/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/alias_of_return_2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:58:14,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:58:14,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:58:14,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-24 14:58:14,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:58:14,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:58:14,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:58:14,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:58:14,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:58:14,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:58:14,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:58:14,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:58:14,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:58:14,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:58:14,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:58:14,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:58:14,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:58:14,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:58:14,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:58:14,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:58:14,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:58:14,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:58:14,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:58:14,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:58:14,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:58:14,799 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:58:14,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:58:14,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:58:14,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:58:14,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:58:14,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:58:14,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:58:14,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:58:14,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:58:14,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:58:14,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:58:14,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:58:14,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:58:14,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:58:14,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:58:14,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:58:14,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:58:14,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:58:14,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:58:14,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:58:14,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:58:14,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:58:14,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:58:14,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:58:14,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:58:14,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:58:15,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:58:15,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:58:15,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:58:15,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:58:15,323 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:58:15,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alias_of_return_2.i [2020-09-24 14:58:15,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68706782a/0d9b003d6c5346c3aef27c55b4279541/FLAG7487b8f16 [2020-09-24 14:58:15,945 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:58:15,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/alias_of_return_2.i [2020-09-24 14:58:15,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68706782a/0d9b003d6c5346c3aef27c55b4279541/FLAG7487b8f16 [2020-09-24 14:58:16,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68706782a/0d9b003d6c5346c3aef27c55b4279541 [2020-09-24 14:58:16,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:58:16,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:58:16,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:16,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:58:16,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:58:16,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16, skipping insertion in model container [2020-09-24 14:58:16,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:58:16,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:58:16,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:16,689 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:58:16,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:16,737 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:58:16,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16 WrapperNode [2020-09-24 14:58:16,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:16,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:58:16,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:58:16,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:58:16,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (1/1) ... [2020-09-24 14:58:16,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:58:16,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:58:16,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:58:16,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:58:16,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (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 [2020-09-24 14:58:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:58:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:58:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-09-24 14:58:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure return_self [2020-09-24 14:58:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:58:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:58:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-09-24 14:58:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:58:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure return_self [2020-09-24 14:58:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:58:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:58:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:58:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:58:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:58:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:58:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:58:17,270 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:58:17,270 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 14:58:17,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:17 BoogieIcfgContainer [2020-09-24 14:58:17,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:58:17,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:58:17,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:58:17,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:58:17,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:58:16" (1/3) ... [2020-09-24 14:58:17,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6744fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:17, skipping insertion in model container [2020-09-24 14:58:17,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:16" (2/3) ... [2020-09-24 14:58:17,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6744fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:17, skipping insertion in model container [2020-09-24 14:58:17,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:17" (3/3) ... [2020-09-24 14:58:17,288 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return_2.i [2020-09-24 14:58:17,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:58:17,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:58:17,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:58:17,384 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:58:17,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:58:17,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:58:17,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:58:17,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:58:17,385 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:58:17,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:58:17,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:58:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 14:58:17,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 14:58:17,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:17,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:17,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:17,438 INFO L82 PathProgramCache]: Analyzing trace with hash -390061783, now seen corresponding path program 1 times [2020-09-24 14:58:17,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:17,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407053370] [2020-09-24 14:58:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:58:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:17,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407053370] [2020-09-24 14:58:17,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:17,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 14:58:17,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822113524] [2020-09-24 14:58:17,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 14:58:17,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:17,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 14:58:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:58:17,863 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2020-09-24 14:58:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:18,179 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-09-24 14:58:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 14:58:18,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-09-24 14:58:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:18,194 INFO L225 Difference]: With dead ends: 44 [2020-09-24 14:58:18,194 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 14:58:18,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:58:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 14:58:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 14:58:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 14:58:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 14:58:18,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 14:58:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:18,245 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 14:58:18,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 14:58:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 14:58:18,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 14:58:18,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:58:18,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 14:58:18,324 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 14:58:18,325 INFO L271 CegarLoopResult]: At program point return_selfENTRY(lines 12 19) the Hoare annotation is: true [2020-09-24 14:58:18,325 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 14:58:18,325 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 14:58:18,325 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point return_selfFINAL(lines 12 19) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point return_selfEXIT(lines 12 19) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:18,326 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:18,327 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 14:58:18,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:18,327 INFO L268 CegarLoopResult]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 14:58:18,327 INFO L268 CegarLoopResult]: For program point errEXIT(lines 7 8) no Hoare annotation was computed. [2020-09-24 14:58:18,328 INFO L271 CegarLoopResult]: At program point errENTRY(lines 7 8) the Hoare annotation is: true [2020-09-24 14:58:18,328 INFO L268 CegarLoopResult]: For program point errFINAL(lines 7 8) no Hoare annotation was computed. [2020-09-24 14:58:18,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:18,328 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 14:58:18,329 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 14:58:18,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:18,329 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 14:58:18,329 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 14:58:18,329 INFO L264 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: false [2020-09-24 14:58:18,329 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 14:58:18,330 INFO L268 CegarLoopResult]: For program point L34-4(line 34) no Hoare annotation was computed. [2020-09-24 14:58:18,330 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 21 35) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 14:58:18,330 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 14:58:18,330 INFO L268 CegarLoopResult]: For program point L34-5(line 34) no Hoare annotation was computed. [2020-09-24 14:58:18,330 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 14:58:18,331 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 14:58:18,331 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 35) no Hoare annotation was computed. [2020-09-24 14:58:18,331 INFO L271 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-09-24 14:58:18,331 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 14:58:18,331 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 14:58:18,332 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 21 35) no Hoare annotation was computed. [2020-09-24 14:58:18,332 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 14:58:18,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:18 BoogieIcfgContainer [2020-09-24 14:58:18,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:18,344 INFO L168 Benchmark]: Toolchain (without parser) took 2036.95 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 102.9 MB in the beginning and 107.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:18,345 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:58:18,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.39 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 92.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:18,347 INFO L168 Benchmark]: Boogie Preprocessor took 184.68 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 92.1 MB in the beginning and 183.8 MB in the end (delta: -91.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:18,349 INFO L168 Benchmark]: RCFGBuilder took 352.73 ms. Allocated memory is still 206.0 MB. Free memory was 183.8 MB in the beginning and 169.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:18,350 INFO L168 Benchmark]: TraceAbstraction took 1061.51 ms. Allocated memory is still 206.0 MB. Free memory was 169.2 MB in the beginning and 107.0 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:18,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 425.39 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 92.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.68 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 92.1 MB in the beginning and 183.8 MB in the end (delta: -91.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.73 ms. Allocated memory is still 206.0 MB. Free memory was 183.8 MB in the beginning and 169.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1061.51 ms. Allocated memory is still 206.0 MB. Free memory was 169.2 MB in the beginning and 107.0 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 25 SDslu, 87 SDs, 0 SdLazy, 106 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...