/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 21:56:29,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 21:56:29,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 21:56:29,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 21:56:29,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 21:56:29,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 21:56:29,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 21:56:29,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 21:56:29,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 21:56:29,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 21:56:29,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 21:56:29,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 21:56:29,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 21:56:29,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 21:56:29,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 21:56:29,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 21:56:29,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 21:56:29,320 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 [2019-11-23 21:56:29,334 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 21:56:29,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 21:56:29,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 21:56:29,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 21:56:29,336 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 21:56:29,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 21:56:29,337 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 21:56:29,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 21:56:29,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 21:56:29,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 21:56:29,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 21:56:29,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 21:56:29,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 21:56:29,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 21:56:29,338 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 21:56:29,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 21:56:29,338 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 21:56:29,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 21:56:29,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 21:56:29,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 21:56:29,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 21:56:29,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 21:56:29,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 21:56:29,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 21:56:29,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 21:56:29,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 21:56:29,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 21:56:29,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 21:56:29,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 21:56:29,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 21:56:29,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 21:56:29,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 21:56:29,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 21:56:29,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 21:56:29,625 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 21:56:29,626 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2019-11-23 21:56:29,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82ee9176/e888e44dedbc434783d01c53f86218c8/FLAG0cb08661b [2019-11-23 21:56:30,155 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 21:56:30,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2019-11-23 21:56:30,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82ee9176/e888e44dedbc434783d01c53f86218c8/FLAG0cb08661b [2019-11-23 21:56:30,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82ee9176/e888e44dedbc434783d01c53f86218c8 [2019-11-23 21:56:30,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 21:56:30,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 21:56:30,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:30,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 21:56:30,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 21:56:30,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ca7a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30, skipping insertion in model container [2019-11-23 21:56:30,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 21:56:30,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 21:56:30,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:30,771 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 21:56:30,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:30,802 INFO L208 MainTranslator]: Completed translation [2019-11-23 21:56:30,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30 WrapperNode [2019-11-23 21:56:30,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:30,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:30,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 21:56:30,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 21:56:30,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:30,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 21:56:30,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 21:56:30,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 21:56:30,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (1/1) ... [2019-11-23 21:56:30,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 21:56:30,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 21:56:30,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 21:56:30,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 21:56:30,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (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 [2019-11-23 21:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 21:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 21:56:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 21:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 21:56:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 21:56:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 21:56:31,186 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 21:56:31,186 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-23 21:56:31,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:31 BoogieIcfgContainer [2019-11-23 21:56:31,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 21:56:31,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 21:56:31,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 21:56:31,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 21:56:31,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:56:30" (1/3) ... [2019-11-23 21:56:31,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8d5d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:31, skipping insertion in model container [2019-11-23 21:56:31,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:30" (2/3) ... [2019-11-23 21:56:31,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8d5d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:31, skipping insertion in model container [2019-11-23 21:56:31,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:31" (3/3) ... [2019-11-23 21:56:31,214 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2019-11-23 21:56:31,227 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 21:56:31,255 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-23 21:56:31,281 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-23 21:56:31,306 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 21:56:31,306 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 21:56:31,306 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 21:56:31,306 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 21:56:31,306 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 21:56:31,307 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 21:56:31,307 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 21:56:31,307 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 21:56:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 21:56:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 21:56:31,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:31,326 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 21:56:31,327 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:31,331 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-23 21:56:31,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:31,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351253487] [2019-11-23 21:56:31,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:56:31,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351253487] [2019-11-23 21:56:31,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:31,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 21:56:31,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349432479] [2019-11-23 21:56:31,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 21:56:31,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:31,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 21:56:31,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 21:56:31,513 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-23 21:56:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:31,531 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-23 21:56:31,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 21:56:31,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-23 21:56:31,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:31,542 INFO L225 Difference]: With dead ends: 25 [2019-11-23 21:56:31,542 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 21:56:31,545 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 21:56:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 21:56:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 21:56:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 21:56:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-23 21:56:31,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-23 21:56:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:31,572 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-23 21:56:31,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 21:56:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-23 21:56:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 21:56:31,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:31,574 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:56:31,574 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:31,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-23 21:56:31,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:31,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56646299] [2019-11-23 21:56:31,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:56:31,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56646299] [2019-11-23 21:56:31,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:31,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 21:56:31,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861665887] [2019-11-23 21:56:31,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 21:56:31,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 21:56:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 21:56:31,666 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 5 states. [2019-11-23 21:56:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:31,723 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-23 21:56:31,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 21:56:31,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-23 21:56:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:31,724 INFO L225 Difference]: With dead ends: 8 [2019-11-23 21:56:31,724 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 21:56:31,725 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-23 21:56:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 21:56:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 21:56:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 21:56:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 21:56:31,726 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-23 21:56:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:31,727 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 21:56:31,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 21:56:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 21:56:31,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 21:56:31,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 21:56:31,736 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 21:56:31,737 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 43) no Hoare annotation was computed. [2019-11-23 21:56:31,737 INFO L444 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-11-23 21:56:31,737 INFO L444 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-23 21:56:31,737 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-23 21:56:31,737 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-11-23 21:56:31,738 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-23 21:56:31,738 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-23 21:56:31,738 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-23 21:56:31,738 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-23 21:56:31,739 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-23 21:56:31,739 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 21:56:31,739 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 21:56:31,739 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 21:56:31,740 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-23 21:56:31,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:56:31 BoogieIcfgContainer [2019-11-23 21:56:31,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 21:56:31,746 INFO L168 Benchmark]: Toolchain (without parser) took 1207.50 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 135.4 MB in the end (delta: -33.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,747 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.24 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.91 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.2 MB in the beginning and 179.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,752 INFO L168 Benchmark]: Boogie Preprocessor took 22.64 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 178.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,753 INFO L168 Benchmark]: RCFGBuilder took 257.44 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 165.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,755 INFO L168 Benchmark]: TraceAbstraction took 553.25 ms. Allocated memory is still 200.8 MB. Free memory was 165.9 MB in the beginning and 135.4 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:31,771 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.24 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 104.91 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.2 MB in the beginning and 179.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.64 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 178.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.44 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 165.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 553.25 ms. Allocated memory is still 200.8 MB. Free memory was 165.9 MB in the beginning and 135.4 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 3 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...