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/ldv-regression/mutex_lock_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:26,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:26,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:26,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:26,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:26,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:26,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:26,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:26,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:26,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:26,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:26,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-20 13:28:26,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:26,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:26,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:26,717 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 [2019-09-20 13:28:26,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:26,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:26,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:26,734 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:26,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:26,735 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:26,735 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:26,735 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:26,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:26,736 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:26,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:26,737 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:26,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:26,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:26,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:26,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:26,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:26,738 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:26,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:26,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:26,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:26,738 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:26,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:26,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:26,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:26,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:26,739 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:26,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:26,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:26,740 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:26,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:26,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:26,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:26,798 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:26,798 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:26,799 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-09-20 13:28:26,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ea619c1/77799f42231840ebac9811bd1db10b42/FLAG0855d0936 [2019-09-20 13:28:27,290 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:27,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-09-20 13:28:27,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ea619c1/77799f42231840ebac9811bd1db10b42/FLAG0855d0936 [2019-09-20 13:28:27,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ea619c1/77799f42231840ebac9811bd1db10b42 [2019-09-20 13:28:27,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:27,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:27,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:27,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:27,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:27,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:27,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6487c26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27, skipping insertion in model container [2019-09-20 13:28:27,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:27,697 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:27,718 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:27,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:27,911 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:27,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:27,945 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:27,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27 WrapperNode [2019-09-20 13:28:27,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:27,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:27,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:27,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:28,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (1/1) ... [2019-09-20 13:28:28,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:28,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:28,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:28,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:28,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (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 [2019-09-20 13:28:28,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:28,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:28,120 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-09-20 13:28:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-09-20 13:28:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-09-20 13:28:28,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-09-20 13:28:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-09-20 13:28:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:28:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:28:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-09-20 13:28:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:28,343 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:28,344 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:28:28,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:28 BoogieIcfgContainer [2019-09-20 13:28:28,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:28,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:28,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:28,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:28,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:27" (1/3) ... [2019-09-20 13:28:28,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d5823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:28, skipping insertion in model container [2019-09-20 13:28:28,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:27" (2/3) ... [2019-09-20 13:28:28,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d5823e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:28, skipping insertion in model container [2019-09-20 13:28:28,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:28" (3/3) ... [2019-09-20 13:28:28,370 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2019-09-20 13:28:28,391 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:28,398 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:28,419 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:28,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:28,445 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:28,445 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:28,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:28,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:28,445 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:28,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:28,445 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-20 13:28:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:28:28,467 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:28,468 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:28,470 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash 589228543, now seen corresponding path program 1 times [2019-09-20 13:28:28,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:28,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:28,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:28,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:28,523 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:28,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:28,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:28:28,678 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:28,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:28:28,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:28:28,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:28:28,700 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-09-20 13:28:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:28,785 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2019-09-20 13:28:28,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:28:28,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-20 13:28:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:28,799 INFO L225 Difference]: With dead ends: 26 [2019-09-20 13:28:28,800 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 13:28:28,805 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:28:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 13:28:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 13:28:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 13:28:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-09-20 13:28:28,853 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2019-09-20 13:28:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:28,854 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-09-20 13:28:28,854 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:28:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-09-20 13:28:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:28:28,856 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:28,856 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:28,856 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:28,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1259031447, now seen corresponding path program 1 times [2019-09-20 13:28:28,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:28,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:28,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:28,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:28,867 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:28,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:28,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:28:28,998 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:29,000 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:28:29,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:28:29,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:29,001 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 7 states. [2019-09-20 13:28:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:29,098 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-09-20 13:28:29,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:28:29,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-09-20 13:28:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:29,101 INFO L225 Difference]: With dead ends: 15 [2019-09-20 13:28:29,101 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:29,102 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:28:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:29,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-20 13:28:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:29,105 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:29,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:28:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:29,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:29,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:29 BoogieIcfgContainer [2019-09-20 13:28:29,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:29,117 INFO L168 Benchmark]: Toolchain (without parser) took 1433.89 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 86.6 MB in the beginning and 120.0 MB in the end (delta: -33.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:29,119 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:29,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.95 ms. Allocated memory is still 131.1 MB. Free memory was 86.4 MB in the beginning and 76.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:29,124 INFO L168 Benchmark]: Boogie Preprocessor took 117.94 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 76.8 MB in the beginning and 174.5 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:29,126 INFO L168 Benchmark]: RCFGBuilder took 286.11 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 160.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:29,128 INFO L168 Benchmark]: TraceAbstraction took 761.22 ms. Allocated memory is still 198.2 MB. Free memory was 160.7 MB in the beginning and 120.0 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:29,139 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 131.1 MB. Free memory was 105.2 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.95 ms. Allocated memory is still 131.1 MB. Free memory was 86.4 MB in the beginning and 76.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.94 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 76.8 MB in the beginning and 174.5 MB in the end (delta: -97.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.11 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 160.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 761.22 ms. Allocated memory is still 198.2 MB. Free memory was 160.7 MB in the beginning and 120.0 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 6 procedures, 29 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 4 SDslu, 96 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...