/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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:21:16,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:21:16,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:21:16,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:21:16,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:21:16,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:21:16,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:21:16,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:21:16,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:21:16,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:21:16,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:21:16,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:21:16,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:21:16,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:21:16,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:21:16,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:21:16,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:21:16,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:21:16,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:21:16,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:21:16,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:21:16,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:21:16,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:21:16,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:21:16,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:21:16,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:21:16,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:21:16,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:21:16,212 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 05:21:16,238 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:21:16,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:21:16,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:21:16,239 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:21:16,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:21:16,240 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:21:16,240 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:21:16,240 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:21:16,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:21:16,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:21:16,241 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:21:16,241 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:21:16,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:21:16,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:21:16,241 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:21:16,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:21:16,242 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:21:16,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:21:16,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:21:16,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:21:16,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:21:16,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:21:16,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:21:16,244 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:21:16,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:21:16,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:21:16,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:21:16,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:21:16,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:21:16,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:21:16,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:21:16,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:21:16,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:21:16,246 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:21:16,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:21:16,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:21:16,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:21:16,247 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:21:16,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:21:16,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:21:16,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:21:16,587 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:21:16,587 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:21:16,588 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2019-11-24 05:21:16,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b578c1318/8cf163284f0b482d859b84c679e70ca0/FLAG520241c48 [2019-11-24 05:21:17,170 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:21:17,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2019-11-24 05:21:17,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b578c1318/8cf163284f0b482d859b84c679e70ca0/FLAG520241c48 [2019-11-24 05:21:17,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b578c1318/8cf163284f0b482d859b84c679e70ca0 [2019-11-24 05:21:17,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:21:17,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:21:17,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:17,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:21:17,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:21:17,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:21:17" (1/1) ... [2019-11-24 05:21:17,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae3de54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:17, skipping insertion in model container [2019-11-24 05:21:17,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:21:17" (1/1) ... [2019-11-24 05:21:17,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:21:17,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:21:17,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:18,009 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:21:18,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:18,177 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:21:18,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18 WrapperNode [2019-11-24 05:21:18,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:18,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:18,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:21:18,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:21:18,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:18,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:21:18,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:21:18,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:21:18,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... [2019-11-24 05:21:18,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:21:18,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:21:18,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:21:18,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:21:18,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:21:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:21:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:21:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:21:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:21:20,844 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:21:20,845 INFO L284 CfgBuilder]: Removed 196 assume(true) statements. [2019-11-24 05:21:20,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:20 BoogieIcfgContainer [2019-11-24 05:21:20,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:21:20,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:21:20,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:21:20,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:21:20,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:21:17" (1/3) ... [2019-11-24 05:21:20,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d73270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:20, skipping insertion in model container [2019-11-24 05:21:20,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:18" (2/3) ... [2019-11-24 05:21:20,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d73270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:20, skipping insertion in model container [2019-11-24 05:21:20,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:20" (3/3) ... [2019-11-24 05:21:20,855 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2019-11-24 05:21:20,865 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:21:20,873 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:21:20,885 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:21:20,911 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:21:20,911 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:21:20,911 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:21:20,911 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:21:20,912 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:21:20,912 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:21:20,912 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:21:20,912 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:21:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:21:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:21:20,936 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:20,937 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:20,937 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1933450131, now seen corresponding path program 1 times [2019-11-24 05:21:20,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:20,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128980684] [2019-11-24 05:21:20,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:21,342 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 05:21:21,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128980684] [2019-11-24 05:21:21,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:21,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:21:21,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818973528] [2019-11-24 05:21:21,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:21:21,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:21,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:21:21,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:21:21,374 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:21:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:21,661 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2019-11-24 05:21:21,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:21:21,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:21:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:21,675 INFO L225 Difference]: With dead ends: 88 [2019-11-24 05:21:21,675 INFO L226 Difference]: Without dead ends: 54 [2019-11-24 05:21:21,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:21:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-24 05:21:21,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2019-11-24 05:21:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:21:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-24 05:21:21,737 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 8 [2019-11-24 05:21:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:21,738 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-24 05:21:21,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:21:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2019-11-24 05:21:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:21:21,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:21,740 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:21,740 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:21,741 INFO L82 PathProgramCache]: Analyzing trace with hash 904107409, now seen corresponding path program 1 times [2019-11-24 05:21:21,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:21,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891645030] [2019-11-24 05:21:21,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:21,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891645030] [2019-11-24 05:21:21,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:21,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:21:21,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458452608] [2019-11-24 05:21:21,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:21:21,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:21,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:21:21,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:21:21,929 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 3 states. [2019-11-24 05:21:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:21,986 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2019-11-24 05:21:21,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:21:21,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-24 05:21:21,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:21,989 INFO L225 Difference]: With dead ends: 59 [2019-11-24 05:21:21,989 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:21:21,990 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 05:21:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:21:22,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-24 05:21:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-24 05:21:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2019-11-24 05:21:22,004 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 11 [2019-11-24 05:21:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:22,005 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2019-11-24 05:21:22,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:21:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2019-11-24 05:21:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:21:22,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:22,006 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:22,006 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1613906149, now seen corresponding path program 1 times [2019-11-24 05:21:22,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:22,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186818129] [2019-11-24 05:21:22,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:22,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186818129] [2019-11-24 05:21:22,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694085052] [2019-11-24 05:21:22,191 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 05:21:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:22,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 50 conjunts are in the unsatisfiable core [2019-11-24 05:21:22,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:21:22,718 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-11-24 05:21:22,913 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-11-24 05:21:22,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:22,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:23,827 WARN L192 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2019-11-24 05:21:24,193 WARN L192 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-11-24 05:21:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:21:24,204 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:21:24,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:24,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071311419] [2019-11-24 05:21:24,510 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:21:24,510 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:21:24,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:21:24,529 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:21:24,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:21:34,566 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:21:36,208 WARN L192 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:21:36,339 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:21:37,015 WARN L192 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 609 [2019-11-24 05:21:37,584 WARN L192 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 609 [2019-11-24 05:21:38,167 WARN L192 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 609 [2019-11-24 05:21:38,698 WARN L192 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 610 [2019-11-24 05:21:40,298 WARN L192 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 713 [2019-11-24 05:21:42,639 WARN L192 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 818 DAG size of output: 787 [2019-11-24 05:21:43,945 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 818 DAG size of output: 787 [2019-11-24 05:21:44,831 WARN L192 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 783 DAG size of output: 783 [2019-11-24 05:21:45,905 WARN L192 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 796 [2019-11-24 05:21:46,452 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 05:21:48,777 WARN L192 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 799 DAG size of output: 799 [2019-11-24 05:22:00,016 WARN L192 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 1177 DAG size of output: 1052 [2019-11-24 05:22:05,026 WARN L192 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 1177 DAG size of output: 1052 [2019-11-24 05:22:09,441 WARN L192 SmtUtils]: Spent 4.40 s on a formula simplification. DAG size of input: 1029 DAG size of output: 1026 [2019-11-24 05:22:15,043 WARN L192 SmtUtils]: Spent 5.53 s on a formula simplification. DAG size of input: 1088 DAG size of output: 1080 [2019-11-24 05:22:15,084 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 05:22:30,350 WARN L192 SmtUtils]: Spent 5.95 s on a formula simplification. DAG size of input: 1077 DAG size of output: 1077