/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:37:43,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:37:43,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:37:43,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:37:43,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:37:43,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:37:43,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:37:43,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:37:43,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:37:43,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:37:43,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:37:43,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:37:43,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:37:43,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:37:43,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:37:43,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:37:43,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:37:43,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:37:43,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:37:43,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:37:43,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:37:43,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:37:43,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:37:43,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:37:43,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:37:43,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:37:43,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:37:43,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:37:43,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:37:43,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:37:43,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:37:43,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:37:43,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:37:43,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:37:43,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:37:43,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:37:43,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:37:43,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:37:43,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:37:43,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:37:43,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:37:43,860 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 05:37:43,880 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:37:43,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:37:43,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:37:43,882 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:37:43,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:37:43,882 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:37:43,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:37:43,882 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:37:43,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:37:43,883 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:37:43,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:37:43,884 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:37:43,884 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:37:43,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:37:43,885 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:37:43,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:37:43,886 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:37:43,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:37:43,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:37:43,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:37:43,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:37:43,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:37:43,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:37:43,888 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:37:43,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:37:43,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:37:43,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:37:43,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:37:43,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:37:43,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:37:43,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:37:43,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:37:43,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:37:43,891 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:37:43,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:37:43,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:37:43,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:37:43,892 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:37:44,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:37:44,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:37:44,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:37:44,164 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:37:44,164 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:37:44,165 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2019-11-24 05:37:44,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877621739/8270a27ac41a440b8f69871f4a97b987/FLAG2ade79a43 [2019-11-24 05:37:44,736 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:37:44,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2019-11-24 05:37:44,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877621739/8270a27ac41a440b8f69871f4a97b987/FLAG2ade79a43 [2019-11-24 05:37:45,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877621739/8270a27ac41a440b8f69871f4a97b987 [2019-11-24 05:37:45,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:37:45,101 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:37:45,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:37:45,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:37:45,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:37:45,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2548fb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45, skipping insertion in model container [2019-11-24 05:37:45,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:37:45,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:37:45,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:37:45,654 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:37:45,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:37:45,807 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:37:45,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45 WrapperNode [2019-11-24 05:37:45,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:37:45,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:37:45,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:37:45,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:37:45,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:37:45,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:37:45,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:37:45,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:37:45,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (1/1) ... [2019-11-24 05:37:45,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:37:45,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:37:45,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:37:45,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:37:45,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (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 05:37:46,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:37:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:37:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:37:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:37:48,597 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:37:48,598 INFO L284 CfgBuilder]: Removed 208 assume(true) statements. [2019-11-24 05:37:48,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:37:48 BoogieIcfgContainer [2019-11-24 05:37:48,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:37:48,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:37:48,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:37:48,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:37:48,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:37:45" (1/3) ... [2019-11-24 05:37:48,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeac192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:37:48, skipping insertion in model container [2019-11-24 05:37:48,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:45" (2/3) ... [2019-11-24 05:37:48,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aeac192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:37:48, skipping insertion in model container [2019-11-24 05:37:48,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:37:48" (3/3) ... [2019-11-24 05:37:48,608 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2019-11-24 05:37:48,618 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:37:48,625 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:37:48,636 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:37:48,661 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:37:48,661 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:37:48,661 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:37:48,662 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:37:48,662 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:37:48,662 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:37:48,662 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:37:48,662 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:37:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:37:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:37:48,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:37:48,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:37:48,685 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:37:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:37:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1182319172, now seen corresponding path program 1 times [2019-11-24 05:37:48,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:37:48,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597550815] [2019-11-24 05:37:48,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:37:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:37:48,923 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 05:37:48,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597550815] [2019-11-24 05:37:48,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:37:48,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:37:48,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395605078] [2019-11-24 05:37:48,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:37:48,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:37:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:37:48,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:37:48,945 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:37:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:37:48,966 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:37:48,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:37:48,968 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:37:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:37:48,977 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:37:48,977 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:37:48,981 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 05:37:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:37:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:37:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:37:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:37:49,044 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:37:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:37:49,044 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:37:49,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:37:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:37:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:37:49,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:37:49,046 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:37:49,046 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:37:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:37:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash -689469937, now seen corresponding path program 1 times [2019-11-24 05:37:49,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:37:49,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559359627] [2019-11-24 05:37:49,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:37:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:37:49,430 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 05:37:49,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559359627] [2019-11-24 05:37:49,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:37:49,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:37:49,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716770568] [2019-11-24 05:37:49,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:37:49,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:37:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:37:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:37:49,436 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-24 05:37:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:37:49,631 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2019-11-24 05:37:49,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:37:49,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:37:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:37:49,633 INFO L225 Difference]: With dead ends: 80 [2019-11-24 05:37:49,633 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:37:49,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:37:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:37:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:37:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:37:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:37:49,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:37:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:37:49,642 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:37:49,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:37:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:37:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:37:49,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:37:49,643 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:37:49,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:37:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:37:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1340253093, now seen corresponding path program 1 times [2019-11-24 05:37:49,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:37:49,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911615925] [2019-11-24 05:37:49,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:37:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:37:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:37:49,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911615925] [2019-11-24 05:37:49,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180536150] [2019-11-24 05:37:49,848 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 05:37:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:37:50,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:37:50,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:37:50,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:37:50,137 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:37:50,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:37:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:37:50,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387239487] [2019-11-24 05:37:50,270 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:37:50,271 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:37:50,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:37:50,291 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:37:50,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:37:59,200 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:38:00,848 WARN L192 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:38:00,980 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:38:01,946 WARN L192 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 732 DAG size of output: 687 [2019-11-24 05:38:05,560 WARN L192 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 809 DAG size of output: 807 [2019-11-24 05:38:09,970 WARN L192 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 811 [2019-11-24 05:38:10,654 WARN L192 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 811 [2019-11-24 05:38:11,280 WARN L192 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 811 [2019-11-24 05:38:11,877 WARN L192 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 811 [2019-11-24 05:38:12,483 WARN L192 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 811 [2019-11-24 05:38:13,039 WARN L192 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 811 [2019-11-24 05:38:13,041 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:38:17,674 WARN L192 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:38:46,802 WARN L192 SmtUtils]: Spent 28.74 s on a formula simplification. DAG size of input: 811 DAG size of output: 536 [2019-11-24 05:39:04,019 WARN L192 SmtUtils]: Spent 16.85 s on a formula simplification. DAG size of input: 807 DAG size of output: 570