/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/product-lines/minepump_spec3_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:26:48,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:26:48,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:26:48,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:26:48,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:26:48,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:26:48,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:26:48,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:26:48,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:26:48,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:26:48,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:26:48,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:26:48,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:26:48,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:26:48,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:26:48,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:26:48,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:26:48,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:26:48,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:26:48,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:26:48,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:26:48,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:26:48,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:26:48,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:26:48,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:26:48,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:26:48,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:26:48,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:26:48,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:26:48,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:26:48,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:26:48,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:26:48,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:26:48,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:26:48,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:26:48,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:26:48,262 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 05:26:48,294 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:26:48,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:26:48,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:26:48,297 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:26:48,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:26:48,298 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:26:48,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:26:48,298 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:26:48,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:26:48,298 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:26:48,299 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:26:48,299 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:26:48,299 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:26:48,299 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:26:48,299 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:26:48,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:26:48,301 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:26:48,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:26:48,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:26:48,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:26:48,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:26:48,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:26:48,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:26:48,303 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:26:48,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:26:48,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:26:48,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:26:48,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:26:48,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:26:48,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:26:48,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:26:48,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:26:48,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:26:48,307 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:26:48,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:26:48,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:26:48,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:26:48,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:26:48,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:26:48,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:26:48,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:26:48,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:26:48,608 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:26:48,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product46.cil.c [2019-11-24 05:26:48,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14e8833f/784c0073a1084832af10d2eae7c3e5e9/FLAG5b0aed80b [2019-11-24 05:26:49,195 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:26:49,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product46.cil.c [2019-11-24 05:26:49,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14e8833f/784c0073a1084832af10d2eae7c3e5e9/FLAG5b0aed80b [2019-11-24 05:26:49,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14e8833f/784c0073a1084832af10d2eae7c3e5e9 [2019-11-24 05:26:49,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:26:49,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:26:49,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:26:49,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:26:49,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:26:49,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:26:49" (1/1) ... [2019-11-24 05:26:49,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ddc826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:49, skipping insertion in model container [2019-11-24 05:26:49,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:26:49" (1/1) ... [2019-11-24 05:26:49,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:26:49,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:26:49,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:26:49,977 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:26:50,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:26:50,139 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:26:50,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50 WrapperNode [2019-11-24 05:26:50,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:26:50,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:26:50,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:26:50,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:26:50,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:26:50,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:26:50,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:26:50,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:26:50,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (1/1) ... [2019-11-24 05:26:50,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:26:50,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:26:50,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:26:50,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:26:50,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (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 05:26:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:26:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:26:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:26:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:26:52,748 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:26:52,748 INFO L284 CfgBuilder]: Removed 200 assume(true) statements. [2019-11-24 05:26:52,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:52 BoogieIcfgContainer [2019-11-24 05:26:52,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:26:52,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:26:52,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:26:52,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:26:52,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:26:49" (1/3) ... [2019-11-24 05:26:52,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bf8651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:52, skipping insertion in model container [2019-11-24 05:26:52,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:50" (2/3) ... [2019-11-24 05:26:52,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9bf8651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:52, skipping insertion in model container [2019-11-24 05:26:52,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:52" (3/3) ... [2019-11-24 05:26:52,758 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product46.cil.c [2019-11-24 05:26:52,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:26:52,776 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:26:52,790 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:26:52,821 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:26:52,821 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:26:52,822 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:26:52,822 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:26:52,822 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:26:52,822 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:26:52,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:26:52,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:26:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:26:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:26:52,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:52,849 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:52,850 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1833835370, now seen corresponding path program 1 times [2019-11-24 05:26:52,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:52,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684796111] [2019-11-24 05:26:52,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:53,437 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 05:26:53,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684796111] [2019-11-24 05:26:53,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:26:53,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:26:53,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125148760] [2019-11-24 05:26:53,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:26:53,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:26:53,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:26:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:26:53,463 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:26:53,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:26:53,831 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2019-11-24 05:26:53,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:26:53,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:26:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:26:53,844 INFO L225 Difference]: With dead ends: 95 [2019-11-24 05:26:53,844 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:26:53,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:26:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:26:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2019-11-24 05:26:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:26:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:26:53,889 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:26:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:26:53,889 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:26:53,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:26:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:26:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:26:53,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:53,891 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:53,891 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:53,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1921728801, now seen corresponding path program 1 times [2019-11-24 05:26:53,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:53,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729471979] [2019-11-24 05:26:53,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:26:54,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729471979] [2019-11-24 05:26:54,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882000148] [2019-11-24 05:26:54,220 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 [2019-11-24 05:26:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:54,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-24 05:26:54,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:26:54,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,501 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:54,642 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:26:54,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:26:54,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796063073] [2019-11-24 05:26:54,838 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:26:54,838 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:26:54,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:26:54,858 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:26:54,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:27:02,569 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:27:04,149 WARN L192 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:27:04,343 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:27:05,030 WARN L192 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 595 DAG size of output: 595 [2019-11-24 05:27:05,848 WARN L192 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 696 [2019-11-24 05:27:07,984 WARN L192 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 809 DAG size of output: 761 [2019-11-24 05:27:10,993 WARN L192 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 760 DAG size of output: 759 [2019-11-24 05:27:24,664 WARN L192 SmtUtils]: Spent 7.51 s on a formula simplification. DAG size of input: 1529 DAG size of output: 1196 [2019-11-24 05:27:32,861 WARN L192 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 1529 DAG size of output: 1196 [2019-11-24 05:27:41,736 WARN L192 SmtUtils]: Spent 8.86 s on a formula simplification. DAG size of input: 1155 DAG size of output: 1140 [2019-11-24 05:27:41,745 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:27:46,248 WARN L192 SmtUtils]: Spent 4.33 s on a formula simplification. DAG size of input: 484 DAG size of output: 429