/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:09:58,423 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 01:09:58,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:58,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:58,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:58,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:58,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:58,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:58,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:58,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:58,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:58,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:58,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:58,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:58,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:58,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:58,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:58,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:58,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:58,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:58,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:58,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:58,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:09:58,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:58,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:58,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:58,545 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 [2020-08-19 01:09:58,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:58,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:58,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:58,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:58,588 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:58,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:58,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:58,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:58,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:58,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:58,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:58,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:58,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:58,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:58,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:58,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:58,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:58,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:58,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:58,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:58,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:58,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:58,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:58,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:58,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:58,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:58,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:58,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:58,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:58,596 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:58,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:58,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:58,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:58,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:58,906 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:58,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2020-08-19 01:09:58,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a43abcbb/9079517016dc4bc9996739392cab3b59/FLAG6812f3a73 [2020-08-19 01:09:59,443 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:59,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test16.c [2020-08-19 01:09:59,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a43abcbb/9079517016dc4bc9996739392cab3b59/FLAG6812f3a73 [2020-08-19 01:09:59,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a43abcbb/9079517016dc4bc9996739392cab3b59 [2020-08-19 01:09:59,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:59,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:59,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:59,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:59,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:59,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:59" (1/1) ... [2020-08-19 01:09:59,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:59, skipping insertion in model container [2020-08-19 01:09:59,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:59" (1/1) ... [2020-08-19 01:09:59,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:59,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:10:00,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:10:00,117 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:10:00,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:10:00,159 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:10:00,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00 WrapperNode [2020-08-19 01:10:00,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:10:00,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:10:00,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:10:00,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:10:00,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (1/1) ... [2020-08-19 01:10:00,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:10:00,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:10:00,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:10:00,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:10:00,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (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 [2020-08-19 01:10:00,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:10:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:10:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-08-19 01:10:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:10:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:10:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-08-19 01:10:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:10:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:10:00,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:10:00,593 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:10:00,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:10:00 BoogieIcfgContainer [2020-08-19 01:10:00,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:10:00,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:10:00,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:10:00,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:10:00,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:59" (1/3) ... [2020-08-19 01:10:00,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7f9c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:10:00, skipping insertion in model container [2020-08-19 01:10:00,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:00" (2/3) ... [2020-08-19 01:10:00,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7f9c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:10:00, skipping insertion in model container [2020-08-19 01:10:00,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:10:00" (3/3) ... [2020-08-19 01:10:00,608 INFO L109 eAbstractionObserver]: Analyzing ICFG test16.c [2020-08-19 01:10:00,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:10:00,626 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:10:00,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:10:00,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:10:00,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:10:00,666 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:10:00,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:10:00,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:10:00,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:10:00,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:10:00,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:10:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-19 01:10:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 01:10:00,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:00,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:00,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash 390654600, now seen corresponding path program 1 times [2020-08-19 01:10:00,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:00,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016131360] [2020-08-19 01:10:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:01,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:10:01,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016131360] [2020-08-19 01:10:01,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:10:01,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:10:01,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250017059] [2020-08-19 01:10:01,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:10:01,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:10:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:10:01,117 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-08-19 01:10:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:01,373 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-08-19 01:10:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:10:01,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-08-19 01:10:01,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:01,383 INFO L225 Difference]: With dead ends: 25 [2020-08-19 01:10:01,383 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:10:01,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:10:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:10:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:10:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:10:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:10:01,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-19 01:10:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:01,417 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:10:01,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:10:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:10:01,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:10:01,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:10:01,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:10:01,604 INFO L268 CegarLoopResult]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2020-08-19 01:10:01,605 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-08-19 01:10:01,605 INFO L268 CegarLoopResult]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2020-08-19 01:10:01,605 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (= |~#a~0.base| |~#b~0.base|) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2020-08-19 01:10:01,605 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-19 01:10:01,606 INFO L268 CegarLoopResult]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-08-19 01:10:01,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:10:01,606 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~pa~0.base |old(~pa~0.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~pb~0.offset |old(~pb~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|)) [2020-08-19 01:10:01,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:10:01,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:10:01,607 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (not (= |~#b~0.base| |~#a~0.base|))) [2020-08-19 01:10:01,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:10:01,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:10:01,607 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 28) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|))) (and (= ~pa~0.base |old(~pa~0.base)|) (= |old(~pa~0.offset)| ~pa~0.offset) (= |old(~pb~0.base)| ~pb~0.base) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= |old(~pb~0.offset)| ~pb~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2020-08-19 01:10:01,608 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 28) no Hoare annotation was computed. [2020-08-19 01:10:01,608 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|))) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-08-19 01:10:01,608 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-08-19 01:10:01,608 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 28) no Hoare annotation was computed. [2020-08-19 01:10:01,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,628 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,628 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,628 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:10:01 BoogieIcfgContainer [2020-08-19 01:10:01,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:10:01,634 INFO L168 Benchmark]: Toolchain (without parser) took 1807.43 ms. Allocated memory was 148.4 MB in the beginning and 233.3 MB in the end (delta: 84.9 MB). Free memory was 105.0 MB in the beginning and 192.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:10:01,635 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:10:01,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.03 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 95.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:10:01,637 INFO L168 Benchmark]: Boogie Preprocessor took 34.27 ms. Allocated memory is still 148.4 MB. Free memory was 95.0 MB in the beginning and 93.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:10:01,638 INFO L168 Benchmark]: RCFGBuilder took 401.95 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.5 MB in the beginning and 169.2 MB in the end (delta: -75.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:10:01,639 INFO L168 Benchmark]: TraceAbstraction took 1031.77 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 168.5 MB in the beginning and 192.9 MB in the end (delta: -24.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:10:01,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.03 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 95.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.27 ms. Allocated memory is still 148.4 MB. Free memory was 95.0 MB in the beginning and 93.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.95 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.5 MB in the beginning and 169.2 MB in the end (delta: -75.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1031.77 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 168.5 MB in the beginning and 192.9 MB in the end (delta: -24.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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 [2020-08-19 01:10:01,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 01:10:01,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a]) || a == b) || !(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 15 SDslu, 18 SDs, 0 SdLazy, 23 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 150 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 711 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...