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/Problem12_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:44:21,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:44:21,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:44:21,375 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:44:21,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:44:21,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:44:21,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:44:21,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:44:21,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:44:21,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:44:21,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:44:21,383 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:44:21,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:44:21,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:44:21,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:44:21,387 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:44:21,388 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:44:21,390 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:44:21,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:44:21,394 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:44:21,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:44:21,397 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:44:21,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:44:21,406 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:44:21,406 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:44:21,407 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:44:21,408 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:44:21,408 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 [2018-10-26 23:44:21,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:44:21,425 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:44:21,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:44:21,427 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:44:21,429 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:44:21,429 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:44:21,429 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:44:21,429 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:44:21,430 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:44:21,430 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:44:21,430 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:44:21,430 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:44:21,432 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:44:21,432 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:44:21,432 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:44:21,432 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:44:21,433 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:44:21,433 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:44:21,433 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:44:21,433 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:44:21,433 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:44:21,434 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:44:21,435 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:44:21,435 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:44:21,435 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:44:21,435 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:44:21,435 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:44:21,436 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:44:21,436 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:44:21,436 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:44:21,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:44:21,436 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:44:21,437 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:44:21,437 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:44:21,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:44:21,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:44:21,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:44:21,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:44:21,519 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:44:21,520 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-10-26 23:44:21,576 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb1a8ca64/92508840e65b40a783749ae454903fb6/FLAG1af45ee8f [2018-10-26 23:44:22,309 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:44:22,310 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-10-26 23:44:22,337 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb1a8ca64/92508840e65b40a783749ae454903fb6/FLAG1af45ee8f [2018-10-26 23:44:22,351 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb1a8ca64/92508840e65b40a783749ae454903fb6 [2018-10-26 23:44:22,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:44:22,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:44:22,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:44:22,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:44:22,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:44:22,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:44:22" (1/1) ... [2018-10-26 23:44:22,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:22, skipping insertion in model container [2018-10-26 23:44:22,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:44:22" (1/1) ... [2018-10-26 23:44:22,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:44:22,548 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:44:23,847 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:44:23,852 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:44:24,443 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:44:24,478 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:44:24,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24 WrapperNode [2018-10-26 23:44:24,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:44:24,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:44:24,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:44:24,480 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:44:24,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:24,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:24,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:44:24,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:44:24,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:44:24,945 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:44:24,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:24,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:24,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:24,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:25,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:25,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:25,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (1/1) ... [2018-10-26 23:44:25,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:44:25,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:44:25,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:44:25,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:44:25,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (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 [2018-10-26 23:44:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:44:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:44:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-26 23:44:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-26 23:44:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-26 23:44:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-26 23:44:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-26 23:44:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-26 23:44:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:44:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:44:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:44:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:44:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:44:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:44:37,161 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:44:37,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:44:37 BoogieIcfgContainer [2018-10-26 23:44:37,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:44:37,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:44:37,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:44:37,167 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:44:37,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:44:22" (1/3) ... [2018-10-26 23:44:37,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52892750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:44:37, skipping insertion in model container [2018-10-26 23:44:37,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:24" (2/3) ... [2018-10-26 23:44:37,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52892750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:44:37, skipping insertion in model container [2018-10-26 23:44:37,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:44:37" (3/3) ... [2018-10-26 23:44:37,172 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label55_false-unreach-call.c [2018-10-26 23:44:37,182 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:44:37,198 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:44:37,216 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:44:37,282 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:44:37,282 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:44:37,282 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:44:37,282 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:44:37,282 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:44:37,282 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:44:37,283 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:44:37,283 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:44:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-26 23:44:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 23:44:37,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:44:37,359 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:44:37,361 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:44:37,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:44:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2129497701, now seen corresponding path program 1 times [2018-10-26 23:44:37,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:44:37,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:37,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:44:37,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:37,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:44:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:44:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:37,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:44:37,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:44:37,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:44:37,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:44:37,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:44:37,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:44:37,823 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-26 23:44:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:44:50,178 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-26 23:44:50,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:44:50,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-26 23:44:50,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:44:50,233 INFO L225 Difference]: With dead ends: 3234 [2018-10-26 23:44:50,233 INFO L226 Difference]: Without dead ends: 2388 [2018-10-26 23:44:50,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:44:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-26 23:44:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-26 23:44:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-26 23:44:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-10-26 23:44:50,476 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 15 [2018-10-26 23:44:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:44:50,476 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-10-26 23:44:50,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:44:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-10-26 23:44:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 23:44:50,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:44:50,482 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:44:50,483 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:44:50,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:44:50,483 INFO L82 PathProgramCache]: Analyzing trace with hash -135376495, now seen corresponding path program 1 times [2018-10-26 23:44:50,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:44:50,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:50,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:44:50,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:50,485 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:44:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:44:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:50,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:44:50,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:44:50,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:44:50,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:44:50,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:44:50,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:44:50,840 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-10-26 23:45:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:06,567 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-10-26 23:45:06,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:45:06,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-10-26 23:45:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:06,615 INFO L225 Difference]: With dead ends: 9463 [2018-10-26 23:45:06,615 INFO L226 Difference]: Without dead ends: 7081 [2018-10-26 23:45:06,628 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 [2018-10-26 23:45:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-10-26 23:45:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-10-26 23:45:06,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-10-26 23:45:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-10-26 23:45:06,821 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 96 [2018-10-26 23:45:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:06,822 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-10-26 23:45:06,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:45:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-10-26 23:45:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-26 23:45:06,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:06,827 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:45:06,827 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:06,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -87022815, now seen corresponding path program 1 times [2018-10-26 23:45:06,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:06,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:06,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:06,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:06,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:07,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:07,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:45:07,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:07,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:45:07,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:45:07,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:45:07,082 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-10-26 23:45:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:18,332 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-10-26 23:45:18,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:45:18,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-26 23:45:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:18,429 INFO L225 Difference]: With dead ends: 23489 [2018-10-26 23:45:18,429 INFO L226 Difference]: Without dead ends: 16458 [2018-10-26 23:45:18,469 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 [2018-10-26 23:45:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-10-26 23:45:18,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-10-26 23:45:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-10-26 23:45:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-10-26 23:45:18,869 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 104 [2018-10-26 23:45:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:18,870 INFO L481 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-10-26 23:45:18,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:45:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-10-26 23:45:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-26 23:45:18,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:18,875 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:45:18,875 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:18,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1280943624, now seen corresponding path program 1 times [2018-10-26 23:45:18,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:18,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:18,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:18,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:18,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:19,134 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:45:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:19,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:19,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:45:19,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:19,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:45:19,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:45:19,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:45:19,528 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-10-26 23:45:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:32,274 INFO L93 Difference]: Finished difference Result 42327 states and 60127 transitions. [2018-10-26 23:45:32,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:45:32,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-26 23:45:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:32,372 INFO L225 Difference]: With dead ends: 42327 [2018-10-26 23:45:32,372 INFO L226 Difference]: Without dead ends: 25964 [2018-10-26 23:45:32,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:45:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25964 states. [2018-10-26 23:45:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25964 to 25854. [2018-10-26 23:45:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25854 states. [2018-10-26 23:45:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25854 states to 25854 states and 33995 transitions. [2018-10-26 23:45:33,283 INFO L78 Accepts]: Start accepts. Automaton has 25854 states and 33995 transitions. Word has length 115 [2018-10-26 23:45:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:33,283 INFO L481 AbstractCegarLoop]: Abstraction has 25854 states and 33995 transitions. [2018-10-26 23:45:33,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:45:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25854 states and 33995 transitions. [2018-10-26 23:45:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-26 23:45:33,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:33,290 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:45:33,291 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:33,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1522182260, now seen corresponding path program 1 times [2018-10-26 23:45:33,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:33,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:33,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:33,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:33,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:33,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:45:33,827 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:45:33,828 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-26 23:45:33,834 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1887], [1889], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2404], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-26 23:45:33,923 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:45:33,923 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:45:39,835 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:45:39,837 INFO L272 AbstractInterpreter]: Visited 89 different actions 171 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-26 23:45:39,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:39,882 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:45:42,853 INFO L227 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 75.4% of their original sizes. [2018-10-26 23:45:42,853 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:45:56,969 INFO L415 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2018-10-26 23:45:56,969 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:45:56,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:45:56,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-26 23:45:56,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:56,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:45:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:45:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:45:56,973 INFO L87 Difference]: Start difference. First operand 25854 states and 33995 transitions. Second operand 20 states. [2018-10-26 23:47:13,959 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-26 23:48:15,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 23:48:15,009 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:48:15,014 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:48:15,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:48:15 BoogieIcfgContainer [2018-10-26 23:48:15,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:48:15,016 INFO L168 Benchmark]: Toolchain (without parser) took 232653.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 23:48:15,017 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:48:15,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2114.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:15,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 464.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 753.4 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -990.9 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:15,019 INFO L168 Benchmark]: Boogie Preprocessor took 225.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:15,020 INFO L168 Benchmark]: RCFGBuilder took 11991.77 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 195.0 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -210.7 MB). Peak memory consumption was 686.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:15,021 INFO L168 Benchmark]: TraceAbstraction took 217851.55 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -528.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 23:48:15,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2114.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 464.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 753.4 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -990.9 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11991.77 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 195.0 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -210.7 MB). Peak memory consumption was 686.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217851.55 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -528.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (25854states) and FLOYD_HOARE automaton (currently 18 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (2909 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 217.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 190.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 792 SDtfs, 16171 SDslu, 616 SDs, 0 SdLazy, 23621 SolverSat, 6383 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 109.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 213 GetRequests, 160 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25854occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934143049932522 AbsIntWeakeningRatio, 0.15789473684210525 AbsIntAvgWeakeningVarsNumRemoved, 519.8011695906433 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 243 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 502 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 284076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 114/116 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown