java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:00:36,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:00:36,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:00:36,451 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:00:36,451 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:00:36,454 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:00:36,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:00:36,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:00:36,462 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:00:36,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:00:36,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:00:36,466 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:00:36,467 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:00:36,468 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:00:36,471 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:00:36,472 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:00:36,473 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:00:36,483 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:00:36,488 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:00:36,490 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:00:36,491 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:00:36,492 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:00:36,497 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:00:36,510 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:00:36,511 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:00:36,512 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:00:36,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:00:36,513 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:00:36,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:00:36,535 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:00:36,536 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:00:36,536 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:00:36,536 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:00:36,536 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:00:36,537 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:00:36,537 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:00:36,537 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:00:36,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:00:36,537 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:00:36,538 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:00:36,538 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:00:36,539 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:00:36,539 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:00:36,539 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:00:36,539 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:00:36,539 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:00:36,540 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:00:36,540 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:00:36,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:00:36,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:00:36,540 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:00:36,541 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:00:36,541 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:00:36,541 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:00:36,541 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:00:36,541 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:00:36,541 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:00:36,542 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:00:36,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:00:36,542 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:00:36,542 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:00:36,542 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:00:36,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:00:36,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:00:36,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:00:36,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:00:36,626 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:00:36,627 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-10-24 19:00:36,684 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c27c45b0b/dc58ba41cd9e4a5087a38ffbfeaba243/FLAG48784022c [2018-10-24 19:00:37,371 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:00:37,372 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-10-24 19:00:37,398 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c27c45b0b/dc58ba41cd9e4a5087a38ffbfeaba243/FLAG48784022c [2018-10-24 19:00:37,416 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c27c45b0b/dc58ba41cd9e4a5087a38ffbfeaba243 [2018-10-24 19:00:37,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:00:37,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:00:37,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:00:37,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:00:37,440 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:00:37,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:00:37" (1/1) ... [2018-10-24 19:00:37,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1803bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:37, skipping insertion in model container [2018-10-24 19:00:37,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:00:37" (1/1) ... [2018-10-24 19:00:37,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:00:37,606 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:00:38,769 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:00:38,773 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:00:39,428 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:00:39,461 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:00:39,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39 WrapperNode [2018-10-24 19:00:39,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:00:39,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:00:39,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:00:39,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:00:39,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:00:39,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:00:39,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:00:39,890 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:00:39,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:39,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:40,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:40,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:40,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... [2018-10-24 19:00:40,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:00:40,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:00:40,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:00:40,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:00:40,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:00:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:00:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:00:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:00:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:00:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:00:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:00:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:00:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:00:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:00:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:00:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:00:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:00:48,474 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:00:48,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:00:48 BoogieIcfgContainer [2018-10-24 19:00:48,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:00:48,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:00:48,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:00:48,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:00:48,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:00:37" (1/3) ... [2018-10-24 19:00:48,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e33367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:00:48, skipping insertion in model container [2018-10-24 19:00:48,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:00:39" (2/3) ... [2018-10-24 19:00:48,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e33367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:00:48, skipping insertion in model container [2018-10-24 19:00:48,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:00:48" (3/3) ... [2018-10-24 19:00:48,485 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label31_false-unreach-call.c [2018-10-24 19:00:48,495 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:00:48,510 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:00:48,526 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:00:48,574 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:00:48,575 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:00:48,575 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:00:48,575 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:00:48,575 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:00:48,575 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:00:48,575 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:00:48,578 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:00:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 19:00:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 19:00:48,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:48,640 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:00:48,642 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:48,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 609614244, now seen corresponding path program 1 times [2018-10-24 19:00:48,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:48,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:48,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:48,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:48,696 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:49,013 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:00:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:00:49,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:00:49,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:00:49,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:49,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:00:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:00:49,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:00:49,153 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 19:00:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:00:56,168 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 19:00:56,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:00:56,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-24 19:00:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:00:56,214 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 19:00:56,214 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 19:00:56,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:00:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 19:00:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 19:00:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 19:00:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 19:00:56,396 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 22 [2018-10-24 19:00:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:00:56,396 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 19:00:56,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:00:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 19:00:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-24 19:00:56,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:56,406 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:00:56,406 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:56,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2062892298, now seen corresponding path program 1 times [2018-10-24 19:00:56,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:56,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:56,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:56,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:56,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:56,835 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:00:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:00:57,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:00:57,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:00:57,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:57,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:00:57,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:00:57,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:00:57,247 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 19:01:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:10,416 INFO L93 Difference]: Finished difference Result 5777 states and 11168 transitions. [2018-10-24 19:01:10,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:10,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-10-24 19:01:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:10,460 INFO L225 Difference]: With dead ends: 5777 [2018-10-24 19:01:10,460 INFO L226 Difference]: Without dead ends: 4309 [2018-10-24 19:01:10,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:01:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2018-10-24 19:01:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 4283. [2018-10-24 19:01:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4283 states. [2018-10-24 19:01:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 7016 transitions. [2018-10-24 19:01:10,619 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 7016 transitions. Word has length 96 [2018-10-24 19:01:10,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:10,621 INFO L481 AbstractCegarLoop]: Abstraction has 4283 states and 7016 transitions. [2018-10-24 19:01:10,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:01:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 7016 transitions. [2018-10-24 19:01:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 19:01:10,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:10,645 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:01:10,645 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:10,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:10,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1199088567, now seen corresponding path program 1 times [2018-10-24 19:01:10,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:10,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:10,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:10,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:10,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:11,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:01:11,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:01:11,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:11,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:01:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:01:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:01:11,145 INFO L87 Difference]: Start difference. First operand 4283 states and 7016 transitions. Second operand 6 states. [2018-10-24 19:01:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:16,871 INFO L93 Difference]: Finished difference Result 10060 states and 16785 transitions. [2018-10-24 19:01:16,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:16,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-24 19:01:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:16,909 INFO L225 Difference]: With dead ends: 10060 [2018-10-24 19:01:16,909 INFO L226 Difference]: Without dead ends: 5783 [2018-10-24 19:01:16,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:01:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2018-10-24 19:01:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5754. [2018-10-24 19:01:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5754 states. [2018-10-24 19:01:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 9275 transitions. [2018-10-24 19:01:17,085 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 9275 transitions. Word has length 185 [2018-10-24 19:01:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:17,086 INFO L481 AbstractCegarLoop]: Abstraction has 5754 states and 9275 transitions. [2018-10-24 19:01:17,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:01:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 9275 transitions. [2018-10-24 19:01:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 19:01:17,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:17,092 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:01:17,093 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:17,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2119898916, now seen corresponding path program 1 times [2018-10-24 19:01:17,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:17,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:17,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:17,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:17,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:01:17,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:01:17,428 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:01:17,429 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-24 19:01:17,431 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:01:17,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:01:17,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:01:20,054 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:01:21,980 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:01:21,985 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 19:01:22,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:22,029 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:01:24,324 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-24 19:01:24,324 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:01:24,691 INFO L413 sIntCurrentIteration]: We have 227 unified AI predicates [2018-10-24 19:01:24,691 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:01:24,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:01:24,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 19:01:24,693 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:24,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:01:24,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:01:24,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:01:24,694 INFO L87 Difference]: Start difference. First operand 5754 states and 9275 transitions. Second operand 7 states. [2018-10-24 19:03:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:03:07,509 INFO L93 Difference]: Finished difference Result 12207 states and 19704 transitions. [2018-10-24 19:03:07,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:03:07,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-10-24 19:03:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:03:07,542 INFO L225 Difference]: With dead ends: 12207 [2018-10-24 19:03:07,542 INFO L226 Difference]: Without dead ends: 6459 [2018-10-24 19:03:07,557 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:03:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2018-10-24 19:03:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 6457. [2018-10-24 19:03:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6457 states. [2018-10-24 19:03:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 9987 transitions. [2018-10-24 19:03:07,717 INFO L78 Accepts]: Start accepts. Automaton has 6457 states and 9987 transitions. Word has length 228 [2018-10-24 19:03:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:03:07,718 INFO L481 AbstractCegarLoop]: Abstraction has 6457 states and 9987 transitions. [2018-10-24 19:03:07,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:03:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6457 states and 9987 transitions. [2018-10-24 19:03:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-10-24 19:03:07,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:03:07,731 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:03:07,731 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:03:07,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:03:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1330999225, now seen corresponding path program 1 times [2018-10-24 19:03:07,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:03:07,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:03:07,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:03:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:03:07,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:03:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:03:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 104 proven. 237 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:03:08,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:03:08,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:03:08,728 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-10-24 19:03:08,729 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:03:08,742 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:03:08,743 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:03:11,422 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:03:20,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:03:20,748 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 19:03:20,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:03:20,757 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:03:24,398 INFO L232 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 77.75% of their original sizes. [2018-10-24 19:03:24,399 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:03:52,615 INFO L413 sIntCurrentIteration]: We have 414 unified AI predicates [2018-10-24 19:03:52,615 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:03:52,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:03:52,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2018-10-24 19:03:52,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:03:52,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 19:03:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 19:03:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-10-24 19:03:52,617 INFO L87 Difference]: Start difference. First operand 6457 states and 9987 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 19:04:24,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 19:04:24,550 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:04:24,556 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:04:24,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:04:24 BoogieIcfgContainer [2018-10-24 19:04:24,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:04:24,557 INFO L168 Benchmark]: Toolchain (without parser) took 227125.15 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 2.2 GB in the end (delta: -822.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 19:04:24,558 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. [2018-10-24 19:04:24,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2028.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:24,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 425.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:24,560 INFO L168 Benchmark]: Boogie Preprocessor took 206.76 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:24,561 INFO L168 Benchmark]: RCFGBuilder took 8379.56 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: 517.1 MB). Peak memory consumption was 517.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:04:24,562 INFO L168 Benchmark]: TraceAbstraction took 216078.65 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 2.2 GB in the end (delta: -568.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 19:04:24,568 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 2028.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 425.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.76 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8379.56 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: 517.1 MB). Peak memory consumption was 517.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216078.65 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 2.2 GB in the end (delta: -568.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (6457states) and FLOYD_HOARE automaton (currently 15 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (211 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 160.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1135 SDtfs, 8449 SDslu, 653 SDs, 0 SdLazy, 15210 SolverSat, 4549 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 671 GetRequests, 572 SyntacticMatches, 56 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 29.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961874561938999 AbsIntWeakeningRatio, 0.0904836193447738 AbsIntAvgWeakeningVarsNumRemoved, 763.5304212168487 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 946 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 941 ConstructedInterpolants, 0 QuantifiedInterpolants, 1806377 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 174/501 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown