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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:23:44,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:23:44,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:23:44,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 16:23:44,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:23:44,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:23:44,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:23:44,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 16:23:44,491 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:23:44,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:23:44,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:23:44,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:23:44,495 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:23:44,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:23:44,495 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:23:44,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:23:44,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:23:44,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:23:44,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:23:44,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:23:44,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:23:44,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:23:44,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:23:44,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:23:44,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:23:44,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:23:44,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:23:44,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:23:44,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:23:44,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:23:44,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:23:44,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:23:44,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:23:44,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:23:44,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:23:44,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:23:44,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:23:44,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:23:44,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:23:44,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:23:44,550 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:23:44,552 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:23:44,553 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test09.c [2019-09-16 16:23:44,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff48f62/0137013536c343e0944e9de7be0a8759/FLAG9bbddee60 [2019-09-16 16:23:45,036 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:23:45,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test09.c [2019-09-16 16:23:45,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff48f62/0137013536c343e0944e9de7be0a8759/FLAG9bbddee60 [2019-09-16 16:23:45,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff48f62/0137013536c343e0944e9de7be0a8759 [2019-09-16 16:23:45,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:23:45,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:23:45,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:23:45,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:23:45,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:23:45,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377f0a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45, skipping insertion in model container [2019-09-16 16:23:45,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,414 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:23:45,431 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:23:45,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:23:45,687 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:23:45,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:23:45,727 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:23:45,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45 WrapperNode [2019-09-16 16:23:45,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:23:45,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:23:45,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:23:45,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:23:45,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (1/1) ... [2019-09-16 16:23:45,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:23:45,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:23:45,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:23:45,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:23:45,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (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 [2019-09-16 16:23:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:23:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:23:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-16 16:23:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:23:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:23:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-16 16:23:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 16:23:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:23:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 16:23:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:23:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 16:23:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 16:23:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:23:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:23:46,128 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:23:46,128 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-16 16:23:46,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:23:46 BoogieIcfgContainer [2019-09-16 16:23:46,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:23:46,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:23:46,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:23:46,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:23:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:23:45" (1/3) ... [2019-09-16 16:23:46,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a46f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:23:46, skipping insertion in model container [2019-09-16 16:23:46,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:23:45" (2/3) ... [2019-09-16 16:23:46,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a46f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:23:46, skipping insertion in model container [2019-09-16 16:23:46,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:23:46" (3/3) ... [2019-09-16 16:23:46,138 INFO L109 eAbstractionObserver]: Analyzing ICFG test09.c [2019-09-16 16:23:46,151 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:23:46,162 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:23:46,201 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:23:46,246 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:23:46,250 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:23:46,250 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:23:46,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:23:46,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:23:46,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:23:46,251 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:23:46,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:23:46,251 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:23:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-16 16:23:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:23:46,283 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:23:46,284 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:23:46,286 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:23:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:23:46,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2019-09-16 16:23:46,294 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:23:46,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:23:46,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:23:46,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:23:46,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:23:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:23:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:23:46,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:23:46,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 16:23:46,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:23:46,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:23:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:23:46,547 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-09-16 16:23:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:23:46,620 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-09-16 16:23:46,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:23:46,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-16 16:23:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:23:46,631 INFO L225 Difference]: With dead ends: 33 [2019-09-16 16:23:46,632 INFO L226 Difference]: Without dead ends: 15 [2019-09-16 16:23:46,635 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 [2019-09-16 16:23:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-16 16:23:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-16 16:23:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-16 16:23:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-09-16 16:23:46,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-09-16 16:23:46,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:23:46,672 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-09-16 16:23:46,672 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:23:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-09-16 16:23:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:23:46,673 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:23:46,674 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:23:46,674 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:23:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:23:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2019-09-16 16:23:46,675 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:23:46,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:23:46,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:23:46,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:23:46,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:23:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:23:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:23:47,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:23:47,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 16:23:47,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:23:47,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:23:47,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:23:47,106 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2019-09-16 16:23:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:23:47,272 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-09-16 16:23:47,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 16:23:47,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-09-16 16:23:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:23:47,274 INFO L225 Difference]: With dead ends: 15 [2019-09-16 16:23:47,275 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:23:47,276 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-16 16:23:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:23:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:23:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:23:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:23:47,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-16 16:23:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:23:47,278 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:23:47,278 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:23:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:23:47,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:23:47,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:23:47,452 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:23:47,452 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) [2019-09-16 16:23:47,453 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:23:47,453 INFO L443 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2019-09-16 16:23:47,453 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2019-09-16 16:23:47,453 INFO L439 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |~#a~0.base| ~p1~0.base)) (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2019-09-16 16:23:47,453 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2019-09-16 16:23:47,454 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:23:47,454 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base)) [2019-09-16 16:23:47,454 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:23:47,454 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:23:47,454 INFO L439 ceAbstractionStarter]: At program point L32(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2019-09-16 16:23:47,454 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-09-16 16:23:47,455 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2019-09-16 16:23:47,455 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= ~p2~0.offset ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= ~p2~0.base ~p1~0.base))) [2019-09-16 16:23:47,455 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 39) no Hoare annotation was computed. [2019-09-16 16:23:47,455 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (and (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset)) (= ~p1~0.offset |~#a~0.offset|) (= |~#a~0.base| ~p1~0.base)) (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2019-09-16 16:23:47,456 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-09-16 16:23:47,456 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2019-09-16 16:23:47,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:23:47 BoogieIcfgContainer [2019-09-16 16:23:47,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:23:47,474 INFO L168 Benchmark]: Toolchain (without parser) took 2073.99 ms. Allocated memory was 133.7 MB in the beginning and 225.4 MB in the end (delta: 91.8 MB). Free memory was 88.9 MB in the beginning and 182.9 MB in the end (delta: -94.0 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:23:47,475 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 133.7 MB. Free memory was 107.8 MB in the beginning and 107.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:23:47,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.99 ms. Allocated memory is still 133.7 MB. Free memory was 88.7 MB in the beginning and 79.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:23:47,477 INFO L168 Benchmark]: Boogie Preprocessor took 138.55 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 79.0 MB in the beginning and 176.2 MB in the end (delta: -97.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:23:47,478 INFO L168 Benchmark]: RCFGBuilder took 262.50 ms. Allocated memory is still 199.8 MB. Free memory was 176.2 MB in the beginning and 161.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-09-16 16:23:47,479 INFO L168 Benchmark]: TraceAbstraction took 1340.03 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 161.6 MB in the beginning and 182.9 MB in the end (delta: -21.4 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:23:47,483 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 133.7 MB. Free memory was 107.8 MB in the beginning and 107.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.99 ms. Allocated memory is still 133.7 MB. Free memory was 88.7 MB in the beginning and 79.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.55 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 79.0 MB in the beginning and 176.2 MB in the end (delta: -97.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 262.50 ms. Allocated memory is still 199.8 MB. Free memory was 176.2 MB in the beginning and 161.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1340.03 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 161.6 MB in the beginning and 182.9 MB in the end (delta: -21.4 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: 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 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 10 SDslu, 33 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 109 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 3835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...