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/array-crafted/bAnd5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:35,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:35,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:35,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:26:35,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:26:35,603 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:35,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:35,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:35,604 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:35,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:35,605 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:35,605 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:35,605 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:35,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:35,606 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:35,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:35,607 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:35,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:35,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:35,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:35,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:35,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:35,608 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:35,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:35,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:35,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:35,609 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:35,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:35,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:35,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:35,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:35,610 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:35,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:35,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:35,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:35,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:35,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:35,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:35,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:35,687 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:35,688 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd5.i [2019-09-20 13:26:35,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69d4b990/5c0d8254a0a04c42870842b7c449b019/FLAG1f0146e5b [2019-09-20 13:26:36,207 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:36,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bAnd5.i [2019-09-20 13:26:36,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69d4b990/5c0d8254a0a04c42870842b7c449b019/FLAG1f0146e5b [2019-09-20 13:26:36,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69d4b990/5c0d8254a0a04c42870842b7c449b019 [2019-09-20 13:26:36,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:36,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:36,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:36,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:36,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:36,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:36" (1/1) ... [2019-09-20 13:26:36,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e46397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:36, skipping insertion in model container [2019-09-20 13:26:36,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:36" (1/1) ... [2019-09-20 13:26:36,607 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:36,628 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:36,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:36,915 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:37,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:37,072 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:37,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37 WrapperNode [2019-09-20 13:26:37,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:37,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:37,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:37,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:37,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... [2019-09-20 13:26:37,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:37,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:37,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:37,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:37,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2019-09-20 13:26:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:26:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2019-09-20 13:26:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:26:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:26:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:26:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:26:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:37,540 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:37,541 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:26:37,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:37 BoogieIcfgContainer [2019-09-20 13:26:37,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:37,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:37,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:37,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:37,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:36" (1/3) ... [2019-09-20 13:26:37,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c73e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:37, skipping insertion in model container [2019-09-20 13:26:37,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:37" (2/3) ... [2019-09-20 13:26:37,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c73e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:37, skipping insertion in model container [2019-09-20 13:26:37,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:37" (3/3) ... [2019-09-20 13:26:37,550 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2019-09-20 13:26:37,558 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:37,565 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:37,582 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:37,606 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:37,606 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:37,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:37,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:37,606 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:37,606 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:37,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:37,607 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-20 13:26:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 13:26:37,630 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:37,631 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:37,633 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2019-09-20 13:26:37,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:37,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:37,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:37,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:37,691 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:26:37,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:37,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:26:37,813 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:37,818 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:26:37,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:26:37,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:37,835 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-20 13:26:37,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:37,850 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-20 13:26:37,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:26:37,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-09-20 13:26:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:37,861 INFO L225 Difference]: With dead ends: 33 [2019-09-20 13:26:37,861 INFO L226 Difference]: Without dead ends: 27 [2019-09-20 13:26:37,863 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:37,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-20 13:26:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-20 13:26:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-20 13:26:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-20 13:26:37,904 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-09-20 13:26:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:37,905 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-20 13:26:37,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:26:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-20 13:26:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 13:26:37,907 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:37,908 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:37,908 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2019-09-20 13:26:37,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:37,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:37,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:37,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:37,911 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:26:38,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:38,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:26:38,031 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:38,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:26:38,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:26:38,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:26:38,034 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-09-20 13:26:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:38,095 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-09-20 13:26:38,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:26:38,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-09-20 13:26:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:38,098 INFO L225 Difference]: With dead ends: 29 [2019-09-20 13:26:38,098 INFO L226 Difference]: Without dead ends: 29 [2019-09-20 13:26:38,099 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:26:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-20 13:26:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-09-20 13:26:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-20 13:26:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-20 13:26:38,105 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-09-20 13:26:38,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:38,106 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-20 13:26:38,106 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:26:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-20 13:26:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-20 13:26:38,109 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:38,109 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:38,109 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2019-09-20 13:26:38,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:38,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:38,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:38,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:38,112 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-20 13:26:38,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:38,248 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:26:38,249 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-09-20 13:26:38,251 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [8], [16], [17], [21], [24], [30], [32], [34], [39], [41], [47], [55], [57], [60], [61], [72], [73], [74], [76], [77], [78], [79], [80], [81] [2019-09-20 13:26:38,287 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:26:38,287 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:26:38,349 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:26:38,351 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 31 variables. [2019-09-20 13:26:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:38,354 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:26:38,396 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-09-20 13:26:38,396 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:26:38,413 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-09-20 13:26:38,413 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:26:38,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:26:38,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-20 13:26:38,414 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:38,415 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:26:38,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:26:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:26:38,416 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-09-20 13:26:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:38,420 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-20 13:26:38,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:26:38,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-09-20 13:26:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:38,421 INFO L225 Difference]: With dead ends: 7 [2019-09-20 13:26:38,421 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:38,422 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:26:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:38,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:38,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-09-20 13:26:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:38,423 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:38,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:26:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:38,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:38,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:38 BoogieIcfgContainer [2019-09-20 13:26:38,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:38,432 INFO L168 Benchmark]: Toolchain (without parser) took 1842.03 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 85.6 MB in the beginning and 106.4 MB in the end (delta: -20.8 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:38,434 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:26:38,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.38 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 85.4 MB in the beginning and 175.0 MB in the end (delta: -89.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:38,439 INFO L168 Benchmark]: Boogie Preprocessor took 42.79 ms. Allocated memory is still 198.7 MB. Free memory was 175.0 MB in the beginning and 172.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:38,439 INFO L168 Benchmark]: RCFGBuilder took 425.81 ms. Allocated memory is still 198.7 MB. Free memory was 172.9 MB in the beginning and 156.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:38,441 INFO L168 Benchmark]: TraceAbstraction took 885.65 ms. Allocated memory is still 198.7 MB. Free memory was 156.3 MB in the beginning and 106.4 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:38,452 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 482.38 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 85.4 MB in the beginning and 175.0 MB in the end (delta: -89.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.79 ms. Allocated memory is still 198.7 MB. Free memory was 175.0 MB in the beginning and 172.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.81 ms. Allocated memory is still 198.7 MB. Free memory was 172.9 MB in the beginning and 156.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 885.65 ms. Allocated memory is still 198.7 MB. Free memory was 156.3 MB in the beginning and 106.4 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 73 SDtfs, 4 SDslu, 21 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0.9607843137254901 AbsIntWeakeningRatio, 1.411764705882353 AbsIntAvgWeakeningVarsNumRemoved, 0.47058823529411764 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 38/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...