/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:20:41,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:20:41,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:20:41,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:20:41,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:20:41,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:20:41,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:20:41,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:20:41,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:20:41,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:20:41,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:20:41,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:20:41,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:20:41,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:20:41,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:20:41,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:20:41,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:20:41,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:20:41,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:20:41,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:20:41,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:20:41,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:20:41,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:20:41,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:20:41,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:20:41,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:20:41,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:20:41,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:20:41,895 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 05:20:41,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:20:41,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:20:41,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:20:41,911 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:20:41,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:20:41,911 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:20:41,911 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:20:41,912 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:20:41,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:20:41,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:20:41,912 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:20:41,912 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:20:41,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:20:41,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:20:41,913 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:20:41,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:20:41,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:20:41,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:20:41,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:20:41,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:20:41,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:20:41,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:20:41,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:20:41,915 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:20:41,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:20:41,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:20:41,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:20:41,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:20:41,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:20:41,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:20:41,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:20:41,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:20:41,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:20:41,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:20:41,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:20:41,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:20:41,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:20:41,918 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:20:42,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:20:42,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:20:42,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:20:42,202 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:20:42,202 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:20:42,203 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product28.cil.c [2019-11-24 05:20:42,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6df34a55/53d3f65d507c4b27a3e85d260495618a/FLAG4166ca95b [2019-11-24 05:20:42,763 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:20:42,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product28.cil.c [2019-11-24 05:20:42,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6df34a55/53d3f65d507c4b27a3e85d260495618a/FLAG4166ca95b [2019-11-24 05:20:43,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6df34a55/53d3f65d507c4b27a3e85d260495618a [2019-11-24 05:20:43,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:20:43,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:20:43,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:20:43,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:20:43,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:20:43,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a08c9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43, skipping insertion in model container [2019-11-24 05:20:43,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:20:43,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:20:43,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:20:43,642 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:20:43,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:20:43,759 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:20:43,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43 WrapperNode [2019-11-24 05:20:43,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:20:43,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:20:43,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:20:43,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:20:43,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:20:43,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:20:43,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:20:43,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:20:43,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (1/1) ... [2019-11-24 05:20:43,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:20:43,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:20:43,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:20:43,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:20:43,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (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 05:20:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:20:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:20:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:20:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:20:45,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:20:45,361 INFO L284 CfgBuilder]: Removed 104 assume(true) statements. [2019-11-24 05:20:45,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:20:45 BoogieIcfgContainer [2019-11-24 05:20:45,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:20:45,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:20:45,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:20:45,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:20:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:20:43" (1/3) ... [2019-11-24 05:20:45,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff1681a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:20:45, skipping insertion in model container [2019-11-24 05:20:45,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:43" (2/3) ... [2019-11-24 05:20:45,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff1681a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:20:45, skipping insertion in model container [2019-11-24 05:20:45,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:20:45" (3/3) ... [2019-11-24 05:20:45,371 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product28.cil.c [2019-11-24 05:20:45,380 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:20:45,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:20:45,398 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:20:45,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:20:45,423 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:20:45,423 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:20:45,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:20:45,424 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:20:45,424 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:20:45,425 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:20:45,425 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:20:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:20:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:20:45,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:45,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:20:45,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -814704060, now seen corresponding path program 1 times [2019-11-24 05:20:45,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:45,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345204841] [2019-11-24 05:20:45,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:45,691 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 05:20:45,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345204841] [2019-11-24 05:20:45,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:20:45,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:20:45,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177941124] [2019-11-24 05:20:45,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:20:45,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:20:45,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:20:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:20:45,715 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:20:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:20:45,733 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:20:45,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:20:45,734 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:20:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:20:45,744 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:20:45,744 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:20:45,747 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 05:20:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:20:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:20:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:20:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:20:45,783 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:20:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:20:45,784 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:20:45,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:20:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:20:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:20:45,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:45,785 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:20:45,786 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2042558154, now seen corresponding path program 1 times [2019-11-24 05:20:45,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:45,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832886363] [2019-11-24 05:20:45,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:45,950 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 05:20:45,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832886363] [2019-11-24 05:20:45,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:20:45,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:20:45,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478659389] [2019-11-24 05:20:45,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:20:45,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:20:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:20:45,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:20:45,953 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 3 states. [2019-11-24 05:20:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:20:46,022 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2019-11-24 05:20:46,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:20:46,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:20:46,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:20:46,025 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:20:46,026 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:20:46,027 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 05:20:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:20:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:20:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:20:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:20:46,038 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:20:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:20:46,041 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:20:46,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:20:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:20:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:20:46,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:46,042 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:20:46,043 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:46,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1750028044, now seen corresponding path program 1 times [2019-11-24 05:20:46,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:46,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459053027] [2019-11-24 05:20:46,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 05:20:46,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459053027] [2019-11-24 05:20:46,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46832123] [2019-11-24 05:20:46,345 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 05:20:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:46,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-24 05:20:46,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:20:46,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:20:46,715 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:20:46,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:20:46,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 05:20:46,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 6] total 10 [2019-11-24 05:20:46,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045345071] [2019-11-24 05:20:46,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:20:46,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:20:46,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:20:46,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-24 05:20:46,815 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 5 states. [2019-11-24 05:20:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:20:47,000 INFO L93 Difference]: Finished difference Result 113 states and 154 transitions. [2019-11-24 05:20:47,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:20:47,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:20:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:20:47,001 INFO L225 Difference]: With dead ends: 113 [2019-11-24 05:20:47,001 INFO L226 Difference]: Without dead ends: 48 [2019-11-24 05:20:47,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-11-24 05:20:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-24 05:20:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2019-11-24 05:20:47,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-24 05:20:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2019-11-24 05:20:47,010 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 13 [2019-11-24 05:20:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:20:47,011 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2019-11-24 05:20:47,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:20:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2019-11-24 05:20:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:20:47,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:47,012 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:20:47,222 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:20:47,222 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:47,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1233450756, now seen corresponding path program 1 times [2019-11-24 05:20:47,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:47,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105941400] [2019-11-24 05:20:47,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:20:47,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105941400] [2019-11-24 05:20:47,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93663397] [2019-11-24 05:20:47,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:20:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:47,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-24 05:20:47,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:20:47,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,770 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:20:47,792 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:20:47,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,825 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,850 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 05:20:47,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 05:20:47,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2019-11-24 05:20:47,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308619649] [2019-11-24 05:20:47,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:20:47,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:20:47,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:20:47,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:20:47,856 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand 4 states. [2019-11-24 05:20:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:20:47,919 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2019-11-24 05:20:47,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:20:47,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-24 05:20:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:20:47,921 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:20:47,922 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 05:20:47,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-24 05:20:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 05:20:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 05:20:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 05:20:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 05:20:47,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-24 05:20:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:20:47,925 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 05:20:47,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:20:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 05:20:47,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 05:20:48,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:20:48,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 05:20:48,268 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2019-11-24 05:20:48,268 INFO L447 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-24 05:20:48,268 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 05:20:48,269 INFO L440 ceAbstractionStarter]: At program point L471(lines 471 488) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,269 INFO L440 ceAbstractionStarter]: At program point L471-1(lines 1 954) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,269 INFO L440 ceAbstractionStarter]: At program point L504-2(lines 504 518) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,269 INFO L440 ceAbstractionStarter]: At program point L471-2(lines 471 488) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,269 INFO L440 ceAbstractionStarter]: At program point L471-3(lines 1 954) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,269 INFO L440 ceAbstractionStarter]: At program point L471-4(lines 471 488) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,270 INFO L440 ceAbstractionStarter]: At program point L471-5(lines 1 954) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,270 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2019-11-24 05:20:48,270 INFO L440 ceAbstractionStarter]: At program point L508(lines 508 512) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,270 INFO L444 ceAbstractionStarter]: For program point L475(lines 475 485) no Hoare annotation was computed. [2019-11-24 05:20:48,270 INFO L444 ceAbstractionStarter]: For program point L475-2(lines 475 485) no Hoare annotation was computed. [2019-11-24 05:20:48,270 INFO L444 ceAbstractionStarter]: For program point L475-4(lines 475 485) no Hoare annotation was computed. [2019-11-24 05:20:48,271 INFO L444 ceAbstractionStarter]: For program point L476(lines 476 482) no Hoare annotation was computed. [2019-11-24 05:20:48,271 INFO L444 ceAbstractionStarter]: For program point L476-2(lines 476 482) no Hoare annotation was computed. [2019-11-24 05:20:48,271 INFO L444 ceAbstractionStarter]: For program point L476-4(lines 476 482) no Hoare annotation was computed. [2019-11-24 05:20:48,271 INFO L440 ceAbstractionStarter]: At program point L576(lines 576 583) the Hoare annotation is: (and (= 1 ~systemActive~0) (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,271 INFO L447 ceAbstractionStarter]: At program point L576-1(lines 576 583) the Hoare annotation is: true [2019-11-24 05:20:48,271 INFO L440 ceAbstractionStarter]: At program point L445(lines 394 446) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,271 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2019-11-24 05:20:48,272 INFO L444 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2019-11-24 05:20:48,272 INFO L444 ceAbstractionStarter]: For program point L82-1(line 82) no Hoare annotation was computed. [2019-11-24 05:20:48,272 INFO L444 ceAbstractionStarter]: For program point L82-2(line 82) no Hoare annotation was computed. [2019-11-24 05:20:48,272 INFO L440 ceAbstractionStarter]: At program point L396(lines 395 444) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ~methAndRunningLastTime~0)) [2019-11-24 05:20:48,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 05:20:48 BoogieIcfgContainer [2019-11-24 05:20:48,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 05:20:48,289 INFO L168 Benchmark]: Toolchain (without parser) took 5176.69 ms. Allocated memory was 137.4 MB in the beginning and 250.1 MB in the end (delta: 112.7 MB). Free memory was 101.1 MB in the beginning and 140.2 MB in the end (delta: -39.1 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,290 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.03 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 170.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.15 ms. Allocated memory is still 201.3 MB. Free memory was 170.1 MB in the beginning and 167.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,293 INFO L168 Benchmark]: Boogie Preprocessor took 37.71 ms. Allocated memory is still 201.3 MB. Free memory was 167.3 MB in the beginning and 164.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,294 INFO L168 Benchmark]: RCFGBuilder took 1488.29 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 164.4 MB in the beginning and 156.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,295 INFO L168 Benchmark]: TraceAbstraction took 2923.12 ms. Allocated memory was 232.8 MB in the beginning and 250.1 MB in the end (delta: 17.3 MB). Free memory was 156.2 MB in the beginning and 140.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2019-11-24 05:20:48,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.03 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 170.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.15 ms. Allocated memory is still 201.3 MB. Free memory was 170.1 MB in the beginning and 167.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.71 ms. Allocated memory is still 201.3 MB. Free memory was 167.3 MB in the beginning and 164.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1488.29 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 164.4 MB in the beginning and 156.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2923.12 ms. Allocated memory was 232.8 MB in the beginning and 250.1 MB in the end (delta: 17.3 MB). Free memory was 156.2 MB in the beginning and 140.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 471]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 395]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 504]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: (1 == systemActive && pumpRunning == 0) && 0 == methAndRunningLastTime - InvariantResult [Line: 471]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 471]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - InvariantResult [Line: 508]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == methAndRunningLastTime - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 3 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 104 SDtfs, 79 SDslu, 71 SDs, 0 SdLazy, 64 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 61 NumberOfFragments, 82 HoareAnnotationTreeSize, 13 FomulaSimplifications, 929 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 5694 SizeOfPredicates, 60 NumberOfNonLiveVariables, 739 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 31/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...