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/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:13:06,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:13:06,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:13:06,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:13:06,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:13:06,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:13:06,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:13:06,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:13:06,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:13:06,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:13:06,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:13:06,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-10 02:13:06,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:13:06,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:13:06,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:13:06,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:13:06,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:13:06,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:13:06,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:13:06,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:13:06,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:13:06,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:13:06,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:13:06,504 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 [2019-09-10 02:13:06,521 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:13:06,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:13:06,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:13:06,522 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:13:06,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:13:06,523 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:13:06,524 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:13:06,524 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:13:06,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:13:06,524 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:13:06,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:13:06,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:13:06,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:13:06,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:13:06,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:13:06,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:13:06,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:13:06,528 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:13:06,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:13:06,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:13:06,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:13:06,529 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:13:06,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:13:06,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:13:06,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:13:06,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:13:06,531 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:13:06,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:13:06,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:13:06,531 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:13:06,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:13:06,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:13:06,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:13:06,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:13:06,615 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:13:06,616 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-09-10 02:13:06,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071919014/ace21fea58d045b980375798684fc62a/FLAGf0d27f2aa [2019-09-10 02:13:07,174 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:13:07,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-09-10 02:13:07,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071919014/ace21fea58d045b980375798684fc62a/FLAGf0d27f2aa [2019-09-10 02:13:07,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071919014/ace21fea58d045b980375798684fc62a [2019-09-10 02:13:07,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:13:07,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:13:07,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:13:07,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:13:07,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:13:07,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:13:07" (1/1) ... [2019-09-10 02:13:07,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a503fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:07, skipping insertion in model container [2019-09-10 02:13:07,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:13:07" (1/1) ... [2019-09-10 02:13:07,565 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:13:07,594 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:13:07,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:13:07,956 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:13:08,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:13:08,053 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:13:08,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08 WrapperNode [2019-09-10 02:13:08,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:13:08,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:13:08,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:13:08,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:13:08,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (1/1) ... [2019-09-10 02:13:08,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:13:08,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:13:08,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:13:08,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:13:08,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (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 [2019-09-10 02:13:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:13:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:13:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:13:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:13:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-10 02:13:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-10 02:13:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:13:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:13:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:13:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:13:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:13:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:13:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:13:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:13:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:13:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:13:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:13:09,027 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:13:09,027 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 02:13:09,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:13:09 BoogieIcfgContainer [2019-09-10 02:13:09,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:13:09,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:13:09,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:13:09,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:13:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:13:07" (1/3) ... [2019-09-10 02:13:09,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a54835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:13:09, skipping insertion in model container [2019-09-10 02:13:09,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:08" (2/3) ... [2019-09-10 02:13:09,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a54835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:13:09, skipping insertion in model container [2019-09-10 02:13:09,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:13:09" (3/3) ... [2019-09-10 02:13:09,038 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-09-10 02:13:09,048 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:13:09,056 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:13:09,074 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:13:09,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:13:09,113 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:13:09,113 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:13:09,113 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:13:09,114 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:13:09,114 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:13:09,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:13:09,114 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:13:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-10 02:13:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-10 02:13:09,145 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:13:09,147 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:13:09,150 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:13:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:13:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1960518123, now seen corresponding path program 1 times [2019-09-10 02:13:09,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:13:09,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:09,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:13:09,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:09,208 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:13:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:13:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:13:09,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:13:09,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:13:09,497 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:13:09,502 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:13:09,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:13:09,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:13:09,520 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-09-10 02:13:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:13:09,591 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-09-10 02:13:09,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:13:09,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-09-10 02:13:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:13:09,603 INFO L225 Difference]: With dead ends: 31 [2019-09-10 02:13:09,603 INFO L226 Difference]: Without dead ends: 21 [2019-09-10 02:13:09,605 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:13:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-10 02:13:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-09-10 02:13:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-10 02:13:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-10 02:13:09,643 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2019-09-10 02:13:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:13:09,644 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-10 02:13:09,644 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:13:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-10 02:13:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 02:13:09,645 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:13:09,645 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:13:09,646 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:13:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:13:09,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1182240945, now seen corresponding path program 1 times [2019-09-10 02:13:09,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:13:09,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:09,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:13:09,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:09,649 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:13:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:13:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:13:09,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:13:09,860 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:13:09,862 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-10 02:13:09,864 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [9], [12], [16], [19], [22], [25], [26], [31], [32], [36], [37], [38] [2019-09-10 02:13:09,921 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:13:09,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:13:09,980 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:13:09,981 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-10 02:13:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:13:09,985 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:13:10,025 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:13:10,025 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:13:10,027 INFO L420 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-09-10 02:13:10,027 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:13:10,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:13:10,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-10 02:13:10,028 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:13:10,029 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:13:10,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:13:10,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:13:10,030 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 2 states. [2019-09-10 02:13:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:13:10,030 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:13:10,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:13:10,030 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-10 02:13:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:13:10,031 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:13:10,031 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:13:10,032 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:13:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:13:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:13:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:13:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:13:10,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-10 02:13:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:13:10,033 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:13:10,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:13:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:13:10,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:13:10,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:13:10 BoogieIcfgContainer [2019-09-10 02:13:10,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:13:10,042 INFO L168 Benchmark]: Toolchain (without parser) took 2490.18 ms. Allocated memory was 134.7 MB in the beginning and 256.9 MB in the end (delta: 122.2 MB). Free memory was 89.6 MB in the beginning and 211.8 MB in the end (delta: -122.1 MB). Peak memory consumption was 12.6 kB. Max. memory is 7.1 GB. [2019-09-10 02:13:10,042 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 134.7 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 02:13:10,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.69 ms. Allocated memory was 134.7 MB in the beginning and 217.1 MB in the end (delta: 82.3 MB). Free memory was 89.6 MB in the beginning and 194.8 MB in the end (delta: -105.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:10,044 INFO L168 Benchmark]: Boogie Preprocessor took 88.26 ms. Allocated memory is still 217.1 MB. Free memory was 194.8 MB in the beginning and 190.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:10,045 INFO L168 Benchmark]: RCFGBuilder took 885.94 ms. Allocated memory is still 217.1 MB. Free memory was 190.3 MB in the beginning and 117.3 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:10,046 INFO L168 Benchmark]: TraceAbstraction took 1009.19 ms. Allocated memory was 217.1 MB in the beginning and 256.9 MB in the end (delta: 39.8 MB). Free memory was 117.3 MB in the beginning and 211.8 MB in the end (delta: -94.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 02:13:10,050 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 134.7 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 502.69 ms. Allocated memory was 134.7 MB in the beginning and 217.1 MB in the end (delta: 82.3 MB). Free memory was 89.6 MB in the beginning and 194.8 MB in the end (delta: -105.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.26 ms. Allocated memory is still 217.1 MB. Free memory was 194.8 MB in the beginning and 190.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 885.94 ms. Allocated memory is still 217.1 MB. Free memory was 190.3 MB in the beginning and 117.3 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1009.19 ms. Allocated memory was 217.1 MB in the beginning and 256.9 MB in the end (delta: 39.8 MB). Free memory was 117.3 MB in the beginning and 211.8 MB in the end (delta: -94.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 19 SDslu, 30 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 11.625 AbsIntAvgWeakeningVarsNumRemoved, 0.0 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1019 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...