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:40:31,587 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:40:31,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31 WrapperNode [2018-11-07 00:40:31,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:40:31,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:40:31,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:40:31,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:40:31,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:31,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:31,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:40:31,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:40:31,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:40:31,878 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:40:31,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:31,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:31,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:31,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:32,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:32,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:32,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2018-11-07 00:40:32,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:40:32,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:40:32,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:40:32,126 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:40:32,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (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 00:40:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:40:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:40:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:40:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:40:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:40:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:40:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:40:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:40:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:40:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:40:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:40:41,488 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:40:41,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:40:41 BoogieIcfgContainer [2018-11-07 00:40:41,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:40:41,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:40:41,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:40:41,494 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:40:41,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:40:29" (1/3) ... [2018-11-07 00:40:41,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316735da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:40:41, skipping insertion in model container [2018-11-07 00:40:41,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (2/3) ... [2018-11-07 00:40:41,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316735da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:40:41, skipping insertion in model container [2018-11-07 00:40:41,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:40:41" (3/3) ... [2018-11-07 00:40:41,498 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label31_false-unreach-call.c [2018-11-07 00:40:41,509 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:40:41,519 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:40:41,535 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:40:41,581 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:40:41,581 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:40:41,581 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:40:41,581 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:40:41,581 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:40:41,581 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:40:41,582 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:40:41,582 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:40:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 00:40:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 00:40:41,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:40:41,628 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:40:41,632 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:40:41,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:40:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1332199658, now seen corresponding path program 1 times [2018-11-07 00:40:41,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:40:41,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:40:41,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:40:41,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:40:41,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:40:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:40:42,066 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 00:40:42,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:40:42,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:40:42,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:40:42,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:40:42,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:40:42,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:40:42,120 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 00:40:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:40:50,139 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-11-07 00:40:50,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:40:50,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-07 00:40:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:40:50,174 INFO L225 Difference]: With dead ends: 2118 [2018-11-07 00:40:50,174 INFO L226 Difference]: Without dead ends: 1508 [2018-11-07 00:40:50,191 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 00:40:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-11-07 00:40:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-11-07 00:40:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-11-07 00:40:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-11-07 00:40:50,343 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 15 [2018-11-07 00:40:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:40:50,344 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-11-07 00:40:50,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:40:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-11-07 00:40:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-07 00:40:50,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:40:50,351 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:40:50,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:40:50,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:40:50,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1251140705, now seen corresponding path program 1 times [2018-11-07 00:40:50,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:40:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:40:50,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:40:50,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:40:50,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:40:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:40:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:40:50,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:40:50,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:40:50,801 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 91 with the following transitions: [2018-11-07 00:40:50,803 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:40:50,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:40:50,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:40:52,383 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:41:12,292 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:41:12,294 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:41:12,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:41:12,308 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:41:12,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:41:12,309 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:41:12,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:41:12,327 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:41:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:41:12,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:41:15,021 WARN L179 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-07 00:41:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:41:15,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:41:16,229 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-11-07 00:41:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:41:16,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 00:41:16,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 00:41:16,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:41:16,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:41:16,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:41:16,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 00:41:16,593 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-11-07 00:43:58,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:43:58,783 INFO L93 Difference]: Finished difference Result 3454 states and 5560 transitions. [2018-11-07 00:43:58,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:43:58,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-11-07 00:43:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:43:58,806 INFO L225 Difference]: With dead ends: 3454 [2018-11-07 00:43:58,806 INFO L226 Difference]: Without dead ends: 2421 [2018-11-07 00:43:58,814 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 00:43:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2018-11-07 00:43:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2411. [2018-11-07 00:43:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2018-11-07 00:43:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3783 transitions. [2018-11-07 00:43:58,927 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3783 transitions. Word has length 90 [2018-11-07 00:43:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:43:58,928 INFO L480 AbstractCegarLoop]: Abstraction has 2411 states and 3783 transitions. [2018-11-07 00:43:58,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:43:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3783 transitions. [2018-11-07 00:43:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 00:43:58,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:43:58,937 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:43:58,937 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:43:58,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:43:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash 785805159, now seen corresponding path program 1 times [2018-11-07 00:43:58,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:43:58,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:43:58,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:43:58,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:43:58,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:43:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:43:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:43:59,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:43:59,223 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:43:59,224 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2018-11-07 00:43:59,224 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:43:59,230 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:43:59,230 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:44:00,416 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:44:07,350 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:44:07,351 INFO L272 AbstractInterpreter]: Visited 96 different actions 273 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:44:07,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:07,388 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:44:07,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:44:07,389 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:44:07,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:07,403 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:44:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:07,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:44:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:07,627 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:44:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:07,883 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:44:07,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 00:44:07,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:44:07,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:44:07,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:44:07,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:44:07,885 INFO L87 Difference]: Start difference. First operand 2411 states and 3783 transitions. Second operand 3 states. [2018-11-07 00:44:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:44:12,534 INFO L93 Difference]: Finished difference Result 6997 states and 11224 transitions. [2018-11-07 00:44:12,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:44:12,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2018-11-07 00:44:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:44:12,564 INFO L225 Difference]: With dead ends: 6997 [2018-11-07 00:44:12,564 INFO L226 Difference]: Without dead ends: 4592 [2018-11-07 00:44:12,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:44:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2018-11-07 00:44:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4591. [2018-11-07 00:44:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2018-11-07 00:44:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 7184 transitions. [2018-11-07 00:44:12,707 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 7184 transitions. Word has length 103 [2018-11-07 00:44:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:44:12,708 INFO L480 AbstractCegarLoop]: Abstraction has 4591 states and 7184 transitions. [2018-11-07 00:44:12,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:44:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 7184 transitions. [2018-11-07 00:44:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 00:44:12,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:44:12,714 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:44:12,714 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:44:12,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:12,715 INFO L82 PathProgramCache]: Analyzing trace with hash -331575680, now seen corresponding path program 1 times [2018-11-07 00:44:12,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:44:12,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:12,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:12,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:12,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:44:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:12,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:44:12,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:44:12,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:44:12,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:44:12,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:44:12,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:44:12,970 INFO L87 Difference]: Start difference. First operand 4591 states and 7184 transitions. Second operand 5 states. [2018-11-07 00:44:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:44:21,911 INFO L93 Difference]: Finished difference Result 15484 states and 24936 transitions. [2018-11-07 00:44:21,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:44:21,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2018-11-07 00:44:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:44:21,982 INFO L225 Difference]: With dead ends: 15484 [2018-11-07 00:44:21,982 INFO L226 Difference]: Without dead ends: 10899 [2018-11-07 00:44:22,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:44:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10899 states. [2018-11-07 00:44:22,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10899 to 10850. [2018-11-07 00:44:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10850 states. [2018-11-07 00:44:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 15525 transitions. [2018-11-07 00:44:22,316 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 15525 transitions. Word has length 153 [2018-11-07 00:44:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:44:22,317 INFO L480 AbstractCegarLoop]: Abstraction has 10850 states and 15525 transitions. [2018-11-07 00:44:22,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:44:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 15525 transitions. [2018-11-07 00:44:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 00:44:22,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:44:22,323 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 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 00:44:22,323 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:44:22,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:22,323 INFO L82 PathProgramCache]: Analyzing trace with hash -910710122, now seen corresponding path program 1 times [2018-11-07 00:44:22,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:44:22,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:22,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:22,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:22,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:44:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:22,647 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:44:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 00:44:22,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:44:22,775 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:44:22,776 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-11-07 00:44:22,776 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1290], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:44:22,781 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:44:22,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:44:23,934 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:44:39,499 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:44:39,499 INFO L272 AbstractInterpreter]: Visited 99 different actions 562 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:44:39,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:39,507 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:44:39,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:44:39,507 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:44:39,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:39,517 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:44:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:39,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:44:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:39,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:44:40,030 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 00:44:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:40,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 00:44:40,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 00:44:40,588 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 00:44:40,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 00:44:40,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 00:44:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 00:44:40,589 INFO L87 Difference]: Start difference. First operand 10850 states and 15525 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 00:44:41,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:44:41,120 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:44:41,126 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:44:41,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:44:41 BoogieIcfgContainer [2018-11-07 00:44:41,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:44:41,127 INFO L168 Benchmark]: Toolchain (without parser) took 251122.88 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:44:41,129 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-07 00:44:41,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1580.38 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:41,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 288.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -939.2 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:41,131 INFO L168 Benchmark]: Boogie Preprocessor took 247.33 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:41,132 INFO L168 Benchmark]: RCFGBuilder took 9363.87 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: 448.5 MB). Peak memory consumption was 448.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:41,133 INFO L168 Benchmark]: TraceAbstraction took 239636.30 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 2.5 GB in the end (delta: -806.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:44:41,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1580.38 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 288.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -939.2 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.33 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9363.87 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: 448.5 MB). Peak memory consumption was 448.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239636.30 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 2.5 GB in the end (delta: -806.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 32]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 32). Cancelled while BasicCegarLoop was constructing difference of abstraction (10850states) and FLOYD_HOARE automaton (currently 7 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (381 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 239.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 184.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1960 SDtfs, 5709 SDslu, 1075 SDs, 0 SdLazy, 12625 SolverSat, 3251 SolverUnsat, 72 SolverUnknown, 0 SolverNotchecked, 179.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 789 GetRequests, 744 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10850occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 46.4s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 529 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 914 NumberOfCodeBlocks, 914 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1276 ConstructedInterpolants, 80 QuantifiedInterpolants, 751247 SizeOfPredicates, 6 NumberOfNonLiveVariables, 872 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 300/329 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown