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/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:46:31,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:46:31,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:46:31,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:46:31,541 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 01:46:31,555 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:46:31,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:46:31,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:46:31,556 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:46:31,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:46:31,557 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:46:31,557 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:46:31,557 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:46:31,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:46:31,558 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:46:31,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:46:31,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:46:31,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:46:31,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:46:31,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:46:31,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:46:31,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:46:31,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:46:31,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:46:31,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:46:31,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:46:31,560 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:46:31,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:46:31,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:46:31,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:46:31,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:46:31,561 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:46:31,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:46:31,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:46:31,562 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:46:31,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:46:31,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:46:31,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:46:31,606 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:46:31,606 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:46:31,607 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2019-09-10 01:46:31,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd004630/b1105b62f27c4c529385f0e0c16acc60/FLAG37d2415ee [2019-09-10 01:46:32,081 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:46:32,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-2.c [2019-09-10 01:46:32,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd004630/b1105b62f27c4c529385f0e0c16acc60/FLAG37d2415ee [2019-09-10 01:46:32,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd004630/b1105b62f27c4c529385f0e0c16acc60 [2019-09-10 01:46:32,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:46:32,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:46:32,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:32,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:46:32,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:46:32,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32, skipping insertion in model container [2019-09-10 01:46:32,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,462 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:46:32,477 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:46:32,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:32,643 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:46:32,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:32,679 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:46:32,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32 WrapperNode [2019-09-10 01:46:32,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:32,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:46:32,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:46:32,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:46:32,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (1/1) ... [2019-09-10 01:46:32,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:46:32,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:46:32,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:46:32,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:46:32,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (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 01:46:32,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:46:32,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:46:32,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:46:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:46:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:46:33,054 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:46:33,054 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:46:33,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:33 BoogieIcfgContainer [2019-09-10 01:46:33,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:46:33,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:46:33,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:46:33,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:46:33,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:46:32" (1/3) ... [2019-09-10 01:46:33,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dacbc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:33, skipping insertion in model container [2019-09-10 01:46:33,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:32" (2/3) ... [2019-09-10 01:46:33,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dacbc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:33, skipping insertion in model container [2019-09-10 01:46:33,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:33" (3/3) ... [2019-09-10 01:46:33,064 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2019-09-10 01:46:33,074 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:46:33,086 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:46:33,133 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:46:33,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:46:33,172 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:46:33,172 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:46:33,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:46:33,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:46:33,172 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:46:33,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:46:33,173 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:46:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-10 01:46:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:46:33,197 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:33,198 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:33,201 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:33,207 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-09-10 01:46:33,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:33,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:33,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,269 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:33,415 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 01:46:33,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:33,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:46:33,419 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:33,424 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:46:33,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:46:33,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:46:33,444 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-09-10 01:46:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:33,543 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-09-10 01:46:33,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:46:33,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-10 01:46:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:33,561 INFO L225 Difference]: With dead ends: 25 [2019-09-10 01:46:33,561 INFO L226 Difference]: Without dead ends: 21 [2019-09-10 01:46:33,566 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:46:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-10 01:46:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2019-09-10 01:46:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-10 01:46:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-10 01:46:33,618 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-09-10 01:46:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:33,618 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-10 01:46:33,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:46:33,619 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-10 01:46:33,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:46:33,620 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:33,620 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:33,622 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:33,623 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-09-10 01:46:33,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:33,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:33,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,625 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:33,759 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 01:46:33,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:33,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:46:33,760 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:33,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:46:33,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:46:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:46:33,763 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2019-09-10 01:46:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:33,857 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-09-10 01:46:33,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:46:33,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-09-10 01:46:33,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:33,858 INFO L225 Difference]: With dead ends: 20 [2019-09-10 01:46:33,858 INFO L226 Difference]: Without dead ends: 14 [2019-09-10 01:46:33,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-10 01:46:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-10 01:46:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-10 01:46:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-10 01:46:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-09-10 01:46:33,863 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-09-10 01:46:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:33,864 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-09-10 01:46:33,864 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:46:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-09-10 01:46:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:46:33,865 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:33,865 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:33,865 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2019-09-10 01:46:33,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:33,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:33,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:33,870 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:34,038 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 01:46:34,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:34,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 01:46:34,039 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:34,040 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 01:46:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 01:46:34,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:46:34,040 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 8 states. [2019-09-10 01:46:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:34,120 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-09-10 01:46:34,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:46:34,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-09-10 01:46:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:34,121 INFO L225 Difference]: With dead ends: 12 [2019-09-10 01:46:34,121 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:46:34,122 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-10 01:46:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:46:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:46:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:46:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:46:34,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-10 01:46:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:34,123 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:46:34,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 01:46:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:46:34,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:46:34,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:46:34 BoogieIcfgContainer [2019-09-10 01:46:34,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:46:34,132 INFO L168 Benchmark]: Toolchain (without parser) took 1683.90 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 89.7 MB in the beginning and 98.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:34,133 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:46:34,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.90 ms. Allocated memory is still 133.2 MB. Free memory was 89.5 MB in the beginning and 79.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:34,135 INFO L168 Benchmark]: Boogie Preprocessor took 116.70 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 79.8 MB in the beginning and 176.7 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:34,136 INFO L168 Benchmark]: RCFGBuilder took 259.30 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 162.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:34,137 INFO L168 Benchmark]: TraceAbstraction took 1071.91 ms. Allocated memory is still 200.3 MB. Free memory was 162.8 MB in the beginning and 98.1 MB in the end (delta: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:34,141 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.90 ms. Allocated memory is still 133.2 MB. Free memory was 89.5 MB in the beginning and 79.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.70 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 79.8 MB in the beginning and 176.7 MB in the end (delta: -96.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 259.30 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 162.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1071.91 ms. Allocated memory is still 200.3 MB. Free memory was 162.8 MB in the beginning and 98.1 MB in the end (delta: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 32 SDslu, 71 SDs, 0 SdLazy, 75 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1320 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...