/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_14-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:13:29,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:13:29,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:13:29,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:13:29,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:13:29,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:13:29,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:13:29,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:13:29,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:13:29,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:13:29,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:13:29,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:13:29,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:13:29,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:13:29,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:13:29,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:13:29,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:13:29,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:13:29,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:13:29,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:13:29,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:13:29,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:13:29,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:13:29,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:13:29,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:13:29,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:13:29,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:13:29,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:13:29,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:13:29,297 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:13:29,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:13:29,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:13:29,300 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:13:29,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:13:29,301 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:13:29,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:13:29,301 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:13:29,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:13:29,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:13:29,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:13:29,302 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:13:29,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:13:29,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:13:29,303 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:13:29,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:13:29,305 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:13:29,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:13:29,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:13:29,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:13:29,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:13:29,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:13:29,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:13:29,307 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:13:29,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:13:29,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:13:29,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:13:29,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:13:29,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:13:29,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:13:29,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:13:29,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:13:29,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:13:29,310 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:13:29,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:13:29,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:13:29,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:13:29,312 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:13:29,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:13:29,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:13:29,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:13:29,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:13:29,643 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:13:29,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2019-11-24 04:13:29,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28739ce1f/1aa1245aae5b4ffe90f1ad8bbff7e458/FLAG8a42e61af [2019-11-24 04:13:30,120 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:13:30,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_14-2.c [2019-11-24 04:13:30,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28739ce1f/1aa1245aae5b4ffe90f1ad8bbff7e458/FLAG8a42e61af [2019-11-24 04:13:30,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28739ce1f/1aa1245aae5b4ffe90f1ad8bbff7e458 [2019-11-24 04:13:30,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:13:30,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:13:30,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:13:30,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:13:30,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:13:30,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:13:30" (1/1) ... [2019-11-24 04:13:30,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1260a1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:30, skipping insertion in model container [2019-11-24 04:13:30,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:13:30" (1/1) ... [2019-11-24 04:13:30,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:13:30,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:13:30,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:13:30,895 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:13:30,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:13:31,026 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:13:31,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31 WrapperNode [2019-11-24 04:13:31,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:13:31,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:13:31,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:13:31,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:13:31,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:13:31,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:13:31,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:13:31,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:13:31,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (1/1) ... [2019-11-24 04:13:31,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:13:31,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:13:31,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:13:31,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:13:31,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (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 [2019-11-24 04:13:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:13:31,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:13:31,914 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:13:31,914 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-24 04:13:31,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:13:31 BoogieIcfgContainer [2019-11-24 04:13:31,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:13:31,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:13:31,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:13:31,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:13:31,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:13:30" (1/3) ... [2019-11-24 04:13:31,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ff7ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:13:31, skipping insertion in model container [2019-11-24 04:13:31,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:31" (2/3) ... [2019-11-24 04:13:31,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ff7ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:13:31, skipping insertion in model container [2019-11-24 04:13:31,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:13:31" (3/3) ... [2019-11-24 04:13:31,924 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2019-11-24 04:13:31,934 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:13:31,940 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:13:31,950 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:13:31,974 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:13:31,974 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:13:31,974 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:13:31,975 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:13:31,975 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:13:31,975 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:13:31,975 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:13:31,975 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:13:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-24 04:13:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:13:31,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:31,996 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:13:31,996 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash 934198341, now seen corresponding path program 1 times [2019-11-24 04:13:32,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:32,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94112544] [2019-11-24 04:13:32,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:13:32,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94112544] [2019-11-24 04:13:32,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:32,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:32,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702837823] [2019-11-24 04:13:32,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:32,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:32,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:32,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:32,254 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-24 04:13:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:32,334 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2019-11-24 04:13:32,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:32,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-24 04:13:32,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:32,354 INFO L225 Difference]: With dead ends: 74 [2019-11-24 04:13:32,354 INFO L226 Difference]: Without dead ends: 63 [2019-11-24 04:13:32,360 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-24 04:13:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2019-11-24 04:13:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 04:13:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2019-11-24 04:13:32,421 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2019-11-24 04:13:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:32,422 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2019-11-24 04:13:32,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2019-11-24 04:13:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:13:32,423 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:32,424 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:13:32,424 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash 934205533, now seen corresponding path program 1 times [2019-11-24 04:13:32,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:32,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474724086] [2019-11-24 04:13:32,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:13:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:13:32,598 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 04:13:32,598 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 04:13:32,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:13:32 BoogieIcfgContainer [2019-11-24 04:13:32,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:13:32,635 INFO L168 Benchmark]: Toolchain (without parser) took 2077.45 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 100.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,637 INFO L168 Benchmark]: CDTParser took 0.20 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: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.64 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 182.0 MB in the end (delta: -78.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.99 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 179.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,641 INFO L168 Benchmark]: Boogie Preprocessor took 58.80 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 178.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,643 INFO L168 Benchmark]: RCFGBuilder took 751.89 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 130.3 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,644 INFO L168 Benchmark]: TraceAbstraction took 714.98 ms. Allocated memory is still 202.9 MB. Free memory was 130.3 MB in the beginning and 100.5 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:32,655 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 470.64 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 182.0 MB in the end (delta: -78.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.99 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 179.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.80 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 178.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 751.89 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 130.3 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 714.98 ms. Allocated memory is still 202.9 MB. Free memory was 130.3 MB in the beginning and 100.5 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 217]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L49] int cond; [L51] COND TRUE 1 [L52] cond = __VERIFIER_nondet_int() [L53] COND FALSE !(cond == 0) [L56] lk1 = 0 [L58] lk2 = 0 [L60] lk3 = 0 [L62] lk4 = 0 [L64] lk5 = 0 [L66] lk6 = 0 [L68] lk7 = 0 [L70] lk8 = 0 [L72] lk9 = 0 [L74] lk10 = 0 [L76] lk11 = 0 [L78] lk12 = 0 [L80] lk13 = 0 [L82] lk14 = 0 [L86] COND FALSE !(p1 != 0) [L90] COND FALSE !(p2 != 0) [L94] COND FALSE !(p3 != 0) [L98] COND TRUE p4 != 0 [L99] lk4 = 1 [L102] COND TRUE p5 != 0 [L103] lk5 = 1 [L106] COND FALSE !(p6 != 0) [L110] COND TRUE p7 != 0 [L111] lk7 = 1 [L114] COND TRUE p8 != 0 [L115] lk8 = 1 [L118] COND FALSE !(p9 != 0) [L122] COND TRUE p10 != 0 [L123] lk10 = 1 [L126] COND TRUE p11 != 0 [L127] lk11 = 1 [L130] COND FALSE !(p12 != 0) [L134] COND TRUE p13 != 0 [L135] lk13 = 1 [L138] COND FALSE !(p14 != 0) [L144] COND FALSE !(p1 != 0) [L149] COND FALSE !(p2 != 0) [L217] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 59 SDslu, 114 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...