/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_spec4_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:29:32,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:29:32,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:29:32,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:29:32,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:29:32,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:29:32,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:29:32,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:29:32,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:29:32,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:29:32,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:29:32,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:29:32,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:29:32,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:29:32,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:29:32,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:29:32,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:29:32,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:29:32,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:29:32,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:29:32,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:29:32,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:29:32,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:29:32,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:29:32,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:29:32,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:29:32,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:29:32,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:29:32,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:29:32,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:29:32,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:29:32,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:29:32,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:29:32,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:29:32,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:29:32,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:29:32,227 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 05:29:32,250 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:29:32,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:29:32,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:29:32,251 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:29:32,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:29:32,252 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:29:32,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:29:32,252 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:29:32,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:29:32,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:29:32,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:29:32,253 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:29:32,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:29:32,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:29:32,254 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:29:32,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:29:32,255 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:29:32,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:29:32,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:29:32,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:29:32,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:29:32,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:29:32,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:29:32,257 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:29:32,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:29:32,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:29:32,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:29:32,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:29:32,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:29:32,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:29:32,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:29:32,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:29:32,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:29:32,259 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:29:32,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:29:32,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:29:32,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:29:32,261 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:29:32,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:29:32,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:29:32,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:29:32,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:29:32,558 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:29:32,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-11-24 05:29:32,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae65027e8/e925dc38b9264c8d8965edd68943a803/FLAG8b87fe470 [2019-11-24 05:29:33,177 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:29:33,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product54.cil.c [2019-11-24 05:29:33,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae65027e8/e925dc38b9264c8d8965edd68943a803/FLAG8b87fe470 [2019-11-24 05:29:33,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae65027e8/e925dc38b9264c8d8965edd68943a803 [2019-11-24 05:29:33,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:29:33,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:29:33,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:29:33,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:29:33,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:29:33,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:29:33" (1/1) ... [2019-11-24 05:29:33,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7ef353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:33, skipping insertion in model container [2019-11-24 05:29:33,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:29:33" (1/1) ... [2019-11-24 05:29:33,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:29:33,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:29:34,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:29:34,111 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:29:34,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:29:34,241 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:29:34,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34 WrapperNode [2019-11-24 05:29:34,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:29:34,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:29:34,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:29:34,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:29:34,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:29:34,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:29:34,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:29:34,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:29:34,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... [2019-11-24 05:29:34,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:29:34,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:29:34,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:29:34,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:29:34,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:29:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:29:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:29:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:29:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:29:38,067 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:29:38,067 INFO L284 CfgBuilder]: Removed 278 assume(true) statements. [2019-11-24 05:29:38,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:29:38 BoogieIcfgContainer [2019-11-24 05:29:38,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:29:38,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:29:38,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:29:38,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:29:38,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:29:33" (1/3) ... [2019-11-24 05:29:38,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e489e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:29:38, skipping insertion in model container [2019-11-24 05:29:38,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:34" (2/3) ... [2019-11-24 05:29:38,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e489e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:29:38, skipping insertion in model container [2019-11-24 05:29:38,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:29:38" (3/3) ... [2019-11-24 05:29:38,080 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product54.cil.c [2019-11-24 05:29:38,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:29:38,098 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:29:38,110 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:29:38,137 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:29:38,138 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:29:38,138 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:29:38,138 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:29:38,138 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:29:38,139 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:29:38,139 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:29:38,139 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:29:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:29:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:29:38,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:29:38,165 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:29:38,166 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:29:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:29:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash 798327413, now seen corresponding path program 1 times [2019-11-24 05:29:38,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:29:38,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670936862] [2019-11-24 05:29:38,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:29:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:29:38,677 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 05:29:38,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670936862] [2019-11-24 05:29:38,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:29:38,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:29:38,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099309729] [2019-11-24 05:29:38,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:29:38,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:29:38,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:29:38,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:29:38,703 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-11-24 05:29:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:29:38,828 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2019-11-24 05:29:38,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:29:38,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 05:29:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:29:38,845 INFO L225 Difference]: With dead ends: 61 [2019-11-24 05:29:38,845 INFO L226 Difference]: Without dead ends: 27 [2019-11-24 05:29:38,854 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:29:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-24 05:29:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-24 05:29:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:29:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-24 05:29:38,912 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-11-24 05:29:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:29:38,912 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-24 05:29:38,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:29:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-24 05:29:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:29:38,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:29:38,914 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:29:38,914 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:29:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:29:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -722692754, now seen corresponding path program 1 times [2019-11-24 05:29:38,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:29:38,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780778908] [2019-11-24 05:29:38,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:29:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:29:39,325 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 05:29:39,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780778908] [2019-11-24 05:29:39,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613085722] [2019-11-24 05:29:39,325 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 05:29:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:29:39,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-24 05:29:39,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:29:39,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,765 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 05:29:39,765 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:29:39,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:29:39,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:39,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:40,262 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2019-11-24 05:29:40,264 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 05:29:40,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486365045] [2019-11-24 05:29:40,289 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:29:40,289 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:29:40,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:29:40,301 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:29:40,302 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:29:49,250 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:29:51,015 WARN L192 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:29:51,176 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:29:51,719 WARN L192 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 578 [2019-11-24 05:29:52,689 WARN L192 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 678 [2019-11-24 05:29:55,037 WARN L192 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 870 DAG size of output: 845 [2019-11-24 05:30:00,600 WARN L192 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 845 DAG size of output: 838 [2019-11-24 05:30:15,347 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:30:20,129 WARN L192 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-24 05:30:52,810 WARN L192 SmtUtils]: Spent 32.23 s on a formula simplification. DAG size of input: 834 DAG size of output: 585