/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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:37:57,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:37:57,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:37:57,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:37:57,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:37:57,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:37:57,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:37:57,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:37:57,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:37:57,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:37:57,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:37:57,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:37:57,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:37:57,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:37:57,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:37:57,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:37:57,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:37:57,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:37:57,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:37:57,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:37:57,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:37:57,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:37:57,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:37:57,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:37:57,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:37:57,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:37:57,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:37:57,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:37:57,873 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 05:37:57,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:37:57,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:37:57,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:37:57,888 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:37:57,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:37:57,889 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:37:57,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:37:57,889 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:37:57,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:37:57,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:37:57,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:37:57,890 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:37:57,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:37:57,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:37:57,891 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:37:57,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:37:57,891 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:37:57,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:37:57,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:37:57,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:37:57,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:37:57,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:37:57,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:37:57,893 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:37:57,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:37:57,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:37:57,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:37:57,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:37:57,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:37:57,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:37:57,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:37:57,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:37:57,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:37:57,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:37:57,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:37:57,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:37:57,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:37:57,896 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:37:58,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:37:58,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:37:58,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:37:58,196 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:37:58,197 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:37:58,197 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-11-24 05:37:58,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d507f2918/3b2f145c25944cfdaf14a872d5454e6e/FLAG4ece68d0e [2019-11-24 05:37:58,812 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:37:58,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-11-24 05:37:58,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d507f2918/3b2f145c25944cfdaf14a872d5454e6e/FLAG4ece68d0e [2019-11-24 05:37:59,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d507f2918/3b2f145c25944cfdaf14a872d5454e6e [2019-11-24 05:37:59,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:37:59,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:37:59,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:37:59,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:37:59,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:37:59,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26809f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59, skipping insertion in model container [2019-11-24 05:37:59,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:37:59,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:37:59,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:37:59,688 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:37:59,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:37:59,807 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:37:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59 WrapperNode [2019-11-24 05:37:59,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:37:59,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:37:59,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:37:59,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:37:59,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:37:59,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:37:59,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:37:59,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:37:59,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (1/1) ... [2019-11-24 05:37:59,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:37:59,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:37:59,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:37:59,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:37:59,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (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 05:38:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:38:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:38:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:38:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:38:04,200 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:38:04,201 INFO L284 CfgBuilder]: Removed 366 assume(true) statements. [2019-11-24 05:38:04,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:38:04 BoogieIcfgContainer [2019-11-24 05:38:04,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:38:04,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:38:04,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:38:04,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:38:04,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:37:59" (1/3) ... [2019-11-24 05:38:04,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62708b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:38:04, skipping insertion in model container [2019-11-24 05:38:04,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:59" (2/3) ... [2019-11-24 05:38:04,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62708b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:38:04, skipping insertion in model container [2019-11-24 05:38:04,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:38:04" (3/3) ... [2019-11-24 05:38:04,211 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2019-11-24 05:38:04,221 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:38:04,229 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:38:04,241 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:38:04,266 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:38:04,266 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:38:04,266 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:38:04,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:38:04,267 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:38:04,267 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:38:04,267 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:38:04,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:38:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:38:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:38:04,289 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:38:04,289 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:38:04,290 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:38:04,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:38:04,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1652889040, now seen corresponding path program 1 times [2019-11-24 05:38:04,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:38:04,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282328871] [2019-11-24 05:38:04,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:38:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:38:04,926 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 05:38:04,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282328871] [2019-11-24 05:38:04,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:38:04,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:38:04,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117993636] [2019-11-24 05:38:04,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:38:04,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:38:04,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:38:04,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:38:04,951 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:38:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:38:05,284 INFO L93 Difference]: Finished difference Result 87 states and 128 transitions. [2019-11-24 05:38:05,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:38:05,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:38:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:38:05,302 INFO L225 Difference]: With dead ends: 87 [2019-11-24 05:38:05,302 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:38:05,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-24 05:38:05,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:38:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2019-11-24 05:38:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:38:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:38:05,347 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:38:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:38:05,348 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:38:05,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:38:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:38:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:38:05,349 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:38:05,349 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:38:05,349 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:38:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:38:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1153382935, now seen corresponding path program 1 times [2019-11-24 05:38:05,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:38:05,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265660437] [2019-11-24 05:38:05,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:38:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:38:05,607 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 05:38:05,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265660437] [2019-11-24 05:38:05,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385221142] [2019-11-24 05:38:05,608 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 05:38:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:38:05,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:38:05,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:38:05,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,850 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,931 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 05:38:05,931 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:38:05,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:05,997 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 05:38:05,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1617982946] [2019-11-24 05:38:06,023 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:38:06,023 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:38:06,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:38:06,036 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:38:06,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:38:13,798 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:38:15,470 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:38:15,623 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:38:17,129 WARN L192 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 912 DAG size of output: 768 [2019-11-24 05:38:22,733 WARN L192 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 870 DAG size of output: 868 [2019-11-24 05:38:42,391 WARN L192 SmtUtils]: Spent 9.15 s on a formula simplification. DAG size of input: 3404 DAG size of output: 1304 [2019-11-24 05:39:30,422 WARN L192 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 1279 DAG size of output: 1220