/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_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 21:56:28,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 21:56:28,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 21:56:28,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 21:56:28,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 21:56:28,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 21:56:28,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 21:56:28,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 21:56:28,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 21:56:28,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 21:56:28,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 21:56:28,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 21:56:28,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 21:56:28,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 21:56:28,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 21:56:28,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 21:56:28,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 21:56:28,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 21:56:28,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 21:56:28,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 21:56:28,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 21:56:28,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 21:56:28,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 21:56:28,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 21:56:28,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 21:56:28,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 21:56:28,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 21:56:28,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 21:56:28,119 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 21:56:28,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 21:56:28,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 21:56:28,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 21:56:28,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 21:56:28,134 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 21:56:28,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 21:56:28,135 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 21:56:28,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 21:56:28,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 21:56:28,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 21:56:28,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 21:56:28,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 21:56:28,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 21:56:28,136 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 21:56:28,136 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 21:56:28,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 21:56:28,137 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 21:56:28,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 21:56:28,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 21:56:28,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 21:56:28,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 21:56:28,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 21:56:28,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 21:56:28,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 21:56:28,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 21:56:28,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 21:56:28,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 21:56:28,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 21:56:28,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 21:56:28,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 21:56:28,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 21:56:28,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 21:56:28,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 21:56:28,426 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 21:56:28,426 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 21:56:28,427 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-11-23 21:56:28,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3b8ad544/c49a7ad7aecf41b5ab771df4c86d28b6/FLAG9d835be7b [2019-11-23 21:56:28,979 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 21:56:28,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-11-23 21:56:28,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3b8ad544/c49a7ad7aecf41b5ab771df4c86d28b6/FLAG9d835be7b [2019-11-23 21:56:29,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3b8ad544/c49a7ad7aecf41b5ab771df4c86d28b6 [2019-11-23 21:56:29,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 21:56:29,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 21:56:29,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:29,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 21:56:29,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 21:56:29,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461c1d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29, skipping insertion in model container [2019-11-23 21:56:29,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 21:56:29,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 21:56:29,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:29,613 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 21:56:29,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:29,645 INFO L208 MainTranslator]: Completed translation [2019-11-23 21:56:29,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29 WrapperNode [2019-11-23 21:56:29,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:29,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:29,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 21:56:29,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 21:56:29,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:29,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 21:56:29,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 21:56:29,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 21:56:29,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (1/1) ... [2019-11-23 21:56:29,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 21:56:29,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 21:56:29,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 21:56:29,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 21:56:29,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (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 21:56:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 21:56:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 21:56:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 21:56:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 21:56:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 21:56:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 21:56:30,051 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 21:56:30,052 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-23 21:56:30,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:30 BoogieIcfgContainer [2019-11-23 21:56:30,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 21:56:30,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 21:56:30,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 21:56:30,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 21:56:30,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:56:29" (1/3) ... [2019-11-23 21:56:30,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc85209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:30, skipping insertion in model container [2019-11-23 21:56:30,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:29" (2/3) ... [2019-11-23 21:56:30,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc85209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:30, skipping insertion in model container [2019-11-23 21:56:30,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:30" (3/3) ... [2019-11-23 21:56:30,086 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2019-11-23 21:56:30,108 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 21:56:30,125 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-23 21:56:30,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-23 21:56:30,168 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 21:56:30,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 21:56:30,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 21:56:30,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 21:56:30,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 21:56:30,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 21:56:30,170 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 21:56:30,170 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 21:56:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 21:56:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 21:56:30,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:30,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 21:56:30,191 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:30,197 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-23 21:56:30,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:30,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499733770] [2019-11-23 21:56:30,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:30,366 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 21:56:30,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499733770] [2019-11-23 21:56:30,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:30,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 21:56:30,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018892547] [2019-11-23 21:56:30,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 21:56:30,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:30,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 21:56:30,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 21:56:30,385 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-23 21:56:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:30,403 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-23 21:56:30,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 21:56:30,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-23 21:56:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:30,413 INFO L225 Difference]: With dead ends: 25 [2019-11-23 21:56:30,413 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 21:56:30,416 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 21:56:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 21:56:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 21:56:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 21:56:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-23 21:56:30,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-23 21:56:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:30,444 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-23 21:56:30,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 21:56:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-23 21:56:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 21:56:30,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:30,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:56:30,446 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-23 21:56:30,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:30,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777502770] [2019-11-23 21:56:30,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:30,533 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 21:56:30,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777502770] [2019-11-23 21:56:30,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:30,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 21:56:30,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141762260] [2019-11-23 21:56:30,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 21:56:30,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 21:56:30,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 21:56:30,537 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 5 states. [2019-11-23 21:56:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:30,586 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-23 21:56:30,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 21:56:30,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-23 21:56:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:30,587 INFO L225 Difference]: With dead ends: 8 [2019-11-23 21:56:30,587 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 21:56:30,588 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 21:56:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 21:56:30,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 21:56:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 21:56:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 21:56:30,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-23 21:56:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:30,590 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 21:56:30,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 21:56:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 21:56:30,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 21:56:30,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 21:56:30,600 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 21:56:30,600 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-11-23 21:56:30,600 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 21:56:30,601 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 21:56:30,601 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 21:56:30,601 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2019-11-23 21:56:30,601 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-11-23 21:56:30,601 INFO L444 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-23 21:56:30,602 INFO L444 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-11-23 21:56:30,603 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 26) no Hoare annotation was computed. [2019-11-23 21:56:30,604 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-23 21:56:30,605 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-23 21:56:30,605 INFO L444 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-23 21:56:30,606 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-23 21:56:30,606 INFO L444 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-11-23 21:56:30,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:56:30 BoogieIcfgContainer [2019-11-23 21:56:30,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 21:56:30,614 INFO L168 Benchmark]: Toolchain (without parser) took 1199.67 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 104.6 MB in the beginning and 138.6 MB in the end (delta: -34.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,616 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.77 ms. Allocated memory is still 146.3 MB. Free memory was 104.4 MB in the beginning and 94.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.86 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 94.7 MB in the beginning and 182.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,620 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 181.9 MB in the end (delta: 648.2 kB). Peak memory consumption was 648.2 kB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,621 INFO L168 Benchmark]: RCFGBuilder took 260.51 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 169.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,623 INFO L168 Benchmark]: TraceAbstraction took 552.53 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 138.6 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:30,640 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.77 ms. Allocated memory is still 146.3 MB. Free memory was 104.4 MB in the beginning and 94.7 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 120.86 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 94.7 MB in the beginning and 182.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 181.9 MB in the end (delta: 648.2 kB). Peak memory consumption was 648.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 260.51 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 169.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 552.53 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 138.6 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 14]: 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: 0.0s, 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...