/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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:23:36,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:23:36,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:23:36,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:23:36,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:23:36,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:23:36,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:23:36,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:23:36,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:23:36,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:23:36,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:23:36,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:23:36,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:23:36,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:23:36,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:23:36,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:23:36,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:23:36,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:23:36,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:23:36,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:23:36,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:23:36,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:23:36,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:23:36,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:23:36,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:23:36,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:23:36,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:23:36,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:23:36,670 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 05:23:36,693 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:23:36,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:23:36,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:23:36,694 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:23:36,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:23:36,695 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:23:36,695 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:23:36,695 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:23:36,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:23:36,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:23:36,697 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:23:36,697 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:23:36,697 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:23:36,697 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:23:36,698 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:23:36,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:23:36,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:23:36,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:23:36,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:23:36,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:23:36,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:23:36,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:23:36,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:23:36,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:23:36,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:23:36,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:23:36,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:23:36,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:23:36,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:23:36,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:23:36,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:23:36,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:23:36,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:23:36,703 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:23:36,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:23:36,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:23:36,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:23:36,704 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:23:36,991 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:23:37,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:23:37,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:23:37,011 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:23:37,012 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:23:37,012 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2019-11-24 05:23:37,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b1f77ab7/cb58018964bc4325a8fd51f4a1eea431/FLAGd4acb19d3 [2019-11-24 05:23:37,606 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:23:37,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2019-11-24 05:23:37,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b1f77ab7/cb58018964bc4325a8fd51f4a1eea431/FLAGd4acb19d3 [2019-11-24 05:23:37,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b1f77ab7/cb58018964bc4325a8fd51f4a1eea431 [2019-11-24 05:23:37,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:23:37,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:23:37,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:23:37,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:23:37,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:23:37,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:23:37" (1/1) ... [2019-11-24 05:23:37,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474dcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:37, skipping insertion in model container [2019-11-24 05:23:37,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:23:37" (1/1) ... [2019-11-24 05:23:37,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:23:38,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:23:38,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:23:38,499 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:23:38,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:23:38,636 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:23:38,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38 WrapperNode [2019-11-24 05:23:38,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:23:38,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:23:38,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:23:38,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:23:38,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:23:38,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:23:38,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:23:38,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:23:38,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (1/1) ... [2019-11-24 05:23:38,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:23:38,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:23:38,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:23:38,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:23:38,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (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 05:23:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:23:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:23:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:23:38,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:23:42,234 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:23:42,234 INFO L284 CfgBuilder]: Removed 284 assume(true) statements. [2019-11-24 05:23:42,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:23:42 BoogieIcfgContainer [2019-11-24 05:23:42,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:23:42,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:23:42,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:23:42,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:23:42,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:23:37" (1/3) ... [2019-11-24 05:23:42,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2133d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:23:42, skipping insertion in model container [2019-11-24 05:23:42,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:23:38" (2/3) ... [2019-11-24 05:23:42,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2133d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:23:42, skipping insertion in model container [2019-11-24 05:23:42,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:23:42" (3/3) ... [2019-11-24 05:23:42,244 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2019-11-24 05:23:42,254 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:23:42,261 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:23:42,272 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:23:42,300 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:23:42,300 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:23:42,300 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:23:42,300 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:23:42,301 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:23:42,301 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:23:42,301 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:23:42,301 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:23:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:23:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:23:42,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:23:42,323 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:23:42,324 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:23:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:23:42,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1299915309, now seen corresponding path program 1 times [2019-11-24 05:23:42,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:23:42,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345238449] [2019-11-24 05:23:42,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:23:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:23:42,644 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 05:23:42,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345238449] [2019-11-24 05:23:42,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:23:42,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:23:42,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918553668] [2019-11-24 05:23:42,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:23:42,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:23:42,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:23:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:23:42,662 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:23:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:23:42,683 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:23:42,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:23:42,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:23:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:23:42,695 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:23:42,695 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:23:42,699 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 05:23:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:23:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:23:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:23:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:23:42,728 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:23:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:23:42,729 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:23:42,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:23:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:23:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:23:42,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:23:42,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:23:42,762 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:23:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:23:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash -662224143, now seen corresponding path program 1 times [2019-11-24 05:23:42,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:23:42,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811266727] [2019-11-24 05:23:42,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:23:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:23:42,940 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 05:23:42,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811266727] [2019-11-24 05:23:42,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:23:42,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:23:42,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660362442] [2019-11-24 05:23:42,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:23:42,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:23:42,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:23:42,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:23:42,945 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 3 states. [2019-11-24 05:23:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:23:43,036 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2019-11-24 05:23:43,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:23:43,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:23:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:23:43,038 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:23:43,038 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:23:43,040 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 05:23:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:23:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:23:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:23:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:23:43,054 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:23:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:23:43,055 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:23:43,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:23:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:23:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:23:43,056 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:23:43,056 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:23:43,057 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:23:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:23:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash 755895736, now seen corresponding path program 1 times [2019-11-24 05:23:43,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:23:43,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335772286] [2019-11-24 05:23:43,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:23:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:23:43,352 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 05:23:43,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335772286] [2019-11-24 05:23:43,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167983248] [2019-11-24 05:23:43,353 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 05:23:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:23:43,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-24 05:23:43,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:23:43,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:43,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:43,887 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-11-24 05:23:44,116 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-11-24 05:23:44,327 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2019-11-24 05:23:44,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,418 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:23:44,558 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:23:44,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:23:44,885 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 05:23:44,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249939795] [2019-11-24 05:23:44,911 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:23:44,912 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:23:44,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:23:44,924 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:23:44,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:23:54,350 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:23:55,954 WARN L192 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:23:56,086 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:23:56,741 WARN L192 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 614 DAG size of output: 604 [2019-11-24 05:23:57,772 WARN L192 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 704 [2019-11-24 05:24:02,808 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:24:07,400 WARN L192 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:24:31,381 WARN L192 SmtUtils]: Spent 23.53 s on a formula simplification. DAG size of input: 704 DAG size of output: 516