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_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:57:55,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:57:55,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:57:55,293 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:57:55,293 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:57:55,294 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:57:55,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:57:55,300 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:57:55,302 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:57:55,303 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:57:55,304 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:57:55,304 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:57:55,305 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:57:55,306 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:57:55,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:57:55,307 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:57:55,308 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:57:55,310 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:57:55,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:57:55,314 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:57:55,315 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:57:55,316 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:57:55,322 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:57:55,333 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:57:55,333 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:57:55,334 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:57:55,334 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:57:55,335 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 18:57:55,367 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:57:55,367 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:57:55,368 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:57:55,368 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:57:55,369 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:57:55,369 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:57:55,369 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:57:55,369 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:57:55,369 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:57:55,370 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:57:55,370 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:57:55,370 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:57:55,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:57:55,371 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:57:55,371 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:57:55,371 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:57:55,371 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:57:55,372 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:57:55,372 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:57:55,372 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:57:55,372 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:57:55,372 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:57:55,373 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:57:55,373 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:57:55,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:57:55,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:57:55,373 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:57:55,374 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:57:55,374 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:57:55,374 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:57:55,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:57:55,374 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:57:55,375 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:57:55,375 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:57:55,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:57:55,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:57:55,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:57:55,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:57:55,437 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:57:55,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12_false-unreach-call.c [2018-10-24 18:57:55,507 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cc7f4f77/3aa957da6d1749629a29f5a5869a8746/FLAG28bd45a4b [2018-10-24 18:57:56,310 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:57:56,311 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12_false-unreach-call.c [2018-10-24 18:57:56,344 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cc7f4f77/3aa957da6d1749629a29f5a5869a8746/FLAG28bd45a4b [2018-10-24 18:57:56,361 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cc7f4f77/3aa957da6d1749629a29f5a5869a8746 [2018-10-24 18:57:56,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:57:56,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:57:56,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:56,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:57:56,378 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:57:56,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:56" (1/1) ... [2018-10-24 18:57:56,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:56, skipping insertion in model container [2018-10-24 18:57:56,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:56" (1/1) ... [2018-10-24 18:57:56,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:57:56,523 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:57:57,520 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:57,525 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:57:58,000 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:58,031 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:57:58,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58 WrapperNode [2018-10-24 18:57:58,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:58,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:58,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:57:58,034 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:57:58,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:58,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:57:58,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:57:58,465 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:57:58,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (1/1) ... [2018-10-24 18:57:58,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:57:58,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:57:58,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:57:58,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:57:58,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (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 18:57:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:57:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:57:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:57:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:57:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:57:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:57:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:57:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:57:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:57:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:57:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:57:58,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:58:07,829 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:58:07,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:58:07 BoogieIcfgContainer [2018-10-24 18:58:07,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:58:07,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:58:07,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:58:07,837 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:58:07,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:57:56" (1/3) ... [2018-10-24 18:58:07,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11010ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:58:07, skipping insertion in model container [2018-10-24 18:58:07,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:58" (2/3) ... [2018-10-24 18:58:07,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11010ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:58:07, skipping insertion in model container [2018-10-24 18:58:07,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:58:07" (3/3) ... [2018-10-24 18:58:07,842 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label12_false-unreach-call.c [2018-10-24 18:58:07,850 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:58:07,859 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:58:07,878 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:58:07,931 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:58:07,931 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:58:07,931 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:58:07,931 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:58:07,932 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:58:07,932 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:58:07,932 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:58:07,932 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:58:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:58:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 18:58:07,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:07,993 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:07,995 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:08,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1723919884, now seen corresponding path program 1 times [2018-10-24 18:58:08,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:08,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:08,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:08,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:08,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:08,411 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:58:08,456 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 18:58:08,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:08,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:58:08,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:08,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:58:08,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:58:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:58:08,487 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 18:58:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:15,866 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 18:58:15,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:58:15,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-10-24 18:58:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:15,904 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 18:58:15,904 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 18:58:15,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:58:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 18:58:16,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 18:58:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 18:58:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 18:58:16,071 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 24 [2018-10-24 18:58:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:16,072 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 18:58:16,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:58:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 18:58:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 18:58:16,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:16,078 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:58:16,079 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:16,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash -112872529, now seen corresponding path program 1 times [2018-10-24 18:58:16,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:16,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:16,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:16,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:16,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:16,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:16,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:16,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:16,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:16,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:16,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:16,358 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 18:58:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:24,393 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-24 18:58:24,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:24,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-24 18:58:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:24,416 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 18:58:24,416 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 18:58:24,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 18:58:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-24 18:58:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 18:58:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-24 18:58:24,520 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 99 [2018-10-24 18:58:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:24,520 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-24 18:58:24,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-24 18:58:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 18:58:24,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:24,526 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:58:24,526 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:24,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:24,527 INFO L82 PathProgramCache]: Analyzing trace with hash 810871255, now seen corresponding path program 1 times [2018-10-24 18:58:24,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:24,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:24,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:24,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:24,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:24,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:24,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:24,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:24,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:24,738 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-24 18:58:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:30,640 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-10-24 18:58:30,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:30,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 18:58:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:30,669 INFO L225 Difference]: With dead ends: 7337 [2018-10-24 18:58:30,669 INFO L226 Difference]: Without dead ends: 4415 [2018-10-24 18:58:30,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-10-24 18:58:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-10-24 18:58:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-10-24 18:58:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-10-24 18:58:30,809 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 111 [2018-10-24 18:58:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:30,809 INFO L481 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-10-24 18:58:30,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-10-24 18:58:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 18:58:30,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:30,813 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:30,813 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:30,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:30,814 INFO L82 PathProgramCache]: Analyzing trace with hash -306476058, now seen corresponding path program 1 times [2018-10-24 18:58:30,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:30,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:30,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:30,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:30,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:31,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:58:31,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:58:31,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-10-24 18:58:31,109 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1715], [1717], [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], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:58:31,189 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:58:31,190 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:58:33,967 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:58:34,061 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:58:34,063 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 18:58:34,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:34,075 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:58:35,577 INFO L232 lantSequenceWeakener]: Weakened 131 states. On average, predicates are now at 77.58% of their original sizes. [2018-10-24 18:58:35,578 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:58:35,802 INFO L413 sIntCurrentIteration]: We have 135 unified AI predicates [2018-10-24 18:58:35,802 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:58:35,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:58:35,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 18:58:35,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:35,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:58:35,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:58:35,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:58:35,805 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 7 states. [2018-10-24 19:00:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:00:23,063 INFO L93 Difference]: Finished difference Result 9493 states and 13867 transitions. [2018-10-24 19:00:23,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:00:23,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2018-10-24 19:00:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:00:23,084 INFO L225 Difference]: With dead ends: 9493 [2018-10-24 19:00:23,084 INFO L226 Difference]: Without dead ends: 5102 [2018-10-24 19:00:23,096 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:00:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-24 19:00:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2018-10-24 19:00:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2018-10-24 19:00:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7209 transitions. [2018-10-24 19:00:23,233 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7209 transitions. Word has length 136 [2018-10-24 19:00:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:00:23,234 INFO L481 AbstractCegarLoop]: Abstraction has 5100 states and 7209 transitions. [2018-10-24 19:00:23,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:00:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7209 transitions. [2018-10-24 19:00:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-24 19:00:23,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:23,244 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:23,244 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:23,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash 408677289, now seen corresponding path program 1 times [2018-10-24 19:00:23,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:23,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:23,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:23,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:23,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:23,806 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:00:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 88 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:00:24,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:00:24,379 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:00:24,379 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 324 with the following transitions: [2018-10-24 19:00:24,380 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1715], [1717], [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], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [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 19:00:24,394 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:00:24,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:00:26,190 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:00:37,355 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:00:37,356 INFO L272 AbstractInterpreter]: Visited 195 different actions 383 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 19:00:37,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:37,395 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:00:41,106 INFO L232 lantSequenceWeakener]: Weakened 105 states. On average, predicates are now at 78% of their original sizes. [2018-10-24 19:00:41,106 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:01:07,910 INFO L413 sIntCurrentIteration]: We have 322 unified AI predicates [2018-10-24 19:01:07,910 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:01:07,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:01:07,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-10-24 19:01:07,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:07,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 19:01:07,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 19:01:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-10-24 19:01:07,913 INFO L87 Difference]: Start difference. First operand 5100 states and 7209 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 19:01:46,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:01:46,753 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:01:46,758 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:01:46,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:01:46 BoogieIcfgContainer [2018-10-24 19:01:46,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:01:46,759 INFO L168 Benchmark]: Toolchain (without parser) took 230387.19 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:01:46,762 INFO L168 Benchmark]: CDTParser took 0.33 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 19:01:46,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1658.33 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 19:01:46,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 431.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.8 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:46,765 INFO L168 Benchmark]: Boogie Preprocessor took 263.64 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:46,766 INFO L168 Benchmark]: RCFGBuilder took 9103.88 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: 507.7 MB). Peak memory consumption was 507.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:46,766 INFO L168 Benchmark]: TraceAbstraction took 218925.43 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 2.6 GB in the end (delta: -894.8 MB). Peak memory consumption was 981.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:46,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 1658.33 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 431.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.8 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.64 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9103.88 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: 507.7 MB). Peak memory consumption was 507.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218925.43 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 2.6 GB in the end (delta: -894.8 MB). Peak memory consumption was 981.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (5100states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (119 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 218.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 167.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1125 SDtfs, 7708 SDslu, 649 SDs, 0 SdLazy, 12837 SolverSat, 3675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 487 GetRequests, 409 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 27.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5100occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955839913741159 AbsIntWeakeningRatio, 0.10065645514223195 AbsIntAvgWeakeningVarsNumRemoved, 276.582056892779 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 693 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 1321728 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 122/197 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown