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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:06:05,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:06:05,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:06:05,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:06:05,842 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 14:06:05,856 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:06:05,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:06:05,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:06:05,857 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:06:05,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:06:05,858 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:06:05,858 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:06:05,859 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:06:05,859 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:06:05,859 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:06:05,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:06:05,860 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:06:05,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:06:05,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:06:05,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:06:05,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:06:05,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:06:05,861 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:06:05,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:06:05,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:06:05,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:06:05,862 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:06:05,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:06:05,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:06:05,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:06:05,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:06:05,863 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:06:05,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:06:05,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:06:05,864 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:06:05,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:06:05,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:06:05,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:06:05,910 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:06:05,913 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:06:05,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2019-09-09 14:06:05,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a53e94f/8e86a686aac444da8ada2f8b181aaa52/FLAGc5a922d5a [2019-09-09 14:06:06,546 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:06:06,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2019-09-09 14:06:06,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a53e94f/8e86a686aac444da8ada2f8b181aaa52/FLAGc5a922d5a [2019-09-09 14:06:06,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a53e94f/8e86a686aac444da8ada2f8b181aaa52 [2019-09-09 14:06:06,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:06:06,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:06:06,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:06:06,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:06:06,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:06:06,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:06:06" (1/1) ... [2019-09-09 14:06:06,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0885a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:06, skipping insertion in model container [2019-09-09 14:06:06,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:06:06" (1/1) ... [2019-09-09 14:06:06,794 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:06:06,851 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:06:07,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:06:07,427 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:06:07,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:06:07,597 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:06:07,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07 WrapperNode [2019-09-09 14:06:07,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:06:07,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:06:07,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:06:07,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:06:07,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (1/1) ... [2019-09-09 14:06:07,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:06:07,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:06:07,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:06:07,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:06:07,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (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 14:06:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:06:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:06:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:06:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:06:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:06:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:06:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:06:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:06:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:06:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:06:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:06:09,283 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:06:09,283 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:06:09,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:06:09 BoogieIcfgContainer [2019-09-09 14:06:09,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:06:09,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:06:09,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:06:09,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:06:09,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:06:06" (1/3) ... [2019-09-09 14:06:09,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c03cdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:06:09, skipping insertion in model container [2019-09-09 14:06:09,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:07" (2/3) ... [2019-09-09 14:06:09,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c03cdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:06:09, skipping insertion in model container [2019-09-09 14:06:09,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:06:09" (3/3) ... [2019-09-09 14:06:09,294 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2019-09-09 14:06:09,305 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:06:09,315 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:06:09,334 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:06:09,364 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:06:09,364 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:06:09,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:06:09,365 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:06:09,365 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:06:09,365 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:06:09,366 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:06:09,366 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:06:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:06:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-09 14:06:09,414 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:09,415 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] [2019-09-09 14:06:09,418 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1307500665, now seen corresponding path program 1 times [2019-09-09 14:06:09,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:09,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:09,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:09,488 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:09,782 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 14:06:09,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:06:09,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 14:06:09,785 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:09,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 14:06:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 14:06:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:06:09,810 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-09-09 14:06:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:10,759 INFO L93 Difference]: Finished difference Result 362 states and 538 transitions. [2019-09-09 14:06:10,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 14:06:10,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-09-09 14:06:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:10,783 INFO L225 Difference]: With dead ends: 362 [2019-09-09 14:06:10,783 INFO L226 Difference]: Without dead ends: 294 [2019-09-09 14:06:10,787 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:06:10,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-09 14:06:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-09-09 14:06:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:06:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2019-09-09 14:06:10,904 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 30 [2019-09-09 14:06:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:10,905 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2019-09-09 14:06:10,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 14:06:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2019-09-09 14:06:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-09 14:06:10,912 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:10,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:10,914 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1110741703, now seen corresponding path program 1 times [2019-09-09 14:06:10,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:10,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:10,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:10,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:10,918 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:06:11,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:06:11,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 14:06:11,165 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:11,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 14:06:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 14:06:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 14:06:11,168 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand 6 states. [2019-09-09 14:06:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:12,120 INFO L93 Difference]: Finished difference Result 453 states and 620 transitions. [2019-09-09 14:06:12,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 14:06:12,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-09-09 14:06:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:12,125 INFO L225 Difference]: With dead ends: 453 [2019-09-09 14:06:12,126 INFO L226 Difference]: Without dead ends: 453 [2019-09-09 14:06:12,127 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 14:06:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-09-09 14:06:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-09-09 14:06:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-09-09 14:06:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 606 transitions. [2019-09-09 14:06:12,158 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 606 transitions. Word has length 99 [2019-09-09 14:06:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:12,159 INFO L475 AbstractCegarLoop]: Abstraction has 445 states and 606 transitions. [2019-09-09 14:06:12,159 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 14:06:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 606 transitions. [2019-09-09 14:06:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-09 14:06:12,161 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:12,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:12,162 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:12,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:12,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2136138939, now seen corresponding path program 1 times [2019-09-09 14:06:12,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:12,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:12,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:12,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:12,164 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:06:12,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:06:12,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 14:06:12,261 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:12,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 14:06:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 14:06:12,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:06:12,263 INFO L87 Difference]: Start difference. First operand 445 states and 606 transitions. Second operand 4 states. [2019-09-09 14:06:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:13,327 INFO L93 Difference]: Finished difference Result 1166 states and 1442 transitions. [2019-09-09 14:06:13,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 14:06:13,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-09-09 14:06:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:13,330 INFO L225 Difference]: With dead ends: 1166 [2019-09-09 14:06:13,330 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 14:06:13,331 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 14:06:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 14:06:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 14:06:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 14:06:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 14:06:13,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2019-09-09 14:06:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:13,332 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 14:06:13,332 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 14:06:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 14:06:13,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 14:06:13,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 02:06:13 BoogieIcfgContainer [2019-09-09 14:06:13,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 14:06:13,339 INFO L168 Benchmark]: Toolchain (without parser) took 6562.95 ms. Allocated memory was 133.2 MB in the beginning and 320.9 MB in the end (delta: 187.7 MB). Free memory was 87.9 MB in the beginning and 219.2 MB in the end (delta: -131.3 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:13,340 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 14:06:13,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.44 ms. Allocated memory was 133.2 MB in the beginning and 202.9 MB in the end (delta: 69.7 MB). Free memory was 87.7 MB in the beginning and 166.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:13,342 INFO L168 Benchmark]: Boogie Preprocessor took 119.90 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 161.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:13,343 INFO L168 Benchmark]: RCFGBuilder took 1566.40 ms. Allocated memory was 202.9 MB in the beginning and 228.1 MB in the end (delta: 25.2 MB). Free memory was 161.5 MB in the beginning and 180.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:13,344 INFO L168 Benchmark]: TraceAbstraction took 4050.46 ms. Allocated memory was 228.1 MB in the beginning and 320.9 MB in the end (delta: 92.8 MB). Free memory was 180.2 MB in the beginning and 219.2 MB in the end (delta: -39.0 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2019-09-09 14:06:13,348 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 821.44 ms. Allocated memory was 133.2 MB in the beginning and 202.9 MB in the end (delta: 69.7 MB). Free memory was 87.7 MB in the beginning and 166.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.90 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 161.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1566.40 ms. Allocated memory was 202.9 MB in the beginning and 228.1 MB in the end (delta: 25.2 MB). Free memory was 161.5 MB in the beginning and 180.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4050.46 ms. Allocated memory was 228.1 MB in the beginning and 320.9 MB in the end (delta: 92.8 MB). Free memory was 180.2 MB in the beginning and 219.2 MB in the end (delta: -39.0 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: 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, 3.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 105 SDtfs, 986 SDslu, 61 SDs, 0 SdLazy, 1719 SolverSat, 501 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=2, 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, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 76490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 46/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...