/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_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:22:30,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:22:30,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:22:30,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:22:30,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:22:30,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:22:30,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:22:30,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:22:30,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:22:30,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:22:30,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:22:30,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-24 05:22:30,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:22:30,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:22:30,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:22:30,613 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 05:22:30,648 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:22:30,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:22:30,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:22:30,649 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:22:30,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:22:30,650 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:22:30,650 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:22:30,650 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:22:30,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:22:30,650 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:22:30,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:22:30,653 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:22:30,653 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:22:30,653 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:22:30,654 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:22:30,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:22:30,655 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:22:30,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:22:30,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:22:30,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:22:30,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:22:30,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:22:30,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:22:30,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:22:30,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:22:30,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:22:30,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:22:30,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:22:30,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:22:30,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:22:30,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:22:30,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:22:30,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:22:30,658 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:22:30,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:22:30,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:22:30,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:22:30,659 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:22:30,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:22:30,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:22:30,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:22:30,953 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:22:30,953 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:22:30,954 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-11-24 05:22:31,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca519e46/bff2099659044c50adfd74dd8adaa34a/FLAG155be3759 [2019-11-24 05:22:31,469 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:22:31,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-11-24 05:22:31,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca519e46/bff2099659044c50adfd74dd8adaa34a/FLAG155be3759 [2019-11-24 05:22:31,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca519e46/bff2099659044c50adfd74dd8adaa34a [2019-11-24 05:22:31,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:22:31,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:22:31,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:22:31,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:22:31,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:22:31,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:22:31" (1/1) ... [2019-11-24 05:22:31,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ab2c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:31, skipping insertion in model container [2019-11-24 05:22:31,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:22:31" (1/1) ... [2019-11-24 05:22:31,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:22:31,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:22:32,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:22:32,418 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:22:32,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:22:32,534 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:22:32,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32 WrapperNode [2019-11-24 05:22:32,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:22:32,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:22:32,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:22:32,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:22:32,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:22:32,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:22:32,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:22:32,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:22:32,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (1/1) ... [2019-11-24 05:22:32,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:22:32,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:22:32,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:22:32,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:22:32,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (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 05:22:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:22:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:22:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:22:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:22:34,779 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:22:34,779 INFO L284 CfgBuilder]: Removed 158 assume(true) statements. [2019-11-24 05:22:34,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:22:34 BoogieIcfgContainer [2019-11-24 05:22:34,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:22:34,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:22:34,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:22:34,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:22:34,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:22:31" (1/3) ... [2019-11-24 05:22:34,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483ce805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:22:34, skipping insertion in model container [2019-11-24 05:22:34,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:32" (2/3) ... [2019-11-24 05:22:34,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483ce805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:22:34, skipping insertion in model container [2019-11-24 05:22:34,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:22:34" (3/3) ... [2019-11-24 05:22:34,789 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2019-11-24 05:22:34,799 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:22:34,806 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:22:34,818 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:22:34,844 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:22:34,844 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:22:34,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:22:34,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:22:34,845 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:22:34,845 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:22:34,845 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:22:34,845 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:22:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:22:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:22:34,864 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:34,865 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:22:34,865 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:34,870 INFO L82 PathProgramCache]: Analyzing trace with hash 174259421, now seen corresponding path program 1 times [2019-11-24 05:22:34,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:34,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896208839] [2019-11-24 05:22:34,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:35,185 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 05:22:35,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896208839] [2019-11-24 05:22:35,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:22:35,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:22:35,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429748047] [2019-11-24 05:22:35,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:22:35,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:22:35,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:22:35,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:22:35,206 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:22:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:22:35,226 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:22:35,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:22:35,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:22:35,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:22:35,238 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:22:35,238 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:22:35,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:22:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:22:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:22:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:22:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:22:35,279 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:22:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:22:35,279 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:22:35,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:22:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:22:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:22:35,280 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:35,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:22:35,281 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:35,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:35,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1891919755, now seen corresponding path program 1 times [2019-11-24 05:22:35,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:35,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866376500] [2019-11-24 05:22:35,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:35,451 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 05:22:35,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866376500] [2019-11-24 05:22:35,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:22:35,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:22:35,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277972975] [2019-11-24 05:22:35,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:22:35,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:22:35,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:22:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:22:35,455 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 3 states. [2019-11-24 05:22:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:22:35,541 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2019-11-24 05:22:35,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:22:35,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:22:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:22:35,543 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:22:35,543 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:22:35,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:22:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:22:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:22:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:22:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:22:35,560 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:22:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:22:35,560 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:22:35,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:22:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:22:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:22:35,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:35,562 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:22:35,562 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash 610076304, now seen corresponding path program 1 times [2019-11-24 05:22:35,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:35,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120070202] [2019-11-24 05:22:35,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:22:35,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120070202] [2019-11-24 05:22:35,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572365077] [2019-11-24 05:22:35,968 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 05:22:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:36,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-24 05:22:36,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:22:36,358 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-11-24 05:22:36,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:22:36,598 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:22:36,615 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:36,967 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 25 [2019-11-24 05:22:37,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-24 05:22:37,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:22:37,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1239213262] [2019-11-24 05:22:37,172 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:22:37,172 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:22:37,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:22:37,185 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:22:37,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:22:45,809 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:22:47,498 WARN L192 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:22:47,640 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:22:48,650 WARN L192 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 727 DAG size of output: 672 [2019-11-24 05:22:51,559 WARN L192 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 791 DAG size of output: 790 [2019-11-24 05:22:52,663 WARN L192 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:22:53,248 WARN L192 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:22:53,677 WARN L192 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:22:54,031 WARN L192 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:22:54,447 WARN L192 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:22:54,780 WARN L192 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:22:54,782 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:22:59,525 WARN L192 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:23:15,887 WARN L192 SmtUtils]: Spent 16.07 s on a formula simplification. DAG size of input: 713 DAG size of output: 517 [2019-11-24 05:23:39,399 WARN L192 SmtUtils]: Spent 23.11 s on a formula simplification. DAG size of input: 790 DAG size of output: 541 [2019-11-24 05:24:01,300 WARN L192 SmtUtils]: Spent 21.38 s on a formula simplification. DAG size of input: 775 DAG size of output: 531