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/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:38,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:38,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:38,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:38,314 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 13:25:38,335 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:38,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:38,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:38,336 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:38,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:38,337 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:38,337 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:38,338 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:38,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:38,338 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:38,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:38,341 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:38,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:38,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:38,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:38,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:38,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:38,342 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:38,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:38,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:38,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:38,343 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:38,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:38,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:38,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:38,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:38,344 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:38,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:38,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:38,345 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:38,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:38,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:38,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:38,419 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:38,420 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:38,421 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-09-20 13:25:38,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e467f6f7e/6256574faf63479999775c70ab6a87c3/FLAG63ee1afd7 [2019-09-20 13:25:38,919 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:38,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-09-20 13:25:38,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e467f6f7e/6256574faf63479999775c70ab6a87c3/FLAG63ee1afd7 [2019-09-20 13:25:39,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e467f6f7e/6256574faf63479999775c70ab6a87c3 [2019-09-20 13:25:39,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:39,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:39,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:39,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:39,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:39,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf17af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39, skipping insertion in model container [2019-09-20 13:25:39,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,363 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:39,382 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:39,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:39,586 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:39,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:39,620 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:39,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39 WrapperNode [2019-09-20 13:25:39,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:39,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:39,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:39,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:39,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:39,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:39,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:39,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:39,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (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 13:25:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:39,985 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:39,986 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:25:39,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:39 BoogieIcfgContainer [2019-09-20 13:25:39,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:39,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:39,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:39,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:39,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:39" (1/3) ... [2019-09-20 13:25:39,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab865ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:39, skipping insertion in model container [2019-09-20 13:25:39,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (2/3) ... [2019-09-20 13:25:39,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab865ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:39, skipping insertion in model container [2019-09-20 13:25:39,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:39" (3/3) ... [2019-09-20 13:25:39,995 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2019-09-20 13:25:40,005 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:40,013 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-20 13:25:40,032 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-20 13:25:40,083 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:40,084 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:40,084 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:40,084 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:40,084 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:40,085 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:40,085 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:40,085 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-20 13:25:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 13:25:40,115 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:40,116 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:40,119 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1077508024, now seen corresponding path program 1 times [2019-09-20 13:25:40,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:40,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:40,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:40,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:40,183 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:40,305 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 13:25:40,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:40,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:25:40,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:40,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:25:40,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:25:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:25:40,336 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-09-20 13:25:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:40,449 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-09-20 13:25:40,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:40,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-09-20 13:25:40,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:40,467 INFO L225 Difference]: With dead ends: 24 [2019-09-20 13:25:40,467 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 13:25:40,471 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 13:25:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 13:25:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 13:25:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 13:25:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-20 13:25:40,514 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-09-20 13:25:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:40,514 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-20 13:25:40,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:25:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-20 13:25:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 13:25:40,516 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:40,516 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:40,517 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash 398186682, now seen corresponding path program 1 times [2019-09-20 13:25:40,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:40,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:40,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:40,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:40,525 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:40,605 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 13:25:40,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:40,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:25:40,606 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:40,607 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:25:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:25:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:25:40,608 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-09-20 13:25:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:40,654 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-09-20 13:25:40,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:25:40,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-09-20 13:25:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:40,656 INFO L225 Difference]: With dead ends: 17 [2019-09-20 13:25:40,656 INFO L226 Difference]: Without dead ends: 17 [2019-09-20 13:25:40,658 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 13:25:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-20 13:25:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-09-20 13:25:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 13:25:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-20 13:25:40,664 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2019-09-20 13:25:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:40,665 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-20 13:25:40,665 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:25:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-20 13:25:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:25:40,665 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:40,666 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:40,666 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:40,666 INFO L82 PathProgramCache]: Analyzing trace with hash 405408254, now seen corresponding path program 1 times [2019-09-20 13:25:40,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:40,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:40,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:40,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:40,668 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:40,743 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 13:25:40,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:40,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:40,744 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:40,745 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:40,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:40,746 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-20 13:25:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:40,874 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-09-20 13:25:40,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:25:40,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-20 13:25:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:40,875 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:25:40,875 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:40,876 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:25:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:40,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-20 13:25:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:40,877 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:40,877 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:40,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:40,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:40 BoogieIcfgContainer [2019-09-20 13:25:40,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:40,886 INFO L168 Benchmark]: Toolchain (without parser) took 1538.01 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 85.4 MB in the beginning and 109.1 MB in the end (delta: -23.7 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:40,887 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:40,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.06 ms. Allocated memory is still 130.0 MB. Free memory was 85.2 MB in the beginning and 75.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:40,889 INFO L168 Benchmark]: Boogie Preprocessor took 111.33 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 75.4 MB in the beginning and 173.3 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:40,889 INFO L168 Benchmark]: RCFGBuilder took 253.85 ms. Allocated memory is still 197.1 MB. Free memory was 173.3 MB in the beginning and 160.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:40,890 INFO L168 Benchmark]: TraceAbstraction took 894.56 ms. Allocated memory is still 197.1 MB. Free memory was 159.6 MB in the beginning and 109.1 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:40,894 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.06 ms. Allocated memory is still 130.0 MB. Free memory was 85.2 MB in the beginning and 75.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.33 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 75.4 MB in the beginning and 173.3 MB in the end (delta: -98.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.85 ms. Allocated memory is still 197.1 MB. Free memory was 173.3 MB in the beginning and 160.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 894.56 ms. Allocated memory is still 197.1 MB. Free memory was 159.6 MB in the beginning and 109.1 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 30]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 3 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 52 SDslu, 54 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...