/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:01:16,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:01:16,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:01:16,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 18:01:16,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:01:16,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:01:16,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:01:16,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:01:16,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:01:16,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:01:16,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:01:16,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:01:16,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:01:16,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:01:16,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:01:16,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:01:16,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:01:16,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:01:16,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:01:16,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:01:16,971 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 [2020-08-18 18:01:17,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:01:17,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:01:17,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:01:17,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:01:17,020 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:01:17,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:01:17,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:01:17,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:01:17,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:01:17,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:01:17,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:01:17,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:01:17,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:01:17,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:01:17,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:01:17,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:01:17,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:01:17,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:01:17,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:01:17,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:01:17,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:01:17,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:01:17,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:01:17,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:01:17,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:01:17,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:01:17,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:01:17,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:01:17,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:01:17,027 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 18:01:17,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:01:17,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:01:17,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:01:17,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:01:17,399 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:01:17,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2020-08-18 18:01:17,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74a090868/64d8578f66de4cf1a17af99874a8f57c/FLAG140c5a669 [2020-08-18 18:01:17,936 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:01:17,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/css2003.i [2020-08-18 18:01:17,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74a090868/64d8578f66de4cf1a17af99874a8f57c/FLAG140c5a669 [2020-08-18 18:01:18,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74a090868/64d8578f66de4cf1a17af99874a8f57c [2020-08-18 18:01:18,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:01:18,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:01:18,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:01:18,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:01:18,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:01:18,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18, skipping insertion in model container [2020-08-18 18:01:18,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:01:18,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:01:18,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:01:18,509 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:01:18,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:01:18,546 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:01:18,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18 WrapperNode [2020-08-18 18:01:18,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:01:18,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:01:18,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:01:18,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:01:18,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (1/1) ... [2020-08-18 18:01:18,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:01:18,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:01:18,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:01:18,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:01:18,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (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 [2020-08-18 18:01:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:01:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:01:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:01:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:01:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:01:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:01:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:01:18,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:01:18,912 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 18:01:18,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:01:18 BoogieIcfgContainer [2020-08-18 18:01:18,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:01:18,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:01:18,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:01:18,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:01:18,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:01:18" (1/3) ... [2020-08-18 18:01:18,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d99108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:01:18, skipping insertion in model container [2020-08-18 18:01:18,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:18" (2/3) ... [2020-08-18 18:01:18,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d99108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:01:18, skipping insertion in model container [2020-08-18 18:01:18,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:01:18" (3/3) ... [2020-08-18 18:01:18,925 INFO L109 eAbstractionObserver]: Analyzing ICFG css2003.i [2020-08-18 18:01:18,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:01:18,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:01:18,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:01:19,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:01:19,011 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:01:19,015 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:01:19,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:01:19,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:01:19,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:01:19,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:01:19,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:01:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-18 18:01:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-18 18:01:19,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:01:19,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:01:19,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:01:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:01:19,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1610750385, now seen corresponding path program 1 times [2020-08-18 18:01:19,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:01:19,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258472637] [2020-08-18 18:01:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:01:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:19,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:01:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:01:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:01:19,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258472637] [2020-08-18 18:01:19,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:01:19,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:01:19,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33536097] [2020-08-18 18:01:19,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:01:19,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:01:19,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:01:19,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:01:19,407 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2020-08-18 18:01:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:01:19,538 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-08-18 18:01:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:01:19,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-08-18 18:01:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:01:19,547 INFO L225 Difference]: With dead ends: 33 [2020-08-18 18:01:19,548 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:01:19,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:01:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:01:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:01:19,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:01:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:01:19,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-08-18 18:01:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:01:19,576 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:01:19,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:01:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:01:19,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:01:19,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:01:19,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:01:19,677 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 18:01:19,678 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:01:19,678 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:01:19,678 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 18:01:19,678 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 18:01:19,679 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:01:19,679 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:01:19,679 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 18:01:19,679 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:01:19,680 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-18 18:01:19,680 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-08-18 18:01:19,680 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-08-18 18:01:19,680 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-08-18 18:01:19,681 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 1 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-08-18 18:01:19,681 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-18 18:01:19,681 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-08-18 18:01:19,681 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-08-18 18:01:19,682 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-18 18:01:19,682 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-18 18:01:19,682 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 18:01:19,682 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-18 18:01:19,682 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-18 18:01:19,683 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-18 18:01:19,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:01:19 BoogieIcfgContainer [2020-08-18 18:01:19,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:01:19,707 INFO L168 Benchmark]: Toolchain (without parser) took 1406.00 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 125.6 MB in the end (delta: -23.3 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:19,708 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:01:19,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.27 ms. Allocated memory is still 138.4 MB. Free memory was 102.0 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:19,710 INFO L168 Benchmark]: Boogie Preprocessor took 112.00 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:19,711 INFO L168 Benchmark]: RCFGBuilder took 256.15 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 168.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:19,712 INFO L168 Benchmark]: TraceAbstraction took 785.86 ms. Allocated memory is still 200.8 MB. Free memory was 167.5 MB in the beginning and 125.6 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:01:19,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.27 ms. Allocated memory is still 138.4 MB. Free memory was 102.0 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.00 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.15 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 168.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 785.86 ms. Allocated memory is still 200.8 MB. Free memory was 167.5 MB in the beginning and 125.6 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 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 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= i && i + k <= 2) && 1 <= i + k - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 48 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 8 PreInvPairs, 11 NumberOfFragments, 33 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 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...