/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/just_assert.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:28:53,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:28:53,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:28:53,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:28:53,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:28:53,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:28:53,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:28:53,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:28:53,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:28:53,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:28:53,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:28:53,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:28:53,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:28:53,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:28:53,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:28:53,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:28:53,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:28:53,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:28:53,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:28:53,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:28:53,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:28:53,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:28:53,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:28:53,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:28:53,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:28:53,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:28:53,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:28:53,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:28:53,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:28:53,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:28:53,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:28:53,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:28:53,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:28:53,294 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:28:53,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:28:53,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:28:53,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:28:53,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:28:53,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:28:53,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:28:53,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:28:53,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:28:53,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:28:53,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:28:53,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:28:53,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:28:53,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:28:53,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:28:53,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:28:53,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:28:53,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:28:53,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:28:53,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:28:53,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:28:53,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:28:53,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:53,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:28:53,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:28:53,299 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:28:53,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:28:53,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:28:53,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:28:53,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:28:53,595 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:28:53,596 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/just_assert.i [2020-07-20 11:28:53,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d1e625f/304f79aea1e9461894ca3456f081c104/FLAG44f2da9d3 [2020-07-20 11:28:54,146 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:28:54,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/just_assert.i [2020-07-20 11:28:54,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d1e625f/304f79aea1e9461894ca3456f081c104/FLAG44f2da9d3 [2020-07-20 11:28:54,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d1e625f/304f79aea1e9461894ca3456f081c104 [2020-07-20 11:28:54,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:28:54,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:28:54,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:28:54,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:28:54,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:28:54,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf1a10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54, skipping insertion in model container [2020-07-20 11:28:54,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:28:54,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:28:54,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:28:54,702 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:28:54,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:28:54,727 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:28:54,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54 WrapperNode [2020-07-20 11:28:54,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:28:54,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:28:54,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:28:54,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:28:54,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... [2020-07-20 11:28:54,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:28:54,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:28:54,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:28:54,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:28:54,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:28:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:28:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:28:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:28:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:28:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:28:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:28:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:28:55,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:28:55,002 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:28:55,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:28:55 BoogieIcfgContainer [2020-07-20 11:28:55,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:28:55,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:28:55,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:28:55,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:28:55,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:28:54" (1/3) ... [2020-07-20 11:28:55,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bed10fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:28:55, skipping insertion in model container [2020-07-20 11:28:55,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (2/3) ... [2020-07-20 11:28:55,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bed10fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:28:55, skipping insertion in model container [2020-07-20 11:28:55,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:28:55" (3/3) ... [2020-07-20 11:28:55,013 INFO L109 eAbstractionObserver]: Analyzing ICFG just_assert.i [2020-07-20 11:28:55,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:28:55,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:28:55,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:28:55,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:28:55,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:28:55,062 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:28:55,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:28:55,062 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:28:55,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:28:55,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:28:55,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:28:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-20 11:28:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-20 11:28:55,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:28:55,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-20 11:28:55,089 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:28:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:28:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1317434133, now seen corresponding path program 1 times [2020-07-20 11:28:55,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:28:55,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813989788] [2020-07-20 11:28:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:28:55,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:28:55,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:28:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:28:55,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:28:55,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813989788] [2020-07-20 11:28:55,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:28:55,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:28:55,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090123210] [2020-07-20 11:28:55,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:28:55,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:28:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:28:55,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:28:55,199 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2020-07-20 11:28:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:28:55,221 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-07-20 11:28:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:28:55,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-20 11:28:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:28:55,230 INFO L225 Difference]: With dead ends: 17 [2020-07-20 11:28:55,230 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:28:55,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:28:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:28:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:28:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:28:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:28:55,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-07-20 11:28:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:28:55,259 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:28:55,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:28:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:28:55,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:28:55,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:28:55,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:28:55,544 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 11:28:55,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:28:55,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:28:55,545 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:28:55,545 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:28:55,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:28:55,546 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 11:28:55,546 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 5 11) the Hoare annotation is: true [2020-07-20 11:28:55,549 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 5 11) no Hoare annotation was computed. [2020-07-20 11:28:55,549 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 5 11) no Hoare annotation was computed. [2020-07-20 11:28:55,550 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 11:28:55,550 INFO L268 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-07-20 11:28:55,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:28:55 BoogieIcfgContainer [2020-07-20 11:28:55,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:28:55,569 INFO L168 Benchmark]: Toolchain (without parser) took 1039.89 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 103.8 MB in the beginning and 151.8 MB in the end (delta: -48.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:55,570 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 11:28:55,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.36 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 94.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:55,574 INFO L168 Benchmark]: Boogie Preprocessor took 23.14 ms. Allocated memory is still 138.4 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:55,575 INFO L168 Benchmark]: RCFGBuilder took 253.58 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 173.8 MB in the end (delta: -80.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:55,580 INFO L168 Benchmark]: TraceAbstraction took 555.57 ms. Allocated memory is still 202.4 MB. Free memory was 173.1 MB in the beginning and 151.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:28:55,588 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 201.36 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 94.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.14 ms. Allocated memory is still 138.4 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.58 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 173.8 MB in the end (delta: -80.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 555.57 ms. Allocated memory is still 202.4 MB. Free memory was 173.1 MB in the beginning and 151.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 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 3 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 12 ConjunctsInSsa, 1 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...