/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_spec5_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:39:16,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:39:16,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:39:16,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:39:16,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:39:16,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:39:16,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:39:16,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:39:16,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:39:16,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:39:16,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:39:16,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:39:16,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:39:16,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:39:16,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:39:16,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:39:16,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:39:16,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:39:16,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:39:16,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:39:16,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:39:16,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:39:16,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:39:16,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:39:16,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:39:16,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:39:16,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:39:16,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:39:16,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:39:16,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:39:16,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:39:16,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:39:16,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:39:16,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:39:16,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:39:16,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:39:16,620 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 05:39:16,639 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:39:16,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:39:16,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:39:16,640 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:39:16,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:39:16,640 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:39:16,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:39:16,641 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:39:16,641 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:39:16,641 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:39:16,642 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:39:16,643 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:39:16,643 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:39:16,643 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:39:16,643 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:39:16,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:39:16,644 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:39:16,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:39:16,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:39:16,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:39:16,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:39:16,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:39:16,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:39:16,647 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:39:16,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:39:16,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:39:16,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:39:16,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:39:16,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:39:16,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:39:16,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:39:16,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:39:16,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:39:16,649 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:39:16,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:39:16,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:39:16,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:39:16,650 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:39:16,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:39:16,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:39:16,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:39:16,929 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:39:16,932 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:39:16,932 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-11-24 05:39:17,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69efa2e/d48597c19f754c03baedb4990e03781c/FLAG5ef463c83 [2019-11-24 05:39:17,566 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:39:17,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-11-24 05:39:17,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69efa2e/d48597c19f754c03baedb4990e03781c/FLAG5ef463c83 [2019-11-24 05:39:17,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69efa2e/d48597c19f754c03baedb4990e03781c [2019-11-24 05:39:17,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:39:17,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:39:17,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:39:17,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:39:17,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:39:17,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:39:17" (1/1) ... [2019-11-24 05:39:17,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc000cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:17, skipping insertion in model container [2019-11-24 05:39:17,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:39:17" (1/1) ... [2019-11-24 05:39:17,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:39:17,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:39:18,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:39:18,367 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:39:18,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:39:18,497 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:39:18,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18 WrapperNode [2019-11-24 05:39:18,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:39:18,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:39:18,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:39:18,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:39:18,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:39:18,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:39:18,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:39:18,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:39:18,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (1/1) ... [2019-11-24 05:39:18,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:39:18,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:39:18,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:39:18,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:39:18,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (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 05:39:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:39:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:39:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:39:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:39:27,669 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:39:27,669 INFO L284 CfgBuilder]: Removed 914 assume(true) statements. [2019-11-24 05:39:27,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:39:27 BoogieIcfgContainer [2019-11-24 05:39:27,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:39:27,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:39:27,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:39:27,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:39:27,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:39:17" (1/3) ... [2019-11-24 05:39:27,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153c51ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:39:27, skipping insertion in model container [2019-11-24 05:39:27,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:18" (2/3) ... [2019-11-24 05:39:27,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153c51ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:39:27, skipping insertion in model container [2019-11-24 05:39:27,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:39:27" (3/3) ... [2019-11-24 05:39:27,679 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2019-11-24 05:39:27,689 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:39:27,697 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:39:27,709 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:39:27,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:39:27,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:39:27,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:39:27,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:39:27,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:39:27,735 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:39:27,735 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:39:27,735 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:39:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:39:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:39:27,756 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:27,757 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:27,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1004258136, now seen corresponding path program 1 times [2019-11-24 05:39:27,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:27,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100831453] [2019-11-24 05:39:27,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:28,389 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 05:39:28,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100831453] [2019-11-24 05:39:28,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:28,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:39:28,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830402061] [2019-11-24 05:39:28,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:39:28,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:28,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:39:28,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:39:28,416 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:39:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:28,678 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2019-11-24 05:39:28,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:39:28,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:39:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:28,691 INFO L225 Difference]: With dead ends: 92 [2019-11-24 05:39:28,691 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:39:28,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:39:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:39:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:39:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:39:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:39:28,734 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:39:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:28,734 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:39:28,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:39:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:39:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:39:28,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:28,736 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:28,736 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:28,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:28,737 INFO L82 PathProgramCache]: Analyzing trace with hash 105304540, now seen corresponding path program 1 times [2019-11-24 05:39:28,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:28,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874526095] [2019-11-24 05:39:28,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:29,108 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 05:39:29,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874526095] [2019-11-24 05:39:29,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666061316] [2019-11-24 05:39:29,109 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 05:39:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:29,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:39:29,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:39:29,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:29,477 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:39:29,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:39:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:29,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712045251] [2019-11-24 05:39:29,603 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:39:29,604 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:39:29,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:39:29,618 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:39:29,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:39:39,447 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 515 [2019-11-24 05:39:41,004 WARN L192 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:39:41,166 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 523 [2019-11-24 05:39:42,322 WARN L192 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 817 DAG size of output: 699 [2019-11-24 05:40:08,619 WARN L192 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 807 DAG size of output: 807