java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:05:53,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:05:53,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:05:53,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:05:53,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 14:05:53,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 14:05:53,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 14:05:53,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 14:05:53,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 14:05:53,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 14:05:53,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 14:05:53,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2019-09-09 14:05:53,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 14:05:53,527 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:05:53,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:05:53,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:05:53,528 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:05:53,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:05:53,529 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:05:53,529 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:05:53,529 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:05:53,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:05:53,530 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:05:53,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:05:53,532 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:05:53,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:05:53,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:05:53,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:05:53,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:05:53,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:05:53,534 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:05:53,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:05:53,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:05:53,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:05:53,535 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:05:53,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:05:53,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:05:53,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:05:53,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:05:53,536 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:05:53,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:05:53,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:05:53,536 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:05:53,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:05:53,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:05:53,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:05:53,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:05:53,598 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:05:53,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2019-09-09 14:05:53,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cce8cb204/f243b7b7d8df4157b80c43ba0b741519/FLAG2966ca2d2 [2019-09-09 14:05:54,200 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:05:54,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2019-09-09 14:05:54,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cce8cb204/f243b7b7d8df4157b80c43ba0b741519/FLAG2966ca2d2 [2019-09-09 14:05:54,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cce8cb204/f243b7b7d8df4157b80c43ba0b741519 [2019-09-09 14:05:54,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:05:54,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:05:54,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:05:54,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:05:54,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:05:54,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:05:54" (1/1) ... [2019-09-09 14:05:54,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0cf685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:54, skipping insertion in model container [2019-09-09 14:05:54,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:05:54" (1/1) ... [2019-09-09 14:05:54,548 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:05:54,619 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:05:55,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:05:55,201 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:05:55,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:05:55,334 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:05:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55 WrapperNode [2019-09-09 14:05:55,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:05:55,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:05:55,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:05:55,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:05:55,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... [2019-09-09 14:05:55,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:05:55,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:05:55,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:05:55,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:05:55,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:05:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:05:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:05:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:05:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:05:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:05:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:05:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:05:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:05:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:05:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:05:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:05:56,914 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:05:56,914 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:05:56,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:05:56 BoogieIcfgContainer [2019-09-09 14:05:56,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:05:56,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:05:56,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:05:56,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:05:56,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:05:54" (1/3) ... [2019-09-09 14:05:56,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af271e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:05:56, skipping insertion in model container [2019-09-09 14:05:56,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:05:55" (2/3) ... [2019-09-09 14:05:56,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af271e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:05:56, skipping insertion in model container [2019-09-09 14:05:56,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:05:56" (3/3) ... [2019-09-09 14:05:56,935 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2019-09-09 14:05:56,946 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:05:56,954 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:05:56,971 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:05:56,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:05:56,997 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:05:56,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:05:56,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:05:56,998 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:05:56,998 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:05:56,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:05:56,998 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:05:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:05:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-09 14:05:57,032 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:05:57,033 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:05:57,036 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:05:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:05:57,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1575146953, now seen corresponding path program 1 times [2019-09-09 14:05:57,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:05:57,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:05:57,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:05:57,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:05:57,091 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:05:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:05:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:05:57,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:05:57,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 14:05:57,385 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:05:57,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 14:05:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 14:05:57,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:05:57,409 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2019-09-09 14:05:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:05:59,039 INFO L93 Difference]: Finished difference Result 524 states and 762 transitions. [2019-09-09 14:05:59,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 14:05:59,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2019-09-09 14:05:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:05:59,063 INFO L225 Difference]: With dead ends: 524 [2019-09-09 14:05:59,063 INFO L226 Difference]: Without dead ends: 437 [2019-09-09 14:05:59,065 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:05:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-09-09 14:05:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 294. [2019-09-09 14:05:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:05:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2019-09-09 14:05:59,139 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 58 [2019-09-09 14:05:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:05:59,140 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2019-09-09 14:05:59,140 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 14:05:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2019-09-09 14:05:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-09 14:05:59,146 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:05:59,147 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 14:05:59,147 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:05:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:05:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2054791822, now seen corresponding path program 1 times [2019-09-09 14:05:59,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:05:59,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:05:59,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:05:59,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:05:59,149 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:05:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:05:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:05:59,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:05:59,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 14:05:59,436 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:05:59,440 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 14:05:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 14:05:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 14:05:59,441 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 6 states. [2019-09-09 14:06:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:00,407 INFO L93 Difference]: Finished difference Result 602 states and 886 transitions. [2019-09-09 14:06:00,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 14:06:00,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-09-09 14:06:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:00,416 INFO L225 Difference]: With dead ends: 602 [2019-09-09 14:06:00,416 INFO L226 Difference]: Without dead ends: 602 [2019-09-09 14:06:00,417 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 14:06:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-09-09 14:06:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2019-09-09 14:06:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-09-09 14:06:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 856 transitions. [2019-09-09 14:06:00,483 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 856 transitions. Word has length 132 [2019-09-09 14:06:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:00,484 INFO L475 AbstractCegarLoop]: Abstraction has 590 states and 856 transitions. [2019-09-09 14:06:00,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 14:06:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 856 transitions. [2019-09-09 14:06:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 14:06:00,487 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:00,488 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 14:06:00,488 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:00,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2048092750, now seen corresponding path program 1 times [2019-09-09 14:06:00,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:00,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:00,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:00,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:00,490 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:06:00,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:06:00,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 14:06:00,649 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:00,651 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 14:06:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 14:06:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 14:06:00,652 INFO L87 Difference]: Start difference. First operand 590 states and 856 transitions. Second operand 6 states. [2019-09-09 14:06:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:01,615 INFO L93 Difference]: Finished difference Result 900 states and 1263 transitions. [2019-09-09 14:06:01,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 14:06:01,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-09-09 14:06:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:01,625 INFO L225 Difference]: With dead ends: 900 [2019-09-09 14:06:01,625 INFO L226 Difference]: Without dead ends: 900 [2019-09-09 14:06:01,626 INFO L628 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 [2019-09-09 14:06:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2019-09-09 14:06:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 888. [2019-09-09 14:06:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-09-09 14:06:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1225 transitions. [2019-09-09 14:06:01,677 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1225 transitions. Word has length 134 [2019-09-09 14:06:01,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:01,684 INFO L475 AbstractCegarLoop]: Abstraction has 888 states and 1225 transitions. [2019-09-09 14:06:01,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 14:06:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1225 transitions. [2019-09-09 14:06:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-09 14:06:01,688 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:01,688 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 14:06:01,688 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2085474635, now seen corresponding path program 1 times [2019-09-09 14:06:01,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:01,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:01,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:01,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:01,693 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:06:01,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:06:01,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 14:06:01,861 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:01,862 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 14:06:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 14:06:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:06:01,863 INFO L87 Difference]: Start difference. First operand 888 states and 1225 transitions. Second operand 4 states. [2019-09-09 14:06:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:02,919 INFO L93 Difference]: Finished difference Result 1611 states and 2080 transitions. [2019-09-09 14:06:02,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 14:06:02,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-09-09 14:06:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:02,921 INFO L225 Difference]: With dead ends: 1611 [2019-09-09 14:06:02,921 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 14:06:02,922 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:06:02,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 14:06:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 14:06:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 14:06:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 14:06:02,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2019-09-09 14:06:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:02,923 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 14:06:02,923 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 14:06:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 14:06:02,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 14:06:02,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 02:06:02 BoogieIcfgContainer [2019-09-09 14:06:02,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 14:06:02,932 INFO L168 Benchmark]: Toolchain (without parser) took 8402.58 ms. Allocated memory was 133.2 MB in the beginning and 324.0 MB in the end (delta: 190.8 MB). Free memory was 88.0 MB in the beginning and 172.8 MB in the end (delta: -84.9 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:02,933 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 14:06:02,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.42 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 87.7 MB in the beginning and 158.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:02,935 INFO L168 Benchmark]: Boogie Preprocessor took 96.80 ms. Allocated memory is still 200.8 MB. Free memory was 158.5 MB in the beginning and 153.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:02,936 INFO L168 Benchmark]: RCFGBuilder took 1483.24 ms. Allocated memory was 200.8 MB in the beginning and 225.4 MB in the end (delta: 24.6 MB). Free memory was 153.4 MB in the beginning and 171.0 MB in the end (delta: -17.6 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:02,937 INFO L168 Benchmark]: TraceAbstraction took 6012.05 ms. Allocated memory was 225.4 MB in the beginning and 324.0 MB in the end (delta: 98.6 MB). Free memory was 171.0 MB in the beginning and 172.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:02,941 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.42 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 87.7 MB in the beginning and 158.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.80 ms. Allocated memory is still 200.8 MB. Free memory was 158.5 MB in the beginning and 153.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1483.24 ms. Allocated memory was 200.8 MB in the beginning and 225.4 MB in the end (delta: 24.6 MB). Free memory was 153.4 MB in the beginning and 171.0 MB in the end (delta: -17.6 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6012.05 ms. Allocated memory was 225.4 MB in the beginning and 324.0 MB in the end (delta: 98.6 MB). Free memory was 171.0 MB in the beginning and 172.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 160]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 140 SDtfs, 1535 SDslu, 128 SDs, 0 SdLazy, 2781 SolverSat, 608 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=888occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 167 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 461 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 205773 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 153/153 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...