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/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:24:00,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:24:00,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:24:00,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:24:00,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:24:00,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:24:00,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:24:00,099 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 [2019-10-03 02:24:00,116 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:24:00,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:24:00,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:24:00,117 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:24:00,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:24:00,118 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:24:00,118 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:24:00,118 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:24:00,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:24:00,119 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:24:00,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:24:00,120 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:24:00,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:24:00,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:24:00,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:24:00,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:24:00,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:24:00,121 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:24:00,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:24:00,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:24:00,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:24:00,122 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:24:00,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:24:00,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:24:00,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:24:00,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:24:00,123 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:24:00,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:24:00,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:24:00,124 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:24:00,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:24:00,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:24:00,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:24:00,176 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:24:00,177 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:24:00,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2019-10-03 02:24:00,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155e49655/270c298b4476409685789c5aa011a720/FLAG882142c93 [2019-10-03 02:24:00,887 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:24:00,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2019-10-03 02:24:00,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155e49655/270c298b4476409685789c5aa011a720/FLAG882142c93 [2019-10-03 02:24:01,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155e49655/270c298b4476409685789c5aa011a720 [2019-10-03 02:24:01,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:24:01,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:24:01,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:01,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:24:01,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:24:01,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4975dbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01, skipping insertion in model container [2019-10-03 02:24:01,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,255 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:24:01,274 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:24:01,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:01,622 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:24:01,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:01,681 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:24:01,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01 WrapperNode [2019-10-03 02:24:01,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:01,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:24:01,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:24:01,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:24:01,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (1/1) ... [2019-10-03 02:24:01,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:24:01,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:24:01,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:24:01,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:24:01,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (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 [2019-10-03 02:24:01,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:24:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:24:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-10-03 02:24:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:24:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:24:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:24:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-03 02:24:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-10-03 02:24:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:24:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:24:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:24:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:24:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:24:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:24:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:24:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:24:02,256 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:24:02,256 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 02:24:02,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:02 BoogieIcfgContainer [2019-10-03 02:24:02,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:24:02,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:24:02,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:24:02,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:24:02,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:24:01" (1/3) ... [2019-10-03 02:24:02,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f050f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:02, skipping insertion in model container [2019-10-03 02:24:02,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:01" (2/3) ... [2019-10-03 02:24:02,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f050f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:02, skipping insertion in model container [2019-10-03 02:24:02,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:02" (3/3) ... [2019-10-03 02:24:02,279 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2019-10-03 02:24:02,305 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:24:02,326 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:24:02,354 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:24:02,424 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:24:02,425 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:24:02,425 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:24:02,425 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:24:02,425 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:24:02,425 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:24:02,425 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:24:02,426 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:24:02,446 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-03 02:24:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-03 02:24:02,467 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:02,469 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:02,472 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash 521841741, now seen corresponding path program 1 times [2019-10-03 02:24:02,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:02,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:02,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:02,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:02,536 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:02,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:02,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:24:02,722 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:02,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:24:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:24:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:24:02,748 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-10-03 02:24:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:02,818 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-10-03 02:24:02,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:24:02,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-03 02:24:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:02,833 INFO L225 Difference]: With dead ends: 22 [2019-10-03 02:24:02,833 INFO L226 Difference]: Without dead ends: 18 [2019-10-03 02:24:02,836 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:24:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-03 02:24:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-03 02:24:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-03 02:24:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-03 02:24:02,874 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2019-10-03 02:24:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:02,875 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-03 02:24:02,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:24:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-03 02:24:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-03 02:24:02,876 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:02,876 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:02,877 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1019657549, now seen corresponding path program 1 times [2019-10-03 02:24:02,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:02,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:02,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:02,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:02,885 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:03,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:03,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 02:24:03,064 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:03,066 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 02:24:03,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 02:24:03,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:24:03,068 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-10-03 02:24:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:03,132 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-10-03 02:24:03,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:24:03,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-10-03 02:24:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:03,134 INFO L225 Difference]: With dead ends: 16 [2019-10-03 02:24:03,134 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:24:03,135 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:24:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:24:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:24:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:24:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:24:03,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-03 02:24:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:03,137 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:24:03,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 02:24:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:24:03,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:24:03,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:24:03 BoogieIcfgContainer [2019-10-03 02:24:03,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:24:03,148 INFO L168 Benchmark]: Toolchain (without parser) took 1914.15 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 86.9 MB in the beginning and 124.1 MB in the end (delta: -37.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:03,149 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 137.4 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:24:03,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.22 ms. Allocated memory is still 137.4 MB. Free memory was 86.7 MB in the beginning and 77.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:03,154 INFO L168 Benchmark]: Boogie Preprocessor took 181.43 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 77.1 MB in the beginning and 178.4 MB in the end (delta: -101.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:03,155 INFO L168 Benchmark]: RCFGBuilder took 393.98 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 163.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:03,156 INFO L168 Benchmark]: TraceAbstraction took 884.95 ms. Allocated memory is still 201.3 MB. Free memory was 162.8 MB in the beginning and 124.1 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:03,161 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 137.4 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 448.22 ms. Allocated memory is still 137.4 MB. Free memory was 86.7 MB in the beginning and 77.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.43 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 77.1 MB in the beginning and 178.4 MB in the end (delta: -101.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.98 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 163.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 884.95 ms. Allocated memory is still 201.3 MB. Free memory was 162.8 MB in the beginning and 124.1 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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, 22 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 17 SDslu, 74 SDs, 0 SdLazy, 13 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 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...