/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:40:30,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:40:30,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:40:30,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:40:30,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:40:30,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:40:30,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:40:30,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:40:30,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:40:30,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:40:30,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:40:30,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:40:30,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:40:30,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:40:30,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:40:30,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:40:30,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:40:30,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:40:30,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:40:30,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:40:30,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:40:30,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:40:30,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:40:30,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:40:30,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:40:30,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:40:30,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:40:30,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:40:30,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:40:30,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:40:30,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:40:30,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:40:30,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:40:30,801 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:40:30,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:40:30,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:40:30,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:40:30,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:40:30,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:40:30,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:40:30,803 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:40:31,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:40:31,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:40:31,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:40:31,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:40:31,333 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:40:31,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c [2020-09-04 16:40:31,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01cd9d545/2d7deabe69c34898a547dcda3dda6a48/FLAG42f9b36da [2020-09-04 16:40:32,100 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:40:32,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test20.c [2020-09-04 16:40:32,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01cd9d545/2d7deabe69c34898a547dcda3dda6a48/FLAG42f9b36da [2020-09-04 16:40:32,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01cd9d545/2d7deabe69c34898a547dcda3dda6a48 [2020-09-04 16:40:32,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:40:32,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:40:32,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:40:32,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:40:32,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:40:32,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e74e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32, skipping insertion in model container [2020-09-04 16:40:32,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:40:32,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:40:32,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:40:32,711 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:40:32,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:40:32,785 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:40:32,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32 WrapperNode [2020-09-04 16:40:32,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:40:32,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:40:32,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:40:32,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:40:32,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... [2020-09-04 16:40:32,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:40:32,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:40:32,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:40:32,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:40:32,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:40:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:40:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:40:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-09-04 16:40:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:40:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:40:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-09-04 16:40:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:40:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:40:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:40:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 16:40:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:40:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:40:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:40:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:40:33,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:40:33,321 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:40:33,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:40:33 BoogieIcfgContainer [2020-09-04 16:40:33,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:40:33,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:40:33,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:40:33,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:40:33,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:40:32" (1/3) ... [2020-09-04 16:40:33,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b35998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:40:33, skipping insertion in model container [2020-09-04 16:40:33,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:32" (2/3) ... [2020-09-04 16:40:33,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b35998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:40:33, skipping insertion in model container [2020-09-04 16:40:33,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:40:33" (3/3) ... [2020-09-04 16:40:33,368 INFO L109 eAbstractionObserver]: Analyzing ICFG test20.c [2020-09-04 16:40:33,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:40:33,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:40:33,424 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:40:33,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:40:33,458 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:40:33,458 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:40:33,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:40:33,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:40:33,459 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:40:33,459 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:40:33,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:40:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-04 16:40:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 16:40:33,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:33,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:33,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:33,506 INFO L82 PathProgramCache]: Analyzing trace with hash 923328836, now seen corresponding path program 1 times [2020-09-04 16:40:33,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:33,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539246717] [2020-09-04 16:40:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:33,596 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:40:33,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539246717] [2020-09-04 16:40:33,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:33,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:40:33,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147533556] [2020-09-04 16:40:33,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:40:33,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:40:33,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:40:34,001 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 8 states. [2020-09-04 16:40:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:34,370 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2020-09-04 16:40:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:40:34,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-09-04 16:40:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:34,385 INFO L225 Difference]: With dead ends: 31 [2020-09-04 16:40:34,386 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 16:40:34,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:40:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 16:40:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 16:40:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 16:40:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 16:40:34,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-04 16:40:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:34,439 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 16:40:34,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:40:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 16:40:34,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 16:40:34,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:40:34,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 16:40:34,931 INFO L264 CegarLoopResult]: At program point equalEXIT(lines 4 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|)) [2020-09-04 16:40:34,931 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-09-04 16:40:34,932 INFO L264 CegarLoopResult]: At program point equalFINAL(lines 4 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|)) [2020-09-04 16:40:34,932 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-09-04 16:40:34,932 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (and (not (= equal_~a.base |equal_#in~b.base|)) (not (= equal_~a.base equal_~b.base))) (= |~#b~0.base| |~#a~0.base|)) [2020-09-04 16:40:34,933 INFO L264 CegarLoopResult]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-09-04 16:40:34,933 INFO L264 CegarLoopResult]: At program point L4(lines 4 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (not (= equal_~a.base |equal_#in~b.base|)) (not (= (select |#valid| |~#a~0.base|) 1)) (= |~#b~0.base| |~#a~0.base|)) [2020-09-04 16:40:34,933 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 16:40:34,933 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-09-04 16:40:34,934 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-09-04 16:40:34,934 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 14) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-09-04 16:40:34,934 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1) [2020-09-04 16:40:34,934 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1) [2020-09-04 16:40:34,935 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-09-04 16:40:34,935 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 16:40:34,935 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-09-04 16:40:34,935 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-09-04 16:40:34,936 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-09-04 16:40:34,936 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 16:40:34,936 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-09-04 16:40:34,936 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-09-04 16:40:34,937 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2020-09-04 16:40:34,937 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 16 19) the Hoare annotation is: true [2020-09-04 16:40:34,937 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 16 19) the Hoare annotation is: true [2020-09-04 16:40:34,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:40:34 BoogieIcfgContainer [2020-09-04 16:40:34,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:40:34,971 INFO L168 Benchmark]: Toolchain (without parser) took 2543.07 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 102.9 MB in the beginning and 176.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:34,972 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:40:34,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.71 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:34,975 INFO L168 Benchmark]: Boogie Preprocessor took 42.59 ms. Allocated memory is still 137.9 MB. Free memory was 93.2 MB in the beginning and 91.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:34,976 INFO L168 Benchmark]: RCFGBuilder took 498.41 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.6 MB in the beginning and 168.1 MB in the end (delta: -76.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:34,978 INFO L168 Benchmark]: TraceAbstraction took 1623.76 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 167.4 MB in the beginning and 176.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:34,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.71 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.59 ms. Allocated memory is still 137.9 MB. Free memory was 93.2 MB in the beginning and 91.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 498.41 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.6 MB in the beginning and 168.1 MB in the end (delta: -76.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1623.76 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 167.4 MB in the beginning and 176.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant Derived loop invariant: (a == b || a == b) || !(\valid[a] == 1) - ProcedureContractResult [Line: 4]: Procedure Contract for equal Derived contract for procedure equal: ((a == b || !(\valid[a] == 1)) || (!(a == b) && !(a == b))) || b == a - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 31 SDslu, 38 SDs, 0 SdLazy, 42 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 31 NumberOfFragments, 213 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 371 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...