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/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:28:52,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:28:52,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:28:52,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:28:52,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:28:52,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:28:52,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:28:52,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:28:52,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:28:52,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:28:52,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:28:52,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:28:52,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:28:52,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:28:52,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:28:52,093 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 05:28:52,116 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:28:52,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:28:52,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:28:52,117 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:28:52,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:28:52,118 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:28:52,118 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:28:52,118 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:28:52,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:28:52,119 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:28:52,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:28:52,120 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:28:52,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:28:52,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:28:52,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:28:52,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:28:52,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:28:52,121 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:28:52,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:28:52,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:28:52,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:28:52,123 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:28:52,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:28:52,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:28:52,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:28:52,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:28:52,124 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:28:52,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:28:52,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:28:52,125 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:28:52,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:28:52,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:28:52,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:28:52,175 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:28:52,175 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:28:52,176 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-09-09 05:28:52,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006700e0a/7c70ee7c3bda41e88ba95d77f044d06f/FLAG7758e0143 [2019-09-09 05:28:52,692 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:28:52,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-09-09 05:28:52,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006700e0a/7c70ee7c3bda41e88ba95d77f044d06f/FLAG7758e0143 [2019-09-09 05:28:53,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006700e0a/7c70ee7c3bda41e88ba95d77f044d06f [2019-09-09 05:28:53,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:28:53,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:28:53,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:28:53,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:28:53,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:28:53,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e5ebd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53, skipping insertion in model container [2019-09-09 05:28:53,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,113 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:28:53,130 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:28:53,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:28:53,320 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:28:53,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:28:53,463 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:28:53,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53 WrapperNode [2019-09-09 05:28:53,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:28:53,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:28:53,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:28:53,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:28:53,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (1/1) ... [2019-09-09 05:28:53,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:28:53,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:28:53,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:28:53,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:28:53,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (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 05:28:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:28:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:28:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:28:53,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:28:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:28:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:28:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:28:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:28:53,875 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:28:53,876 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-09 05:28:53,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:28:53 BoogieIcfgContainer [2019-09-09 05:28:53,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:28:53,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:28:53,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:28:53,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:28:53,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:28:53" (1/3) ... [2019-09-09 05:28:53,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee21556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:28:53, skipping insertion in model container [2019-09-09 05:28:53,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:28:53" (2/3) ... [2019-09-09 05:28:53,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee21556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:28:53, skipping insertion in model container [2019-09-09 05:28:53,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:28:53" (3/3) ... [2019-09-09 05:28:53,885 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2019-09-09 05:28:53,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:28:53,899 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:28:53,915 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:28:53,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:28:53,943 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:28:53,943 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:28:53,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:28:53,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:28:53,944 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:28:53,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:28:53,944 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:28:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-09-09 05:28:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:28:53,970 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:53,971 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:28:53,973 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:53,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:53,979 INFO L82 PathProgramCache]: Analyzing trace with hash -825680561, now seen corresponding path program 1 times [2019-09-09 05:28:53,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:54,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:54,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:54,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:54,025 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:54,117 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 05:28:54,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:28:54,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:28:54,120 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:54,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:28:54,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:28:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:54,142 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-09-09 05:28:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:54,163 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-09-09 05:28:54,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:28:54,165 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-09 05:28:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:54,176 INFO L225 Difference]: With dead ends: 34 [2019-09-09 05:28:54,176 INFO L226 Difference]: Without dead ends: 29 [2019-09-09 05:28:54,178 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-09 05:28:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-09 05:28:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-09 05:28:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-09-09 05:28:54,224 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2019-09-09 05:28:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:54,224 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-09-09 05:28:54,225 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:28:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-09-09 05:28:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:28:54,226 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:54,226 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:28:54,226 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1876449348, now seen corresponding path program 1 times [2019-09-09 05:28:54,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:54,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:54,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:54,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:54,229 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:54,314 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 05:28:54,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:28:54,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:28:54,317 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:54,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:28:54,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:28:54,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:28:54,321 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2019-09-09 05:28:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:54,426 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2019-09-09 05:28:54,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:28:54,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-09-09 05:28:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:54,428 INFO L225 Difference]: With dead ends: 35 [2019-09-09 05:28:54,429 INFO L226 Difference]: Without dead ends: 35 [2019-09-09 05:28:54,431 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 05:28:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-09 05:28:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-09-09 05:28:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-09 05:28:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-09-09 05:28:54,444 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 15 [2019-09-09 05:28:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:54,445 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-09-09 05:28:54,445 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:28:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2019-09-09 05:28:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-09 05:28:54,447 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:28:54,447 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] [2019-09-09 05:28:54,447 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:28:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:54,449 INFO L82 PathProgramCache]: Analyzing trace with hash -684235798, now seen corresponding path program 1 times [2019-09-09 05:28:54,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:28:54,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:54,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:28:54,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:28:54,453 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:28:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:28:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-09 05:28:54,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:28:54,578 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:28:54,578 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2019-09-09 05:28:54,580 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [17], [21], [25], [32], [34], [37], [41], [45], [53], [79], [82], [84], [90], [91], [92], [94] [2019-09-09 05:28:54,619 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:28:54,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:28:54,689 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:28:54,691 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 28 variables. [2019-09-09 05:28:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:28:54,695 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:28:54,736 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:28:54,737 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:28:54,739 INFO L420 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-09-09 05:28:54,739 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:28:54,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:28:54,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-09 05:28:54,740 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:28:54,741 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:28:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:28:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:54,742 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 2 states. [2019-09-09 05:28:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:28:54,743 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:28:54,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:28:54,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-09-09 05:28:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:28:54,743 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:28:54,744 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:28:54,744 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:28:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:28:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:28:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:28:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:28:54,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-09-09 05:28:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:28:54,746 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:28:54,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:28:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:28:54,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:28:54,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:28:54 BoogieIcfgContainer [2019-09-09 05:28:54,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:28:54,754 INFO L168 Benchmark]: Toolchain (without parser) took 1660.73 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.7 MB in the beginning and 118.7 MB in the end (delta: -27.9 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:54,756 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-09 05:28:54,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.36 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.3 MB in the beginning and 178.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:54,758 INFO L168 Benchmark]: Boogie Preprocessor took 50.65 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 176.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:54,759 INFO L168 Benchmark]: RCFGBuilder took 361.91 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 160.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:54,760 INFO L168 Benchmark]: TraceAbstraction took 873.72 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 118.7 MB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:28:54,764 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.36 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 90.3 MB in the beginning and 178.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.65 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 176.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.91 ms. Allocated memory is still 201.9 MB. Free memory was 176.8 MB in the beginning and 160.4 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 873.72 ms. Allocated memory is still 201.9 MB. Free memory was 159.9 MB in the beginning and 118.7 MB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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, 34 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8875 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.3 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...