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/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:01:00,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:01:00,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:01:00,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:01:00,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:01:00,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:01:00,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:01:00,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:01:00,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:01:00,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:01:00,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:01:00,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:01:00,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:01:00,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:01:00,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:01:00,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:01:00,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:01:00,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:01:00,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:01:00,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:01:00,342 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 [2019-09-20 13:01:00,356 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:01:00,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:01:00,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:01:00,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:01:00,358 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:01:00,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:01:00,358 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:01:00,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:01:00,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:01:00,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:01:00,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:01:00,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:01:00,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:01:00,360 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:01:00,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:01:00,360 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:01:00,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:01:00,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:01:00,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:01:00,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:01:00,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:01:00,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:01:00,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:01:00,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:01:00,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:01:00,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:01:00,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:01:00,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:01:00,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:01:00,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:01:00,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:01:00,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:01:00,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:01:00,409 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:01:00,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2019-09-20 13:01:00,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b821401a/9cf1f922604147019d01c934c9a99a26/FLAG4556ee5ea [2019-09-20 13:01:00,975 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:01:00,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2019-09-20 13:01:00,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b821401a/9cf1f922604147019d01c934c9a99a26/FLAG4556ee5ea [2019-09-20 13:01:01,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b821401a/9cf1f922604147019d01c934c9a99a26 [2019-09-20 13:01:01,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:01:01,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:01:01,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:01,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:01:01,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:01:01,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c7068c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01, skipping insertion in model container [2019-09-20 13:01:01,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,418 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:01:01,432 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:01:01,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:01,598 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:01:01,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:01,628 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:01:01,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01 WrapperNode [2019-09-20 13:01:01,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:01,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:01:01,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:01:01,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:01:01,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (1/1) ... [2019-09-20 13:01:01,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:01:01,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:01:01,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:01:01,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:01:01,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (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 13:01:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:01:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:01:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-09-20 13:01:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:01:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:01:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:01:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 13:01:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-09-20 13:01:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:01:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:01:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:01:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:01:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:01:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:01:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:01:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:01:02,087 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:01:02,087 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:01:02,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:02 BoogieIcfgContainer [2019-09-20 13:01:02,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:01:02,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:01:02,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:01:02,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:01:02,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:01:01" (1/3) ... [2019-09-20 13:01:02,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fe52c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:02, skipping insertion in model container [2019-09-20 13:01:02,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:01" (2/3) ... [2019-09-20 13:01:02,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fe52c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:02, skipping insertion in model container [2019-09-20 13:01:02,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:02" (3/3) ... [2019-09-20 13:01:02,113 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2019-09-20 13:01:02,125 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:01:02,150 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:01:02,180 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:01:02,212 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:01:02,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:01:02,213 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:01:02,213 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:01:02,213 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:01:02,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:01:02,213 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:01:02,213 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:01:02,213 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:01:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-20 13:01:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:01:02,233 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:02,234 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:02,236 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:02,241 INFO L82 PathProgramCache]: Analyzing trace with hash 521841741, now seen corresponding path program 1 times [2019-09-20 13:01:02,243 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:02,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:02,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:02,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:02,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:02,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:02,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:01:02,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:01:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:01:02,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:01:02,490 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-09-20 13:01:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:02,574 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-09-20 13:01:02,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:01:02,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-20 13:01:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:02,593 INFO L225 Difference]: With dead ends: 29 [2019-09-20 13:01:02,593 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 13:01:02,599 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:01:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 13:01:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 13:01:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 13:01:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-20 13:01:02,643 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2019-09-20 13:01:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:02,646 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-20 13:01:02,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:01:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-20 13:01:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:01:02,648 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:02,649 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:02,649 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:02,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1019657549, now seen corresponding path program 1 times [2019-09-20 13:01:02,651 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:02,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:02,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:02,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:02,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:02,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:02,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:01:02,822 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:01:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:01:02,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:01:02,823 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-09-20 13:01:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:02,880 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-09-20 13:01:02,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:01:02,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-20 13:01:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:02,882 INFO L225 Difference]: With dead ends: 18 [2019-09-20 13:01:02,882 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:01:02,883 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:01:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:01:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:01:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:01:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:01:02,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-20 13:01:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:02,884 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:01:02,885 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:01:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:01:02,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:01:02,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:01:02,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-20 13:01:02,915 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-20 13:01:02,915 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 13:01:02,915 INFO L443 ceAbstractionStarter]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2019-09-20 13:01:02,915 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-09-20 13:01:02,916 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2019-09-20 13:01:02,916 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2019-09-20 13:01:02,916 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 13:01:02,916 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 13:01:02,916 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 13:01:02,917 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 13:01:02,917 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2019-09-20 13:01:02,917 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2019-09-20 13:01:02,918 INFO L439 ceAbstractionStarter]: At program point L20(lines 12 27) the Hoare annotation is: false [2019-09-20 13:01:02,918 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-09-20 13:01:02,919 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2019-09-20 13:01:02,919 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2019-09-20 13:01:02,920 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2019-09-20 13:01:02,920 INFO L443 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2019-09-20 13:01:02,920 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-09-20 13:01:02,920 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-09-20 13:01:02,920 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2019-09-20 13:01:02,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:01:02 BoogieIcfgContainer [2019-09-20 13:01:02,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:01:02,941 INFO L168 Benchmark]: Toolchain (without parser) took 1535.68 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 85.1 MB in the beginning and 117.1 MB in the end (delta: -32.0 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:02,942 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:01:02,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.47 ms. Allocated memory is still 138.4 MB. Free memory was 84.9 MB in the beginning and 75.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:02,948 INFO L168 Benchmark]: Boogie Preprocessor took 130.08 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 75.1 MB in the beginning and 174.9 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:02,956 INFO L168 Benchmark]: RCFGBuilder took 329.67 ms. Allocated memory is still 198.2 MB. Free memory was 174.9 MB in the beginning and 159.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:02,958 INFO L168 Benchmark]: TraceAbstraction took 837.98 ms. Allocated memory is still 198.2 MB. Free memory was 159.6 MB in the beginning and 117.1 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:02,966 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 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.47 ms. Allocated memory is still 138.4 MB. Free memory was 84.9 MB in the beginning and 75.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.08 ms. Allocated memory was 138.4 MB in the beginning and 198.2 MB in the end (delta: 59.8 MB). Free memory was 75.1 MB in the beginning and 174.9 MB in the end (delta: -99.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.67 ms. Allocated memory is still 198.2 MB. Free memory was 174.9 MB in the beginning and 159.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 837.98 ms. Allocated memory is still 198.2 MB. Free memory was 159.6 MB in the beginning and 117.1 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 19 SDslu, 63 SDs, 0 SdLazy, 12 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 10 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 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...