/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/array-examples/standard_init7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:09:42,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:09:42,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:09:42,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:09:42,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:09:42,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:09:42,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:09:42,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:09:42,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:09:42,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:09:42,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:09:42,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:09:42,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:09:42,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:09:42,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:09:42,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:09:42,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:09:42,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:09:42,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:09:42,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:09:42,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:09:42,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:09:42,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:09:42,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:09:42,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:09:42,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:09:42,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:09:42,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:09:42,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:09:42,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:09:42,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:09:42,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:09:42,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:09:42,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:09:42,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:09:42,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:09:42,906 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 [2019-11-23 23:09:42,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:09:42,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:09:42,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:09:42,922 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:09:42,922 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:09:42,922 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:09:42,923 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:09:42,923 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:09:42,923 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:09:42,923 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:09:42,923 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:09:42,924 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:09:42,924 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:09:42,924 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:09:42,924 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:09:42,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:09:42,925 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:09:42,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:09:42,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:09:42,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:09:42,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:09:42,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:09:42,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:09:42,926 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:09:42,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:09:42,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:09:42,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:09:42,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:09:42,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:09:42,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:09:42,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:09:42,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:09:42,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:09:42,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:09:42,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:09:42,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:09:42,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:09:42,929 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:09:43,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:09:43,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:09:43,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:09:43,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:09:43,240 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:09:43,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2019-11-23 23:09:43,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0b6e1e0/66c26f083b5348a096f430f56b25d729/FLAG2610b9ab1 [2019-11-23 23:09:43,763 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:09:43,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2019-11-23 23:09:43,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0b6e1e0/66c26f083b5348a096f430f56b25d729/FLAG2610b9ab1 [2019-11-23 23:09:44,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0b6e1e0/66c26f083b5348a096f430f56b25d729 [2019-11-23 23:09:44,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:09:44,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:09:44,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:09:44,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:09:44,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:09:44,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a4f288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44, skipping insertion in model container [2019-11-23 23:09:44,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:09:44,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:09:44,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:09:44,406 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:09:44,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:09:44,450 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:09:44,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44 WrapperNode [2019-11-23 23:09:44,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:09:44,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:09:44,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:09:44,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:09:44,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:09:44,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:09:44,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:09:44,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:09:44,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... [2019-11-23 23:09:44,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:09:44,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:09:44,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:09:44,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:09:44,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:09:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:09:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:09:44,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:09:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:09:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:09:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:09:45,070 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:09:45,071 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-23 23:09:45,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:09:45 BoogieIcfgContainer [2019-11-23 23:09:45,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:09:45,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:09:45,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:09:45,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:09:45,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:09:44" (1/3) ... [2019-11-23 23:09:45,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7234aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:09:45, skipping insertion in model container [2019-11-23 23:09:45,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:44" (2/3) ... [2019-11-23 23:09:45,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7234aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:09:45, skipping insertion in model container [2019-11-23 23:09:45,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:09:45" (3/3) ... [2019-11-23 23:09:45,080 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2019-11-23 23:09:45,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:09:45,097 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:09:45,105 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:09:45,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:09:45,125 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:09:45,125 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:09:45,126 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:09:45,126 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:09:45,126 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:09:45,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:09:45,126 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:09:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 23:09:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:09:45,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:09:45,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:09:45,144 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:09:45,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:09:45,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1247934023, now seen corresponding path program 1 times [2019-11-23 23:09:45,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:09:45,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172203947] [2019-11-23 23:09:45,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:09:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:09:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:09:45,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172203947] [2019-11-23 23:09:45,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:09:45,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:09:45,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113669225] [2019-11-23 23:09:45,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:09:45,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:09:45,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:09:45,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:09:45,315 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-23 23:09:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:09:45,401 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2019-11-23 23:09:45,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:09:45,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-23 23:09:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:09:45,413 INFO L225 Difference]: With dead ends: 33 [2019-11-23 23:09:45,413 INFO L226 Difference]: Without dead ends: 20 [2019-11-23 23:09:45,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:09:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-23 23:09:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-23 23:09:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-23 23:09:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2019-11-23 23:09:45,449 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 11 [2019-11-23 23:09:45,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:09:45,450 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-23 23:09:45,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:09:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2019-11-23 23:09:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 23:09:45,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:09:45,451 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:09:45,451 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:09:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:09:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -561995005, now seen corresponding path program 1 times [2019-11-23 23:09:45,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:09:45,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613854125] [2019-11-23 23:09:45,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:09:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:09:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:09:45,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613854125] [2019-11-23 23:09:45,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930742936] [2019-11-23 23:09:45,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:09:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:09:45,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:09:45,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:09:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:09:45,618 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:09:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:09:45,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [230973941] [2019-11-23 23:09:45,685 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-23 23:09:45,685 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:09:45,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:09:45,698 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:09:45,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:10:25,602 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 270 [2019-11-23 23:10:29,347 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2019-11-23 23:10:29,549 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 274 [2019-11-23 23:10:29,749 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2019-11-23 23:10:29,886 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 276 [2019-11-23 23:10:31,873 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 280 [2019-11-23 23:10:33,954 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 281 [2019-11-23 23:10:36,239 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 286 [2019-11-23 23:10:41,178 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2019-11-23 23:10:43,601 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2019-11-23 23:10:43,719 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 306 [2019-11-23 23:10:53,818 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 322 [2019-11-23 23:10:58,990 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2019-11-23 23:10:59,265 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 329 [2019-11-23 23:10:59,457 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2019-11-23 23:10:59,613 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-23 23:11:02,131 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 338 [2019-11-23 23:11:02,250 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 335 [2019-11-23 23:11:04,770 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 341 [2019-11-23 23:11:04,879 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 339 [2019-11-23 23:11:07,580 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 23:11:07,726 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 342 [2019-11-23 23:11:07,951 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 344 [2019-11-23 23:11:08,085 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2019-11-23 23:11:08,195 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 346 [2019-11-23 23:11:08,323 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2019-11-23 23:11:08,432 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 349 [2019-11-23 23:11:11,329 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2019-11-23 23:11:11,449 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 23:11:14,194 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 356