/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:34:42,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:34:42,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:34:42,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:34:42,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:34:42,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:34:42,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:34:42,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:34:42,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:34:42,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:34:42,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:34:42,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:34:42,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:34:42,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:34:42,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:34:42,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:34:42,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:34:42,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:34:42,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:34:42,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:34:42,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:34:42,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:34:42,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:34:42,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:34:42,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:34:42,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:34:42,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:34:42,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:34:42,336 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 05:34:42,352 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:34:42,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:34:42,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:34:42,353 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:34:42,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:34:42,353 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:34:42,354 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:34:42,354 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:34:42,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:34:42,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:34:42,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:34:42,354 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:34:42,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:34:42,355 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:34:42,355 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:34:42,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:34:42,356 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:34:42,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:34:42,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:34:42,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:34:42,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:34:42,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:34:42,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:34:42,357 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:34:42,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:34:42,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:34:42,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:34:42,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:34:42,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:34:42,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:34:42,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:34:42,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:34:42,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:34:42,359 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:34:42,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:34:42,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:34:42,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:34:42,360 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:34:42,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:34:42,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:34:42,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:34:42,682 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:34:42,683 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:34:42,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2019-11-24 05:34:42,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1abd600/f687d91f1bd544ada991b563ebe59faf/FLAG047db54a7 [2019-11-24 05:34:43,275 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:34:43,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2019-11-24 05:34:43,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1abd600/f687d91f1bd544ada991b563ebe59faf/FLAG047db54a7 [2019-11-24 05:34:43,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1abd600/f687d91f1bd544ada991b563ebe59faf [2019-11-24 05:34:43,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:34:43,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:34:43,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:43,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:34:43,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:34:43,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:43" (1/1) ... [2019-11-24 05:34:43,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4643d4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:43, skipping insertion in model container [2019-11-24 05:34:43,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:43" (1/1) ... [2019-11-24 05:34:43,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:34:43,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:34:44,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:44,112 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:34:44,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:44,231 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:34:44,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44 WrapperNode [2019-11-24 05:34:44,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:44,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:44,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:34:44,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:34:44,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:44,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:34:44,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:34:44,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:34:44,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (1/1) ... [2019-11-24 05:34:44,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:34:44,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:34:44,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:34:44,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:34:44,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (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 05:34:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:34:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:34:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:34:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:34:46,281 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:34:46,282 INFO L284 CfgBuilder]: Removed 134 assume(true) statements. [2019-11-24 05:34:46,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:46 BoogieIcfgContainer [2019-11-24 05:34:46,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:34:46,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:34:46,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:34:46,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:34:46,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:34:43" (1/3) ... [2019-11-24 05:34:46,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d148f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:46, skipping insertion in model container [2019-11-24 05:34:46,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:44" (2/3) ... [2019-11-24 05:34:46,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d148f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:46, skipping insertion in model container [2019-11-24 05:34:46,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:46" (3/3) ... [2019-11-24 05:34:46,296 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2019-11-24 05:34:46,306 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:34:46,315 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:34:46,326 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:34:46,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:34:46,356 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:34:46,356 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:34:46,356 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:34:46,359 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:34:46,359 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:34:46,359 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:34:46,360 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:34:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:34:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:34:46,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:46,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:46,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:46,398 INFO L82 PathProgramCache]: Analyzing trace with hash 553772336, now seen corresponding path program 1 times [2019-11-24 05:34:46,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:46,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371469589] [2019-11-24 05:34:46,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:47,077 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 05:34:47,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371469589] [2019-11-24 05:34:47,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:34:47,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:34:47,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180154155] [2019-11-24 05:34:47,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:34:47,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:34:47,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:34:47,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:34:47,104 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:34:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:34:47,299 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2019-11-24 05:34:47,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:34:47,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:34:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:34:47,314 INFO L225 Difference]: With dead ends: 92 [2019-11-24 05:34:47,314 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:34:47,318 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:34:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:34:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:34:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:34:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:34:47,361 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:34:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:34:47,361 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:34:47,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:34:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:34:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:34:47,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:47,363 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:47,363 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:47,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:47,364 INFO L82 PathProgramCache]: Analyzing trace with hash 617021394, now seen corresponding path program 1 times [2019-11-24 05:34:47,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:47,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96921733] [2019-11-24 05:34:47,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:47,603 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 05:34:47,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96921733] [2019-11-24 05:34:47,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390328171] [2019-11-24 05:34:47,604 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 05:34:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:47,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:34:47,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:34:47,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,883 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 05:34:47,883 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:34:47,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:47,947 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 05:34:47,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241578167] [2019-11-24 05:34:47,994 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:34:47,994 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:34:48,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:34:48,007 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:34:48,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:34:57,797 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:34:59,544 WARN L192 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:34:59,679 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:35:00,786 WARN L192 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 703 DAG size of output: 685 [2019-11-24 05:35:11,915 WARN L192 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 796 DAG size of output: 796 [2019-11-24 05:35:27,765 WARN L192 SmtUtils]: Spent 10.38 s on a formula simplification. DAG size of input: 2649 DAG size of output: 1955