java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4_true-unreach-call.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 10:07:36,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 10:07:36,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 10:07:36,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 10:07:36,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 10:07:36,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 10:07:36,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 10:07:36,760 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 10:07:36,763 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 10:07:36,764 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 10:07:36,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 10:07:36,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 10:07:36,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 10:07:36,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 10:07:36,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 10:07:36,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 10:07:36,781 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 10:07:36,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 10:07:36,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 10:07:36,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 10:07:36,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 10:07:36,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 10:07:36,802 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 10:07:36,802 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 10:07:36,802 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 10:07:36,804 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 10:07:36,805 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 10:07:36,806 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 10:07:36,807 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 10:07:36,810 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 10:07:36,810 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 10:07:36,811 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 10:07:36,817 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 10:07:36,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 10:07:36,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 10:07:36,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 10:07:36,849 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 10:07:36,849 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 10:07:36,849 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 10:07:36,849 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 10:07:36,850 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 10:07:36,850 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 10:07:36,850 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 10:07:36,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 10:07:36,850 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 10:07:36,852 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 10:07:36,852 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 10:07:36,852 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 10:07:36,852 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 10:07:36,852 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 10:07:36,853 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 10:07:36,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 10:07:36,855 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 10:07:36,855 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 10:07:36,855 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 10:07:36,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 10:07:36,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 10:07:36,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 10:07:36,856 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 10:07:36,857 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 10:07:36,857 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 10:07:36,857 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 10:07:36,857 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 10:07:36,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 10:07:36,858 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 10:07:36,858 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 10:07:36,858 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 10:07:36,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 10:07:36,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 10:07:36,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 10:07:36,947 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 10:07:36,948 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 10:07:36,948 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4_true-unreach-call.c.v+cfa-reducer.c [2018-10-23 10:07:37,019 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/af973c10b/40338687ceac4fa69c0422e1e70c2fb4/FLAG072cb2ff8 [2018-10-23 10:07:37,531 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 10:07:37,532 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4_true-unreach-call.c.v+cfa-reducer.c [2018-10-23 10:07:37,542 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/af973c10b/40338687ceac4fa69c0422e1e70c2fb4/FLAG072cb2ff8 [2018-10-23 10:07:37,557 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/af973c10b/40338687ceac4fa69c0422e1e70c2fb4 [2018-10-23 10:07:37,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 10:07:37,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 10:07:37,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 10:07:37,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 10:07:37,575 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 10:07:37,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:07:37" (1/1) ... [2018-10-23 10:07:37,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b06b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:37, skipping insertion in model container [2018-10-23 10:07:37,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:07:37" (1/1) ... [2018-10-23 10:07:37,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 10:07:37,625 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 10:07:37,927 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:07:37,938 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 10:07:38,019 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:07:38,042 INFO L193 MainTranslator]: Completed translation [2018-10-23 10:07:38,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38 WrapperNode [2018-10-23 10:07:38,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 10:07:38,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 10:07:38,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 10:07:38,044 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 10:07:38,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 10:07:38,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 10:07:38,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 10:07:38,248 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 10:07:38,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... [2018-10-23 10:07:38,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 10:07:38,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 10:07:38,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 10:07:38,355 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 10:07:38,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 10:07:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 10:07:38,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 10:07:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 10:07:38,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 10:07:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 10:07:38,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 10:07:42,381 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 10:07:42,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:07:42 BoogieIcfgContainer [2018-10-23 10:07:42,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 10:07:42,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 10:07:42,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 10:07:42,387 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 10:07:42,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:07:37" (1/3) ... [2018-10-23 10:07:42,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88ed14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:07:42, skipping insertion in model container [2018-10-23 10:07:42,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:38" (2/3) ... [2018-10-23 10:07:42,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88ed14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:07:42, skipping insertion in model container [2018-10-23 10:07:42,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:07:42" (3/3) ... [2018-10-23 10:07:42,391 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4_true-unreach-call.c.v+cfa-reducer.c [2018-10-23 10:07:42,401 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 10:07:42,410 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 10:07:42,428 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 10:07:42,459 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 10:07:42,459 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 10:07:42,460 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 10:07:42,460 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 10:07:42,460 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 10:07:42,461 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 10:07:42,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 10:07:42,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 10:07:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-23 10:07:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 10:07:42,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:07:42,488 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:07:42,490 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:07:42,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash -772479634, now seen corresponding path program 1 times [2018-10-23 10:07:42,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:07:42,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:42,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:42,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:42,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:07:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:42,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 10:07:42,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 10:07:42,995 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:07:43,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 10:07:43,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 10:07:43,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 10:07:43,021 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-10-23 10:07:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:07:43,320 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-23 10:07:43,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 10:07:43,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-23 10:07:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:07:43,332 INFO L225 Difference]: With dead ends: 35 [2018-10-23 10:07:43,332 INFO L226 Difference]: Without dead ends: 23 [2018-10-23 10:07:43,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 10:07:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-23 10:07:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2018-10-23 10:07:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-23 10:07:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-23 10:07:43,375 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-10-23 10:07:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:07:43,376 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-23 10:07:43,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 10:07:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-23 10:07:43,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 10:07:43,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:07:43,377 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:07:43,377 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:07:43,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:43,378 INFO L82 PathProgramCache]: Analyzing trace with hash -772062560, now seen corresponding path program 1 times [2018-10-23 10:07:43,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:07:43,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:43,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:43,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:43,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:07:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:43,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 10:07:43,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 10:07:43,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:07:43,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 10:07:43,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 10:07:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 10:07:43,729 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-10-23 10:07:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:07:43,844 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-10-23 10:07:43,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 10:07:43,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-23 10:07:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:07:43,848 INFO L225 Difference]: With dead ends: 34 [2018-10-23 10:07:43,848 INFO L226 Difference]: Without dead ends: 24 [2018-10-23 10:07:43,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 10:07:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-23 10:07:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-23 10:07:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-23 10:07:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-23 10:07:43,857 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-10-23 10:07:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:07:43,857 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-23 10:07:43,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 10:07:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-23 10:07:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 10:07:43,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:07:43,859 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:07:43,859 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:07:43,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:07:43,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1935785144, now seen corresponding path program 1 times [2018-10-23 10:07:43,860 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:07:43,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:43,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:07:43,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:07:43,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:07:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:07:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:07:44,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:07:44,280 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 10:07:44,281 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-23 10:07:44,283 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [11], [14], [17], [19], [22], [23], [25], [28], [31], [35], [36], [37] [2018-10-23 10:07:44,352 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 10:07:44,353 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 10:07:45,962 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 10:11:53,358 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 10:11:53,359 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 10:11:53,360 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 10:11:53,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:11:53,360 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 10:11:53,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:11:53,379 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 10:11:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:11:53,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 10:11:53,608 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 10:11:53,809 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 10:11:53,810 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 10:11:53,815 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 10:11:53,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:11:53 BoogieIcfgContainer [2018-10-23 10:11:53,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 10:11:53,816 INFO L168 Benchmark]: Toolchain (without parser) took 256247.30 ms. Allocated memory was 1.5 GB in the beginning and 6.3 GB in the end (delta: 4.8 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 10:11:53,818 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 10:11:53,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-23 10:11:53,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2018-10-23 10:11:53,821 INFO L168 Benchmark]: Boogie Preprocessor took 106.35 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 10:11:53,821 INFO L168 Benchmark]: RCFGBuilder took 4027.75 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 127.4 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 580.0 MB). Peak memory consumption was 707.5 MB. Max. memory is 7.1 GB. [2018-10-23 10:11:53,822 INFO L168 Benchmark]: TraceAbstraction took 251432.57 ms. Allocated memory was 2.4 GB in the beginning and 6.3 GB in the end (delta: 3.9 GB). Free memory was 1.7 GB in the beginning and 4.0 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 10:11:53,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 472.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 203.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.35 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4027.75 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 127.4 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 580.0 MB). Peak memory consumption was 707.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251432.57 ms. Allocated memory was 2.4 GB in the beginning and 6.3 GB in the end (delta: 3.9 GB). Free memory was 1.7 GB in the beginning and 4.0 GB in the end (delta: -2.3 GB). 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: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. TIMEOUT Result, 251.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 25 SDslu, 56 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 249.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown