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/loop-invgen/nest-if3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:52:19,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:52:19,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:52:19,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:52:19,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:52:19,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:52:19,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:52:19,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:52:19,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:52:19,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:52:19,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:52:19,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:52:19,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:52:19,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:52:19,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:52:19,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:52:19,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:52:19,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:52:19,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:52:19,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:52:19,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:52:19,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:52:19,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:52:19,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:52:19,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-03 20:52:19,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-03 20:52:19,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-03 20:52:19,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-03 20:52:19,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-03 20:52:19,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-03 20:52:19,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:52:19,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:52:19,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:52:19,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:52:19,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:52:19,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:52:19,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:52:19,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:52:19,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:52:19,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:52:19,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:52:19,760 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 [2019-09-03 20:52:19,775 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:52:19,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:52:19,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:52:19,776 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:52:19,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:52:19,776 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:52:19,777 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:52:19,777 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:52:19,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:52:19,777 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:52:19,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:52:19,778 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:52:19,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:52:19,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:52:19,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:52:19,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:52:19,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:52:19,779 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:52:19,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:52:19,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:52:19,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:52:19,780 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:52:19,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:52:19,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:52:19,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:52:19,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:52:19,781 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:52:19,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:52:19,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:52:19,781 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:52:19,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:52:19,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:52:19,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:52:19,825 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:52:19,827 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:52:19,827 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i [2019-09-03 20:52:19,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d84a65c/bc605a834bd8446e82231000ec5701da/FLAG673ac3a42 [2019-09-03 20:52:20,343 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:52:20,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i [2019-09-03 20:52:20,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d84a65c/bc605a834bd8446e82231000ec5701da/FLAG673ac3a42 [2019-09-03 20:52:20,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d84a65c/bc605a834bd8446e82231000ec5701da [2019-09-03 20:52:20,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:52:20,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:52:20,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:52:20,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:52:20,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:52:20,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:52:20" (1/1) ... [2019-09-03 20:52:20,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fa6ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:20, skipping insertion in model container [2019-09-03 20:52:20,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:52:20" (1/1) ... [2019-09-03 20:52:20,788 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:52:20,802 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:52:20,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:52:20,978 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:52:20,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:52:21,005 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:52:21,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21 WrapperNode [2019-09-03 20:52:21,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:52:21,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:52:21,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:52:21,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:52:21,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (1/1) ... [2019-09-03 20:52:21,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:52:21,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:52:21,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:52:21,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:52:21,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (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 [2019-09-03 20:52:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:52:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:52:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:52:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:52:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:52:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:52:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:52:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 20:52:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:52:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:52:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:52:21,357 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:52:21,359 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-03 20:52:21,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:52:21 BoogieIcfgContainer [2019-09-03 20:52:21,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:52:21,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:52:21,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:52:21,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:52:21,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:52:20" (1/3) ... [2019-09-03 20:52:21,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebd2da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:52:21, skipping insertion in model container [2019-09-03 20:52:21,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:52:21" (2/3) ... [2019-09-03 20:52:21,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebd2da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:52:21, skipping insertion in model container [2019-09-03 20:52:21,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:52:21" (3/3) ... [2019-09-03 20:52:21,388 INFO L109 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2019-09-03 20:52:21,408 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:52:21,426 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:52:21,453 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:52:21,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:52:21,480 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:52:21,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:52:21,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:52:21,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:52:21,481 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:52:21,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:52:21,481 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:52:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-03 20:52:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 20:52:21,508 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:52:21,509 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:52:21,510 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:52:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:52:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash -158879193, now seen corresponding path program 1 times [2019-09-03 20:52:21,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:52:21,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:21,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:52:21,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:52:21,553 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:52:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:52:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:52:21,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:52:21,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-03 20:52:21,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:52:21,703 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:52:21,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:52:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:52:21,716 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2019-09-03 20:52:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:52:21,859 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-09-03 20:52:21,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 20:52:21,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-09-03 20:52:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:52:21,869 INFO L225 Difference]: With dead ends: 28 [2019-09-03 20:52:21,869 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:52:21,873 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-03 20:52:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:52:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:52:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:52:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:52:21,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-03 20:52:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:52:21,901 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:52:21,902 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:52:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:52:21,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:52:21,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:52:21 BoogieIcfgContainer [2019-09-03 20:52:21,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:52:21,913 INFO L168 Benchmark]: Toolchain (without parser) took 1137.04 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 133.0 MB in the end (delta: -46.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:21,915 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:52:21,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.26 ms. Allocated memory is still 131.1 MB. Free memory was 86.5 MB in the beginning and 77.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:21,920 INFO L168 Benchmark]: Boogie Preprocessor took 103.72 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 77.2 MB in the beginning and 174.5 MB in the end (delta: -97.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:21,921 INFO L168 Benchmark]: RCFGBuilder took 251.51 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 161.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:21,922 INFO L168 Benchmark]: TraceAbstraction took 546.27 ms. Allocated memory is still 198.2 MB. Free memory was 161.1 MB in the beginning and 133.0 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:52:21,930 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.26 ms. Allocated memory is still 131.1 MB. Free memory was 86.5 MB in the beginning and 77.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.72 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 77.2 MB in the beginning and 174.5 MB in the end (delta: -97.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 251.51 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 161.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 546.27 ms. Allocated memory is still 198.2 MB. Free memory was 161.1 MB in the beginning and 133.0 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 25 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 21 SDslu, 71 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 377 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...