/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_init3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:08:06,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:08:06,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:08:06,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:08:06,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:08:06,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:08:06,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:08:06,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:08:06,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:08:06,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:08:06,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:08:06,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:08:06,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:08:06,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:08:06,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:08:06,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:08:06,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:08:06,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:08:06,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:08:06,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:08:06,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:08:06,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:08:06,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:08:06,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:08:06,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:08:06,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:08:06,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:08:06,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:08:06,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:08:06,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:08:06,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:08:06,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:08:06,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:08:06,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:08:06,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:08:06,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:08:06,164 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 23:08:06,200 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:08:06,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:08:06,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:08:06,201 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:08:06,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:08:06,202 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:08:06,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:08:06,202 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:08:06,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:08:06,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:08:06,203 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:08:06,203 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:08:06,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:08:06,203 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:08:06,204 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:08:06,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:08:06,204 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:08:06,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:08:06,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:08:06,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:08:06,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:08:06,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:08:06,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:08:06,206 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:08:06,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:08:06,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:08:06,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:08:06,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:08:06,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:08:06,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:08:06,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:08:06,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:08:06,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:08:06,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:08:06,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:08:06,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:08:06,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:08:06,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:08:06,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:08:06,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:08:06,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:08:06,509 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:08:06,510 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:08:06,510 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2019-11-23 23:08:06,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32b149f4/3f9a541c32404e3e9ca0f2bb6f1fad20/FLAG029e67b80 [2019-11-23 23:08:07,028 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:08:07,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2019-11-23 23:08:07,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32b149f4/3f9a541c32404e3e9ca0f2bb6f1fad20/FLAG029e67b80 [2019-11-23 23:08:07,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32b149f4/3f9a541c32404e3e9ca0f2bb6f1fad20 [2019-11-23 23:08:07,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:08:07,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:08:07,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:08:07,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:08:07,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:08:07,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fe4cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07, skipping insertion in model container [2019-11-23 23:08:07,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:08:07,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:08:07,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:08:07,716 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:08:07,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:08:07,757 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:08:07,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07 WrapperNode [2019-11-23 23:08:07,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:08:07,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:08:07,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:08:07,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:08:07,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:08:07,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:08:07,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:08:07,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:08:07,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (1/1) ... [2019-11-23 23:08:07,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:08:07,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:08:07,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:08:07,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:08:07,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (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 23:08:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:08:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:08:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:08:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:08:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:08:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:08:08,265 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:08:08,266 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-23 23:08:08,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:08 BoogieIcfgContainer [2019-11-23 23:08:08,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:08:08,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:08:08,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:08:08,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:08:08,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:08:07" (1/3) ... [2019-11-23 23:08:08,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dacaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:08:08, skipping insertion in model container [2019-11-23 23:08:08,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:07" (2/3) ... [2019-11-23 23:08:08,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dacaca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:08:08, skipping insertion in model container [2019-11-23 23:08:08,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:08" (3/3) ... [2019-11-23 23:08:08,276 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-1.i [2019-11-23 23:08:08,288 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:08:08,306 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:08:08,323 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:08:08,370 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:08:08,371 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:08:08,371 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:08:08,371 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:08:08,371 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:08:08,371 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:08:08,371 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:08:08,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:08:08,384 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-23 23:08:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:08:08,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:08:08,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:08:08,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:08:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:08:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash 920734473, now seen corresponding path program 1 times [2019-11-23 23:08:08,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:08:08,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578609857] [2019-11-23 23:08:08,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:08:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:08:08,541 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 23:08:08,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578609857] [2019-11-23 23:08:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:08:08,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:08:08,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747586772] [2019-11-23 23:08:08,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:08:08,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:08:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:08:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:08:08,565 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-23 23:08:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:08:08,637 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-23 23:08:08,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:08:08,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-23 23:08:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:08:08,651 INFO L225 Difference]: With dead ends: 21 [2019-11-23 23:08:08,652 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 23:08:08,655 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 23:08:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 23:08:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 23:08:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 23:08:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-23 23:08:08,700 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-11-23 23:08:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:08:08,700 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-23 23:08:08,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:08:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-11-23 23:08:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 23:08:08,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:08:08,701 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:08:08,702 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:08:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:08:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1092929107, now seen corresponding path program 1 times [2019-11-23 23:08:08,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:08:08,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9962763] [2019-11-23 23:08:08,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:08:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:08:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:08:08,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9962763] [2019-11-23 23:08:08,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227928628] [2019-11-23 23:08:08,781 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 23:08:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:08:08,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:08:08,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:08:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:08:08,862 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:08:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:08:08,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [617261335] [2019-11-23 23:08:08,924 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-23 23:08:08,924 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:08:08,950 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:08:08,957 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:08:08,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:08:37,954 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2019-11-23 23:08:44,323 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 282 [2019-11-23 23:08:44,500 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 279 [2019-11-23 23:08:58,683 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 300 [2019-11-23 23:09:05,610 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 318 [2019-11-23 23:09:08,275 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2019-11-23 23:09:08,420 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 318 [2019-11-23 23:09:18,347 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 336 [2019-11-23 23:09:20,919 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 338 [2019-11-23 23:09:21,051 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-23 23:09:21,163 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 339 [2019-11-23 23:09:21,302 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2019-11-23 23:09:21,421 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 342 [2019-11-23 23:09:21,547 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2019-11-23 23:09:21,661 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 346 [2019-11-23 23:09:24,319 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-23 23:09:24,440 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 350 [2019-11-23 23:09:27,148 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2019-11-23 23:09:27,274 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 23:09:30,030 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 361 [2019-11-23 23:09:30,162 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 356 [2019-11-23 23:09:33,061 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2019-11-23 23:09:33,270 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 360 [2019-11-23 23:09:35,928 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 366 [2019-11-23 23:09:36,060 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 365 [2019-11-23 23:09:38,979 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-11-23 23:09:39,139 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 366 [2019-11-23 23:09:39,265 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-11-23 23:09:39,388 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 366 [2019-11-23 23:09:39,527 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2019-11-23 23:09:39,643 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 370