/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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:30:58,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:30:58,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:30:58,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:30:58,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:30:58,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:30:58,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:30:58,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:30:58,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:30:58,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:30:58,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:30:58,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:30:58,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:30:58,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:30:58,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:30:58,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:30:58,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:30:58,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:30:58,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:30:58,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:30:58,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:30:58,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:30:58,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:30:58,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:30:58,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:30:58,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:30:58,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:30:58,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:30:58,721 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 05:30:58,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:30:58,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:30:58,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:30:58,737 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:30:58,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:30:58,737 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:30:58,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:30:58,738 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:30:58,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:30:58,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:30:58,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:30:58,738 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:30:58,739 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:30:58,739 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:30:58,739 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:30:58,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:30:58,740 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:30:58,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:30:58,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:30:58,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:30:58,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:30:58,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:30:58,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:30:58,741 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:30:58,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:30:58,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:30:58,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:30:58,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:30:58,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:30:58,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:30:58,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:30:58,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:30:58,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:30:58,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:30:58,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:30:58,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:30:58,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:30:58,744 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:30:59,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:30:59,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:30:59,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:30:59,064 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:30:59,065 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:30:59,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-11-24 05:30:59,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc802aabb/429bb779c6264eb0bc53676c0b7d37a3/FLAGe83380e13 [2019-11-24 05:30:59,638 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:30:59,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product57.cil.c [2019-11-24 05:30:59,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc802aabb/429bb779c6264eb0bc53676c0b7d37a3/FLAGe83380e13 [2019-11-24 05:30:59,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc802aabb/429bb779c6264eb0bc53676c0b7d37a3 [2019-11-24 05:30:59,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:30:59,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:30:59,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:30:59,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:30:59,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:30:59,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:30:59" (1/1) ... [2019-11-24 05:30:59,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119c6953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:30:59, skipping insertion in model container [2019-11-24 05:30:59,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:30:59" (1/1) ... [2019-11-24 05:30:59,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:31:00,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:31:00,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:31:00,464 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:31:00,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:31:00,657 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:31:00,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00 WrapperNode [2019-11-24 05:31:00,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:31:00,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:31:00,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:31:00,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:31:00,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:31:00,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:31:00,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:31:00,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:31:00,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (1/1) ... [2019-11-24 05:31:00,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:31:00,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:31:00,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:31:00,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:31:00,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (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 05:31:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:31:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:31:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:31:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:31:03,558 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:31:03,559 INFO L284 CfgBuilder]: Removed 192 assume(true) statements. [2019-11-24 05:31:03,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:31:03 BoogieIcfgContainer [2019-11-24 05:31:03,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:31:03,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:31:03,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:31:03,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:31:03,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:30:59" (1/3) ... [2019-11-24 05:31:03,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5758888c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:31:03, skipping insertion in model container [2019-11-24 05:31:03,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:31:00" (2/3) ... [2019-11-24 05:31:03,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5758888c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:31:03, skipping insertion in model container [2019-11-24 05:31:03,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:31:03" (3/3) ... [2019-11-24 05:31:03,574 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product57.cil.c [2019-11-24 05:31:03,584 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:31:03,593 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:31:03,602 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:31:03,624 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:31:03,624 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:31:03,624 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:31:03,625 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:31:03,625 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:31:03,625 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:31:03,625 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:31:03,625 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:31:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:31:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:31:03,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:31:03,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:31:03,646 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:31:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:31:03,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1508047751, now seen corresponding path program 1 times [2019-11-24 05:31:03,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:31:03,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205668212] [2019-11-24 05:31:03,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:31:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:31:04,120 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 05:31:04,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205668212] [2019-11-24 05:31:04,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:31:04,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:31:04,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196724706] [2019-11-24 05:31:04,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:31:04,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:31:04,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:31:04,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:31:04,146 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2019-11-24 05:31:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:31:04,382 INFO L93 Difference]: Finished difference Result 76 states and 110 transitions. [2019-11-24 05:31:04,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:31:04,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-24 05:31:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:31:04,396 INFO L225 Difference]: With dead ends: 76 [2019-11-24 05:31:04,397 INFO L226 Difference]: Without dead ends: 47 [2019-11-24 05:31:04,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-24 05:31:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-24 05:31:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-24 05:31:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:31:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-24 05:31:04,441 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 7 [2019-11-24 05:31:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:31:04,442 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-24 05:31:04,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:31:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-24 05:31:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:31:04,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:31:04,443 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:31:04,443 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:31:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:31:04,444 INFO L82 PathProgramCache]: Analyzing trace with hash -810291256, now seen corresponding path program 1 times [2019-11-24 05:31:04,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:31:04,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053268242] [2019-11-24 05:31:04,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:31:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:31:04,702 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 05:31:04,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053268242] [2019-11-24 05:31:04,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426037976] [2019-11-24 05:31:04,703 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 05:31:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:31:04,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:31:04,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:31:04,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:04,928 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:04,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:04,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,112 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 05:31:05,112 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:31:05,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:31:05,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:31:05,455 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 05:31:05,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1118881034] [2019-11-24 05:31:05,507 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:31:05,508 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:31:05,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:31:05,524 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:31:05,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:31:14,709 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:31:16,338 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:31:16,498 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:31:17,062 WARN L192 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 598 DAG size of output: 598 [2019-11-24 05:31:18,052 WARN L192 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 698 [2019-11-24 05:31:20,131 WARN L192 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 888 DAG size of output: 850 [2019-11-24 05:31:28,478 WARN L192 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 846 DAG size of output: 842 [2019-11-24 05:32:00,013 WARN L192 SmtUtils]: Spent 21.78 s on a formula simplification. DAG size of input: 2574 DAG size of output: 1699 [2019-11-24 05:32:21,237 WARN L192 SmtUtils]: Spent 21.20 s on a formula simplification. DAG size of input: 2574 DAG size of output: 1699