/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 0.1.25-86f66a4 [2020-07-07 13:24:25,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:24:25,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:24:25,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:24:25,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:24:25,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:24:25,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:24:25,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:24:25,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:24:25,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:24:25,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:24:25,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:24:25,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:24:25,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:24:25,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:24:25,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:24:25,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:24:25,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:24:25,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:24:25,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:24:25,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:24:25,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:24:25,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:24:25,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:24:25,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:24:25,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:24:25,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:24:25,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:24:25,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:24:25,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:24:25,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:24:25,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:24:25,413 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:24:25,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:24:25,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:24:25,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:24:25,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:24:25,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:24:25,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:24:25,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:24:25,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:24:25,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:24:25,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:24:25,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:24:25,415 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:24:25,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:24:25,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:24:25,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:24:25,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:24:25,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:24:25,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:24:25,417 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:24:25,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:24:25,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:24:25,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:24:25,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:24:25,709 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:24:25,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c [2020-07-07 13:24:25,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c55f471/c7b70b4a0e9247ddb3a3b017e04eae40/FLAG909bf4c31 [2020-07-07 13:24:26,223 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:24:26,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20.c [2020-07-07 13:24:26,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c55f471/c7b70b4a0e9247ddb3a3b017e04eae40/FLAG909bf4c31 [2020-07-07 13:24:26,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c55f471/c7b70b4a0e9247ddb3a3b017e04eae40 [2020-07-07 13:24:26,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:24:26,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:24:26,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:24:26,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:24:26,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:24:26,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:26,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18615db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26, skipping insertion in model container [2020-07-07 13:24:26,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:26,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:24:26,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:24:26,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:24:26,849 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:24:26,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:24:26,896 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:24:26,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26 WrapperNode [2020-07-07 13:24:26,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:24:26,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:24:26,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:24:26,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:24:26,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:26,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:27,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:27,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:27,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:27,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:27,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (1/1) ... [2020-07-07 13:24:27,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:24:27,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:24:27,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:24:27,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:24:27,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (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 [2020-07-07 13:24:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:24:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:24:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-07 13:24:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:24:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:24:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-07 13:24:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:24:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:24:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:24:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 13:24:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:24:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:24:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:24:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:24:27,324 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:24:27,324 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:24:27,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:24:27 BoogieIcfgContainer [2020-07-07 13:24:27,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:24:27,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:24:27,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:24:27,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:24:27,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:24:26" (1/3) ... [2020-07-07 13:24:27,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc34c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:24:27, skipping insertion in model container [2020-07-07 13:24:27,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:26" (2/3) ... [2020-07-07 13:24:27,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc34c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:24:27, skipping insertion in model container [2020-07-07 13:24:27,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:24:27" (3/3) ... [2020-07-07 13:24:27,338 INFO L109 eAbstractionObserver]: Analyzing ICFG test20.c [2020-07-07 13:24:27,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:24:27,388 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:24:27,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:24:27,458 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:24:27,458 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:24:27,459 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:24:27,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:24:27,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:24:27,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:24:27,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:24:27,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:24:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-07 13:24:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 13:24:27,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:27,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:27,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:27,492 INFO L82 PathProgramCache]: Analyzing trace with hash 923328836, now seen corresponding path program 1 times [2020-07-07 13:24:27,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:27,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283077285] [2020-07-07 13:24:27,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:27,838 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:27,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283077285] [2020-07-07 13:24:27,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:27,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:24:27,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626292863] [2020-07-07 13:24:27,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:24:27,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:27,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:24:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:24:27,870 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 8 states. [2020-07-07 13:24:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:28,159 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2020-07-07 13:24:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 13:24:28,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-07-07 13:24:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:28,169 INFO L225 Difference]: With dead ends: 31 [2020-07-07 13:24:28,169 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:24:28,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:24:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:24:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:24:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:24:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:24:28,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-07-07 13:24:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:28,202 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:24:28,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:24:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:24:28,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:24:28,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:24:28,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:24:28,594 INFO L264 CegarLoopResult]: At program point equalEXIT(lines 4 12) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (and (not (= equal_~a.base equal_~b.base)) (not (= equal_~a.base |equal_#in~b.base|))) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-07 13:24:28,594 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-07 13:24:28,595 INFO L264 CegarLoopResult]: At program point equalFINAL(lines 4 12) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (and (not (= equal_~a.base equal_~b.base)) (not (= equal_~a.base |equal_#in~b.base|))) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-07 13:24:28,595 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-07 13:24:28,595 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (and (not (= equal_~a.base equal_~b.base)) (not (= equal_~a.base |equal_#in~b.base|))) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-07 13:24:28,596 INFO L264 CegarLoopResult]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-07 13:24:28,596 INFO L264 CegarLoopResult]: At program point L4(lines 4 12) the Hoare annotation is: (or (not (= equal_~a.base |equal_#in~b.base|)) (= |~#b~0.base| |~#a~0.base|) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-07 13:24:28,596 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 13:24:28,596 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-07 13:24:28,597 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-07 13:24:28,597 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 14) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-07 13:24:28,597 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (= 1 (select |#valid| |~#a~0.base|)) [2020-07-07 13:24:28,597 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (= 1 (select |#valid| |~#a~0.base|)) [2020-07-07 13:24:28,597 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-07 13:24:28,598 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2020-07-07 13:24:28,598 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-07 13:24:28,598 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-07 13:24:28,598 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-07 13:24:28,599 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:24:28,599 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-07 13:24:28,599 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-07 13:24:28,599 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2020-07-07 13:24:28,599 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 16 19) the Hoare annotation is: true [2020-07-07 13:24:28,600 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 16 19) the Hoare annotation is: true [2020-07-07 13:24:28,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:24:28 BoogieIcfgContainer [2020-07-07 13:24:28,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:24:28,624 INFO L168 Benchmark]: Toolchain (without parser) took 1989.33 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 102.3 MB in the beginning and 174.9 MB in the end (delta: -72.6 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:28,625 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:24:28,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.09 ms. Allocated memory is still 145.2 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:28,627 INFO L168 Benchmark]: Boogie Preprocessor took 125.44 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:28,628 INFO L168 Benchmark]: RCFGBuilder took 305.71 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 167.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:28,630 INFO L168 Benchmark]: TraceAbstraction took 1290.81 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 174.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:28,634 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.09 ms. Allocated memory is still 145.2 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.44 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.0 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.71 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 167.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1290.81 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 174.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 84.4 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) || !(1 == \valid[a]) - ProcedureContractResult [Line: 4]: Procedure Contract for equal Derived contract for procedure equal: ((b == a || (!(a == b) && !(a == b))) || a == b) || !(1 == \valid[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: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, 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, 0.2s 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, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 371 FormulaSimplificationTreeSizeReductionInter, 0.2s 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...