/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_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:13:33,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:13:33,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:13:33,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:13:33,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:13:33,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:13:33,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:13:33,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:13:33,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:13:33,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:13:33,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:13:33,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:13:33,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:13:33,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:13:33,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:13:33,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:13:33,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:13:33,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:13:33,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:13:33,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:13:33,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:13:33,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:13:33,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:13:33,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:13:33,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:13:33,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:13:33,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:13:33,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:13:33,434 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 04:13:33,461 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:13:33,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:13:33,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:13:33,463 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:13:33,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:13:33,463 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:13:33,463 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:13:33,464 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:13:33,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:13:33,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:13:33,464 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:13:33,464 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:13:33,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:13:33,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:13:33,465 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:13:33,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:13:33,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:13:33,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:13:33,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:13:33,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:13:33,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:13:33,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:13:33,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:13:33,468 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:13:33,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:13:33,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:13:33,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:13:33,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:13:33,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:13:33,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:13:33,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:13:33,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:13:33,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:13:33,470 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:13:33,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:13:33,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:13:33,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:13:33,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:13:33,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:13:33,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:13:33,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:13:33,781 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:13:33,781 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:13:33,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2019-11-24 04:13:33,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b887e1512/9c22bf43e6d24ae68b9bdbb792545d1e/FLAGe04ddae9a [2019-11-24 04:13:34,299 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:13:34,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c [2019-11-24 04:13:34,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b887e1512/9c22bf43e6d24ae68b9bdbb792545d1e/FLAGe04ddae9a [2019-11-24 04:13:34,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b887e1512/9c22bf43e6d24ae68b9bdbb792545d1e [2019-11-24 04:13:34,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:13:34,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:13:34,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:13:34,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:13:34,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:13:34,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:34,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9ac29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34, skipping insertion in model container [2019-11-24 04:13:34,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:34,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:13:34,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:13:34,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:13:34,883 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:13:34,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:13:34,917 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:13:34,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34 WrapperNode [2019-11-24 04:13:34,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:13:34,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:13:34,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:13:34,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:13:34,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:34,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:13:35,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:13:35,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:13:35,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:13:35,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (1/1) ... [2019-11-24 04:13:35,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:13:35,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:13:35,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:13:35,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:13:35,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (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 04:13:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:13:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:13:35,563 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:13:35,563 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-24 04:13:35,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:13:35 BoogieIcfgContainer [2019-11-24 04:13:35,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:13:35,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:13:35,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:13:35,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:13:35,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:13:34" (1/3) ... [2019-11-24 04:13:35,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e3a26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:13:35, skipping insertion in model container [2019-11-24 04:13:35,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:34" (2/3) ... [2019-11-24 04:13:35,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e3a26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:13:35, skipping insertion in model container [2019-11-24 04:13:35,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:13:35" (3/3) ... [2019-11-24 04:13:35,573 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2019-11-24 04:13:35,583 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:13:35,589 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:13:35,599 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:13:35,624 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:13:35,624 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:13:35,625 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:13:35,625 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:13:35,625 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:13:35,625 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:13:35,625 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:13:35,625 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:13:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-24 04:13:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:13:35,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:35,648 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:13:35,649 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash 929622357, now seen corresponding path program 1 times [2019-11-24 04:13:35,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:35,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698057121] [2019-11-24 04:13:35,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:35,839 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 04:13:35,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698057121] [2019-11-24 04:13:35,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:35,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:35,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001807206] [2019-11-24 04:13:35,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:35,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:35,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:35,869 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-11-24 04:13:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:35,946 INFO L93 Difference]: Finished difference Result 42 states and 65 transitions. [2019-11-24 04:13:35,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:35,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-24 04:13:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:35,963 INFO L225 Difference]: With dead ends: 42 [2019-11-24 04:13:35,963 INFO L226 Difference]: Without dead ends: 31 [2019-11-24 04:13:35,968 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 04:13:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-24 04:13:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2019-11-24 04:13:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:13:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2019-11-24 04:13:36,018 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2019-11-24 04:13:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:36,019 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2019-11-24 04:13:36,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2019-11-24 04:13:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:13:36,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:36,020 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:36,021 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1246263362, now seen corresponding path program 1 times [2019-11-24 04:13:36,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:36,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812530390] [2019-11-24 04:13:36,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:36,121 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 04:13:36,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812530390] [2019-11-24 04:13:36,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:36,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:36,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917541373] [2019-11-24 04:13:36,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:36,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:36,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:36,125 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 4 states. [2019-11-24 04:13:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:36,152 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2019-11-24 04:13:36,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:36,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 04:13:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:36,153 INFO L225 Difference]: With dead ends: 31 [2019-11-24 04:13:36,153 INFO L226 Difference]: Without dead ends: 29 [2019-11-24 04:13:36,155 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 04:13:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-24 04:13:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2019-11-24 04:13:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:13:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2019-11-24 04:13:36,160 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 7 [2019-11-24 04:13:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:36,160 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-11-24 04:13:36,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 26 transitions. [2019-11-24 04:13:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:13:36,161 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:36,161 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:36,162 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:36,162 INFO L82 PathProgramCache]: Analyzing trace with hash 20756426, now seen corresponding path program 1 times [2019-11-24 04:13:36,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:36,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642466090] [2019-11-24 04:13:36,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:36,215 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 04:13:36,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642466090] [2019-11-24 04:13:36,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:36,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:36,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366668674] [2019-11-24 04:13:36,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:36,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:36,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:36,220 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. Second operand 4 states. [2019-11-24 04:13:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:36,248 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2019-11-24 04:13:36,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:36,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-24 04:13:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:36,249 INFO L225 Difference]: With dead ends: 29 [2019-11-24 04:13:36,249 INFO L226 Difference]: Without dead ends: 27 [2019-11-24 04:13:36,250 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 04:13:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-24 04:13:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2019-11-24 04:13:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:13:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2019-11-24 04:13:36,255 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 8 [2019-11-24 04:13:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:36,255 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2019-11-24 04:13:36,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2019-11-24 04:13:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:13:36,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:36,256 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:36,256 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:36,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:36,257 INFO L82 PathProgramCache]: Analyzing trace with hash 643664531, now seen corresponding path program 1 times [2019-11-24 04:13:36,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:36,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076691351] [2019-11-24 04:13:36,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:36,294 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 04:13:36,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076691351] [2019-11-24 04:13:36,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:36,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:36,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671332612] [2019-11-24 04:13:36,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:36,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:36,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:36,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:36,297 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand 4 states. [2019-11-24 04:13:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:36,317 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-11-24 04:13:36,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:36,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 04:13:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:36,319 INFO L225 Difference]: With dead ends: 27 [2019-11-24 04:13:36,319 INFO L226 Difference]: Without dead ends: 25 [2019-11-24 04:13:36,320 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 04:13:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-24 04:13:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2019-11-24 04:13:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:13:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-11-24 04:13:36,323 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 9 [2019-11-24 04:13:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:36,324 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-24 04:13:36,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2019-11-24 04:13:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:13:36,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:36,325 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:36,325 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1521020353, now seen corresponding path program 1 times [2019-11-24 04:13:36,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:36,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976304799] [2019-11-24 04:13:36,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:36,373 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 04:13:36,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976304799] [2019-11-24 04:13:36,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:36,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:36,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085743587] [2019-11-24 04:13:36,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:36,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:36,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:36,377 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand 4 states. [2019-11-24 04:13:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:36,401 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-11-24 04:13:36,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:36,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-24 04:13:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:36,402 INFO L225 Difference]: With dead ends: 25 [2019-11-24 04:13:36,402 INFO L226 Difference]: Without dead ends: 23 [2019-11-24 04:13:36,403 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 04:13:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-24 04:13:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2019-11-24 04:13:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:13:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2019-11-24 04:13:36,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 10 [2019-11-24 04:13:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:36,409 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2019-11-24 04:13:36,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2019-11-24 04:13:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:13:36,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:36,411 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:36,411 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash 93225320, now seen corresponding path program 1 times [2019-11-24 04:13:36,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:36,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920116240] [2019-11-24 04:13:36,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:36,508 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 04:13:36,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920116240] [2019-11-24 04:13:36,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:36,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:36,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892283195] [2019-11-24 04:13:36,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:36,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:36,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:36,511 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand 4 states. [2019-11-24 04:13:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:36,529 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2019-11-24 04:13:36,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:36,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-24 04:13:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:36,530 INFO L225 Difference]: With dead ends: 19 [2019-11-24 04:13:36,530 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:13:36,531 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 04:13:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:13:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:13:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:13:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:13:36,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-24 04:13:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:36,533 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:13:36,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:13:36,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:13:36,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:13:36,554 INFO L444 ceAbstractionStarter]: For program point L93(line 93) no Hoare annotation was computed. [2019-11-24 04:13:36,554 INFO L444 ceAbstractionStarter]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2019-11-24 04:13:36,555 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:13:36,555 INFO L444 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-11-24 04:13:36,555 INFO L447 ceAbstractionStarter]: At program point L103(lines 5 107) the Hoare annotation is: true [2019-11-24 04:13:36,555 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-11-24 04:13:36,555 INFO L444 ceAbstractionStarter]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2019-11-24 04:13:36,556 INFO L444 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2019-11-24 04:13:36,556 INFO L444 ceAbstractionStarter]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2019-11-24 04:13:36,556 INFO L447 ceAbstractionStarter]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2019-11-24 04:13:36,556 INFO L447 ceAbstractionStarter]: At program point L106(lines 4 107) the Hoare annotation is: true [2019-11-24 04:13:36,556 INFO L444 ceAbstractionStarter]: For program point L73(line 73) no Hoare annotation was computed. [2019-11-24 04:13:36,557 INFO L444 ceAbstractionStarter]: For program point L98(line 98) no Hoare annotation was computed. [2019-11-24 04:13:36,557 INFO L440 ceAbstractionStarter]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2019-11-24 04:13:36,557 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2019-11-24 04:13:36,557 INFO L444 ceAbstractionStarter]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2019-11-24 04:13:36,557 INFO L444 ceAbstractionStarter]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2019-11-24 04:13:36,558 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:13:36,558 INFO L444 ceAbstractionStarter]: For program point L83(line 83) no Hoare annotation was computed. [2019-11-24 04:13:36,558 INFO L444 ceAbstractionStarter]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2019-11-24 04:13:36,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:13:36 BoogieIcfgContainer [2019-11-24 04:13:36,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:13:36,575 INFO L168 Benchmark]: Toolchain (without parser) took 1897.89 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 103.4 MB in the beginning and 95.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,576 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.44 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 93.1 MB in the beginning and 183.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,579 INFO L168 Benchmark]: Boogie Preprocessor took 20.93 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 181.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,581 INFO L168 Benchmark]: RCFGBuilder took 499.63 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 157.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,582 INFO L168 Benchmark]: TraceAbstraction took 1004.10 ms. Allocated memory is still 203.9 MB. Free memory was 157.5 MB in the beginning and 95.4 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:36,592 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 125.44 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 93.1 MB in the beginning and 183.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.93 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 181.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.63 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 157.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1004.10 ms. Allocated memory is still 203.9 MB. Free memory was 157.5 MB in the beginning and 95.4 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 116 SDslu, 193 SDs, 0 SdLazy, 54 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 6 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...