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-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:03,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:03,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:03,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:26:03,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:26:03,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:26:03,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:26:03,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:26:03,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:26:03,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:26:03,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:26:03,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:26:03,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:26:03,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:26:03,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:26:03,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:26:03,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:26:03,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:26:03,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:26:03,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:26:03,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:26:03,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:26:03,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:26:03,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:26:03,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:26:03,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:26:03,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:26:03,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:26:03,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:26:03,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:03,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:03,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:03,726 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:03,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:03,727 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:03,727 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:03,727 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:03,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:03,728 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:03,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:03,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:03,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:03,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:03,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:03,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:03,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:03,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:03,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:03,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:03,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:03,731 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:03,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:03,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:03,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:03,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:03,732 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:03,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:03,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:03,732 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:03,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:03,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:03,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:03,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:03,777 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:03,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-09-20 13:26:03,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7fdabe68/ee1094e6224546c8a9c964fb60b3b3d9/FLAG4fe150211 [2019-09-20 13:26:04,225 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:04,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-09-20 13:26:04,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7fdabe68/ee1094e6224546c8a9c964fb60b3b3d9/FLAG4fe150211 [2019-09-20 13:26:04,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7fdabe68/ee1094e6224546c8a9c964fb60b3b3d9 [2019-09-20 13:26:04,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:04,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:04,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:04,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:04,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:04,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181f005e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04, skipping insertion in model container [2019-09-20 13:26:04,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,631 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:04,649 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:04,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:04,848 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:04,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:04,877 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:04,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04 WrapperNode [2019-09-20 13:26:04,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:04,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:04,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:04,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:04,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... [2019-09-20 13:26:04,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:04,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:04,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:04,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:04,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:05,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:05,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:05,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:26:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:26:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:05,242 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:05,242 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:26:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:05 BoogieIcfgContainer [2019-09-20 13:26:05,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:05,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:05,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:05,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:04" (1/3) ... [2019-09-20 13:26:05,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd75718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:05, skipping insertion in model container [2019-09-20 13:26:05,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:04" (2/3) ... [2019-09-20 13:26:05,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd75718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:05, skipping insertion in model container [2019-09-20 13:26:05,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:05" (3/3) ... [2019-09-20 13:26:05,251 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2019-09-20 13:26:05,261 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:05,268 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:05,284 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:05,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:05,307 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:05,307 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:05,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:05,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:05,307 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:05,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:05,307 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-20 13:26:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:26:05,327 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:05,328 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:05,329 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash 964689295, now seen corresponding path program 1 times [2019-09-20 13:26:05,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:05,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:05,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:05,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:05,377 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:05,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:05,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:26:05,549 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:05,559 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:26:05,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:26:05,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:26:05,604 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-09-20 13:26:05,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:05,687 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-09-20 13:26:05,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:26:05,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-09-20 13:26:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:05,699 INFO L225 Difference]: With dead ends: 27 [2019-09-20 13:26:05,699 INFO L226 Difference]: Without dead ends: 20 [2019-09-20 13:26:05,701 INFO L636 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 [2019-09-20 13:26:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-20 13:26:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-09-20 13:26:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-20 13:26:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-09-20 13:26:05,738 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-09-20 13:26:05,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:05,739 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-09-20 13:26:05,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:26:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-09-20 13:26:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:26:05,740 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:05,740 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:05,740 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:05,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2096975293, now seen corresponding path program 1 times [2019-09-20 13:26:05,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:05,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:05,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:05,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:05,746 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:06,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:06,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:26:06,104 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:06,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:26:06,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:26:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:26:06,109 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-09-20 13:26:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:06,253 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-09-20 13:26:06,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:26:06,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-20 13:26:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:06,255 INFO L225 Difference]: With dead ends: 18 [2019-09-20 13:26:06,255 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:06,256 INFO L636 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 [2019-09-20 13:26:06,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:06,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-20 13:26:06,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:06,258 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:06,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:26:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:06,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:06,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:06 BoogieIcfgContainer [2019-09-20 13:26:06,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:06,267 INFO L168 Benchmark]: Toolchain (without parser) took 1650.82 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 86.8 MB in the beginning and 115.0 MB in the end (delta: -28.2 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:06,268 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory is still 104.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:26:06,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.39 ms. Allocated memory is still 131.1 MB. Free memory was 86.8 MB in the beginning and 77.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:06,270 INFO L168 Benchmark]: Boogie Preprocessor took 111.94 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 77.1 MB in the beginning and 173.9 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:06,271 INFO L168 Benchmark]: RCFGBuilder took 253.33 ms. Allocated memory is still 198.2 MB. Free memory was 173.9 MB in the beginning and 161.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:06,272 INFO L168 Benchmark]: TraceAbstraction took 1019.65 ms. Allocated memory is still 198.2 MB. Free memory was 161.7 MB in the beginning and 115.0 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:06,275 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory is still 104.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.39 ms. Allocated memory is still 131.1 MB. Free memory was 86.8 MB in the beginning and 77.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.94 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 77.1 MB in the beginning and 173.9 MB in the end (delta: -96.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.33 ms. Allocated memory is still 198.2 MB. Free memory was 173.9 MB in the beginning and 161.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1019.65 ms. Allocated memory is still 198.2 MB. Free memory was 161.7 MB in the beginning and 115.0 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: 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 3 procedures, 19 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 21 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...