/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_8.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:13:35,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:13:35,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:13:35,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:13:35,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:13:35,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:13:35,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:13:35,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:13:35,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:13:35,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:13:35,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:13:35,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:13:35,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:13:35,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:13:35,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:13:35,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:13:35,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:13:35,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:13:35,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:13:35,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:13:35,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:13:35,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:13:35,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:13:35,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:13:35,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 04:13:35,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 04:13:35,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 04:13:35,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 04:13:35,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 04:13:35,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 04:13:35,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:13:35,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:13:35,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:13:35,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:13:35,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:13:35,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:13:35,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:13:35,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:13:35,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:13:35,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:13:35,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:13:35,126 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 04:13:35,144 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:13:35,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:13:35,145 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:13:35,145 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:13:35,146 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:13:35,146 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:13:35,146 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:13:35,146 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:13:35,146 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:13:35,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:13:35,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:13:35,147 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:13:35,147 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:13:35,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:13:35,148 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:13:35,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:13:35,150 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:13:35,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:13:35,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:13:35,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:13:35,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:13:35,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:13:35,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:13:35,151 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:13:35,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:13:35,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:13:35,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:13:35,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:13:35,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:13:35,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:13:35,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:13:35,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:13:35,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:13:35,154 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:13:35,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:13:35,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:13:35,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:13:35,156 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:13:35,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:13:35,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:13:35,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:13:35,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:13:35,480 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:13:35,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_8.c [2019-11-24 04:13:35,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a3a59978/3847254f76944285968252643ad41501/FLAGbdb605cfa [2019-11-24 04:13:36,062 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:13:36,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_8.c [2019-11-24 04:13:36,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a3a59978/3847254f76944285968252643ad41501/FLAGbdb605cfa [2019-11-24 04:13:36,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a3a59978/3847254f76944285968252643ad41501 [2019-11-24 04:13:36,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:13:36,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:13:36,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:13:36,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:13:36,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:13:36,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bcd91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36, skipping insertion in model container [2019-11-24 04:13:36,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:13:36,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:13:36,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:13:36,713 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:13:36,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:13:36,834 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:13:36,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36 WrapperNode [2019-11-24 04:13:36,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:13:36,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:13:36,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:13:36,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:13:36,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:13:36,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:13:36,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:13:36,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:13:36,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (1/1) ... [2019-11-24 04:13:36,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:13:36,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:13:36,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:13:36,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:13:36,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (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 04:13:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:13:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:13:37,473 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:13:37,473 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-24 04:13:37,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:13:37 BoogieIcfgContainer [2019-11-24 04:13:37,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:13:37,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:13:37,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:13:37,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:13:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:13:36" (1/3) ... [2019-11-24 04:13:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ace97f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:13:37, skipping insertion in model container [2019-11-24 04:13:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:13:36" (2/3) ... [2019-11-24 04:13:37,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ace97f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:13:37, skipping insertion in model container [2019-11-24 04:13:37,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:13:37" (3/3) ... [2019-11-24 04:13:37,491 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2019-11-24 04:13:37,500 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:13:37,506 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:13:37,516 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:13:37,538 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:13:37,538 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:13:37,539 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:13:37,539 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:13:37,539 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:13:37,539 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:13:37,539 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:13:37,540 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:13:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-24 04:13:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:13:37,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:37,558 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:13:37,558 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:37,563 INFO L82 PathProgramCache]: Analyzing trace with hash 930766353, now seen corresponding path program 1 times [2019-11-24 04:13:37,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:37,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931576084] [2019-11-24 04:13:37,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:37,750 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 04:13:37,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931576084] [2019-11-24 04:13:37,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:37,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:37,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348204793] [2019-11-24 04:13:37,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:37,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:37,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:37,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:37,773 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-24 04:13:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:37,849 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2019-11-24 04:13:37,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:37,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-24 04:13:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:37,862 INFO L225 Difference]: With dead ends: 50 [2019-11-24 04:13:37,863 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 04:13:37,867 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 04:13:37,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 04:13:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 21. [2019-11-24 04:13:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2019-11-24 04:13:37,903 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 6 [2019-11-24 04:13:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:37,903 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2019-11-24 04:13:37,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2019-11-24 04:13:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:13:37,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:37,904 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:37,905 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:37,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1210800134, now seen corresponding path program 1 times [2019-11-24 04:13:37,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:37,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747152347] [2019-11-24 04:13:37,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,002 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 04:13:38,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747152347] [2019-11-24 04:13:38,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717673622] [2019-11-24 04:13:38,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,006 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 4 states. [2019-11-24 04:13:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,037 INFO L93 Difference]: Finished difference Result 39 states and 63 transitions. [2019-11-24 04:13:38,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 04:13:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,042 INFO L225 Difference]: With dead ends: 39 [2019-11-24 04:13:38,042 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 04:13:38,043 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 04:13:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 04:13:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2019-11-24 04:13:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 34 transitions. [2019-11-24 04:13:38,051 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 34 transitions. Word has length 7 [2019-11-24 04:13:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,052 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 34 transitions. [2019-11-24 04:13:38,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2019-11-24 04:13:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:13:38,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:38,052 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:38,053 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115846, now seen corresponding path program 1 times [2019-11-24 04:13:38,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:38,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748643452] [2019-11-24 04:13:38,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,122 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 04:13:38,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748643452] [2019-11-24 04:13:38,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902536258] [2019-11-24 04:13:38,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,125 INFO L87 Difference]: Start difference. First operand 21 states and 34 transitions. Second operand 4 states. [2019-11-24 04:13:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,149 INFO L93 Difference]: Finished difference Result 37 states and 58 transitions. [2019-11-24 04:13:38,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-24 04:13:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,151 INFO L225 Difference]: With dead ends: 37 [2019-11-24 04:13:38,151 INFO L226 Difference]: Without dead ends: 35 [2019-11-24 04:13:38,152 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 04:13:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-24 04:13:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2019-11-24 04:13:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2019-11-24 04:13:38,156 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 8 [2019-11-24 04:13:38,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,157 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2019-11-24 04:13:38,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2019-11-24 04:13:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:13:38,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:38,158 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:38,158 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash 364067535, now seen corresponding path program 1 times [2019-11-24 04:13:38,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:38,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320916573] [2019-11-24 04:13:38,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,220 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 04:13:38,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320916573] [2019-11-24 04:13:38,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87174940] [2019-11-24 04:13:38,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,223 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 4 states. [2019-11-24 04:13:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,249 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2019-11-24 04:13:38,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 04:13:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,250 INFO L225 Difference]: With dead ends: 35 [2019-11-24 04:13:38,251 INFO L226 Difference]: Without dead ends: 33 [2019-11-24 04:13:38,251 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 04:13:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-24 04:13:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2019-11-24 04:13:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2019-11-24 04:13:38,256 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 9 [2019-11-24 04:13:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,256 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2019-11-24 04:13:38,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2019-11-24 04:13:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:13:38,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:38,258 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:38,258 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:38,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:38,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1598593285, now seen corresponding path program 1 times [2019-11-24 04:13:38,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:38,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071500564] [2019-11-24 04:13:38,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,314 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 04:13:38,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071500564] [2019-11-24 04:13:38,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524542400] [2019-11-24 04:13:38,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,319 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand 4 states. [2019-11-24 04:13:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,347 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2019-11-24 04:13:38,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-24 04:13:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,349 INFO L225 Difference]: With dead ends: 33 [2019-11-24 04:13:38,351 INFO L226 Difference]: Without dead ends: 31 [2019-11-24 04:13:38,351 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 04:13:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-24 04:13:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2019-11-24 04:13:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2019-11-24 04:13:38,358 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2019-11-24 04:13:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,358 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2019-11-24 04:13:38,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2019-11-24 04:13:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:13:38,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:38,360 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:38,360 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:38,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1983431076, now seen corresponding path program 1 times [2019-11-24 04:13:38,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:38,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477222597] [2019-11-24 04:13:38,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,445 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 04:13:38,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477222597] [2019-11-24 04:13:38,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250166621] [2019-11-24 04:13:38,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,448 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2019-11-24 04:13:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,466 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2019-11-24 04:13:38,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-24 04:13:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,467 INFO L225 Difference]: With dead ends: 31 [2019-11-24 04:13:38,467 INFO L226 Difference]: Without dead ends: 29 [2019-11-24 04:13:38,468 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 04:13:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-24 04:13:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2019-11-24 04:13:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-11-24 04:13:38,472 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2019-11-24 04:13:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,472 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-24 04:13:38,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-11-24 04:13:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:13:38,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:38,487 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:38,487 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1357036912, now seen corresponding path program 1 times [2019-11-24 04:13:38,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:38,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986210741] [2019-11-24 04:13:38,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,540 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 04:13:38,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986210741] [2019-11-24 04:13:38,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496664647] [2019-11-24 04:13:38,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,544 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2019-11-24 04:13:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,569 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-24 04:13:38,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-24 04:13:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,572 INFO L225 Difference]: With dead ends: 29 [2019-11-24 04:13:38,572 INFO L226 Difference]: Without dead ends: 27 [2019-11-24 04:13:38,572 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 04:13:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-24 04:13:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-11-24 04:13:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 04:13:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2019-11-24 04:13:38,577 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2019-11-24 04:13:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,577 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-11-24 04:13:38,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2019-11-24 04:13:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:13:38,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:13:38,578 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:13:38,578 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:13:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:13:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash -881312647, now seen corresponding path program 1 times [2019-11-24 04:13:38,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:13:38,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945392329] [2019-11-24 04:13:38,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:13:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:13:38,632 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 04:13:38,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945392329] [2019-11-24 04:13:38,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:13:38,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:13:38,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644851095] [2019-11-24 04:13:38,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:13:38,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:13:38,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:13:38,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:13:38,634 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 4 states. [2019-11-24 04:13:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:13:38,650 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2019-11-24 04:13:38,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:13:38,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-24 04:13:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:13:38,651 INFO L225 Difference]: With dead ends: 23 [2019-11-24 04:13:38,651 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:13:38,652 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 04:13:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:13:38,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:13:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:13:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:13:38,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-24 04:13:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:13:38,653 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:13:38,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:13:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:13:38,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:13:38,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:13:38,675 INFO L444 ceAbstractionStarter]: For program point L126(line 126) no Hoare annotation was computed. [2019-11-24 04:13:38,675 INFO L440 ceAbstractionStarter]: At program point L126-1(lines 5 135) the Hoare annotation is: false [2019-11-24 04:13:38,675 INFO L444 ceAbstractionStarter]: For program point L110-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,675 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:13:38,675 INFO L444 ceAbstractionStarter]: For program point L111(line 111) no Hoare annotation was computed. [2019-11-24 04:13:38,675 INFO L444 ceAbstractionStarter]: For program point L95-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,676 INFO L444 ceAbstractionStarter]: For program point L120-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,676 INFO L444 ceAbstractionStarter]: For program point L96(line 96) no Hoare annotation was computed. [2019-11-24 04:13:38,676 INFO L444 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2019-11-24 04:13:38,676 INFO L444 ceAbstractionStarter]: For program point L105-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,676 INFO L444 ceAbstractionStarter]: For program point L106(line 106) no Hoare annotation was computed. [2019-11-24 04:13:38,676 INFO L447 ceAbstractionStarter]: At program point L131(lines 5 135) the Hoare annotation is: true [2019-11-24 04:13:38,676 INFO L444 ceAbstractionStarter]: For program point L90-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,677 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 133) no Hoare annotation was computed. [2019-11-24 04:13:38,677 INFO L444 ceAbstractionStarter]: For program point L115-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,677 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:13:38,677 INFO L444 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2019-11-24 04:13:38,677 INFO L444 ceAbstractionStarter]: For program point L116(line 116) no Hoare annotation was computed. [2019-11-24 04:13:38,677 INFO L444 ceAbstractionStarter]: For program point L100-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,678 INFO L447 ceAbstractionStarter]: At program point L125-1(lines 33 130) the Hoare annotation is: true [2019-11-24 04:13:38,678 INFO L444 ceAbstractionStarter]: For program point L84-1(lines 33 130) no Hoare annotation was computed. [2019-11-24 04:13:38,678 INFO L447 ceAbstractionStarter]: At program point L134(lines 4 135) the Hoare annotation is: true [2019-11-24 04:13:38,678 INFO L444 ceAbstractionStarter]: For program point L101(line 101) no Hoare annotation was computed. [2019-11-24 04:13:38,678 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 37) no Hoare annotation was computed. [2019-11-24 04:13:38,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:13:38 BoogieIcfgContainer [2019-11-24 04:13:38,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:13:38,690 INFO L168 Benchmark]: Toolchain (without parser) took 2222.27 ms. Allocated memory was 143.7 MB in the beginning and 230.7 MB in the end (delta: 87.0 MB). Free memory was 101.7 MB in the beginning and 181.8 MB in the end (delta: -80.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:38,691 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-24 04:13:38,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.74 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 179.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:38,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 200.3 MB. Free memory was 179.6 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:38,693 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 175.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:38,694 INFO L168 Benchmark]: RCFGBuilder took 576.70 ms. Allocated memory is still 200.3 MB. Free memory was 175.7 MB in the beginning and 147.2 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2019-11-24 04:13:38,695 INFO L168 Benchmark]: TraceAbstraction took 1205.69 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 147.2 MB in the beginning and 181.8 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-24 04:13:38,700 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.74 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 179.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 200.3 MB. Free memory was 179.6 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 175.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 576.70 ms. Allocated memory is still 200.3 MB. Free memory was 175.7 MB in the beginning and 147.2 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1205.69 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 147.2 MB in the beginning and 181.8 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 133]: 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: 33]: 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, 24 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 241 SDtfs, 202 SDslu, 344 SDs, 0 SdLazy, 72 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 7 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, 0.4s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 2844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...