/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/email_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:53:37,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:53:37,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:53:37,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:53:37,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:53:37,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:53:37,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:53:37,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:53:38,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:53:38,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:53:38,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:53:38,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:53:38,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:53:38,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:53:38,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:53:38,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:53:38,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:53:38,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:53:38,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:53:38,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:53:38,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:53:38,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:53:38,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:53:38,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:53:38,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:53:38,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:53:38,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:53:38,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:53:38,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:53:38,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:53:38,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:53:38,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:53:38,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:53:38,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:53:38,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:53:38,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:53:38,028 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 04:53:38,051 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:53:38,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:53:38,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:53:38,052 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:53:38,052 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:53:38,053 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:53:38,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:53:38,053 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:53:38,053 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:53:38,053 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:53:38,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:53:38,054 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:53:38,054 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:53:38,054 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:53:38,055 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:53:38,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:53:38,056 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:53:38,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:53:38,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:53:38,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:53:38,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:53:38,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:53:38,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:53:38,057 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:53:38,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:53:38,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:53:38,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:53:38,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:53:38,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:53:38,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:53:38,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:53:38,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:53:38,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:53:38,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:53:38,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:53:38,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:53:38,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:53:38,060 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:53:38,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:53:38,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:53:38,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:53:38,407 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:53:38,407 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:53:38,408 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2019-11-24 04:53:38,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03144026d/a0167afe399b402f8047d678933be8d3/FLAGf67033c73 [2019-11-24 04:53:39,047 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:53:39,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2019-11-24 04:53:39,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03144026d/a0167afe399b402f8047d678933be8d3/FLAGf67033c73 [2019-11-24 04:53:39,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03144026d/a0167afe399b402f8047d678933be8d3 [2019-11-24 04:53:39,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:53:39,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:53:39,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:53:39,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:53:39,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:53:39,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:53:39" (1/1) ... [2019-11-24 04:53:39,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b57d1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:39, skipping insertion in model container [2019-11-24 04:53:39,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:53:39" (1/1) ... [2019-11-24 04:53:39,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:53:39,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:53:40,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:53:40,115 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:53:40,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:53:40,333 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:53:40,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40 WrapperNode [2019-11-24 04:53:40,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:53:40,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:53:40,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:53:40,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:53:40,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:53:40,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:53:40,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:53:40,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:53:40,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (1/1) ... [2019-11-24 04:53:40,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:53:40,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:53:40,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:53:40,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:53:40,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (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 04:53:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:53:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:53:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:53:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:53:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:53:49,451 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:53:49,451 INFO L284 CfgBuilder]: Removed 319 assume(true) statements. [2019-11-24 04:53:49,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:53:49 BoogieIcfgContainer [2019-11-24 04:53:49,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:53:49,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:53:49,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:53:49,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:53:49,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:53:39" (1/3) ... [2019-11-24 04:53:49,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e2daaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:53:49, skipping insertion in model container [2019-11-24 04:53:49,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:53:40" (2/3) ... [2019-11-24 04:53:49,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e2daaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:53:49, skipping insertion in model container [2019-11-24 04:53:49,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:53:49" (3/3) ... [2019-11-24 04:53:49,461 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product22.cil.c [2019-11-24 04:53:49,471 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:53:49,478 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:53:49,489 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:53:49,510 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:53:49,511 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:53:49,511 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:53:49,511 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:53:49,511 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:53:49,511 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:53:49,511 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:53:49,512 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:53:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-24 04:53:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:53:49,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:49,534 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:49,535 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:53:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:49,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1000119344, now seen corresponding path program 1 times [2019-11-24 04:53:49,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:49,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208955367] [2019-11-24 04:53:49,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:49,892 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 04:53:49,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208955367] [2019-11-24 04:53:49,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:49,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:53:49,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961707263] [2019-11-24 04:53:49,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:53:49,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:49,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:53:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:53:49,917 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-24 04:53:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:49,939 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-11-24 04:53:49,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:53:49,941 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:53:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:49,952 INFO L225 Difference]: With dead ends: 54 [2019-11-24 04:53:49,953 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 04:53:49,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:53:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 04:53:49,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 04:53:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 04:53:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2019-11-24 04:53:49,994 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 7 [2019-11-24 04:53:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:49,995 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2019-11-24 04:53:49,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:53:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2019-11-24 04:53:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:53:49,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:49,996 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:49,996 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:53:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash -470094369, now seen corresponding path program 1 times [2019-11-24 04:53:49,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:49,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348138931] [2019-11-24 04:53:49,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:50,133 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 04:53:50,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348138931] [2019-11-24 04:53:50,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:50,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:53:50,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590321786] [2019-11-24 04:53:50,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:53:50,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:50,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:53:50,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:53:50,138 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand 3 states. [2019-11-24 04:53:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:50,167 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2019-11-24 04:53:50,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:53:50,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:53:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:50,170 INFO L225 Difference]: With dead ends: 50 [2019-11-24 04:53:50,170 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 04:53:50,171 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 04:53:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 04:53:50,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-24 04:53:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-24 04:53:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2019-11-24 04:53:50,188 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 62 transitions. Word has length 8 [2019-11-24 04:53:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:50,189 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 62 transitions. [2019-11-24 04:53:50,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:53:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2019-11-24 04:53:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:53:50,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:50,190 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:50,190 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:53:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash 456130014, now seen corresponding path program 1 times [2019-11-24 04:53:50,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:50,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737116183] [2019-11-24 04:53:50,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:53:50,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737116183] [2019-11-24 04:53:50,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:50,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:53:50,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225560120] [2019-11-24 04:53:50,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:53:50,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:53:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:53:50,367 INFO L87 Difference]: Start difference. First operand 39 states and 62 transitions. Second operand 3 states. [2019-11-24 04:53:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:50,391 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2019-11-24 04:53:50,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:53:50,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-24 04:53:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:50,394 INFO L225 Difference]: With dead ends: 45 [2019-11-24 04:53:50,394 INFO L226 Difference]: Without dead ends: 36 [2019-11-24 04:53:50,394 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:53:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-24 04:53:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-24 04:53:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-24 04:53:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 58 transitions. [2019-11-24 04:53:50,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 58 transitions. Word has length 12 [2019-11-24 04:53:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:50,402 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 58 transitions. [2019-11-24 04:53:50,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:53:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 58 transitions. [2019-11-24 04:53:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:53:50,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:50,403 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:50,403 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:53:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:50,404 INFO L82 PathProgramCache]: Analyzing trace with hash -32278369, now seen corresponding path program 1 times [2019-11-24 04:53:50,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:50,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621881920] [2019-11-24 04:53:50,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:53:50,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621881920] [2019-11-24 04:53:50,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:50,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:53:50,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746069486] [2019-11-24 04:53:50,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:53:50,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:53:50,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:53:50,714 INFO L87 Difference]: Start difference. First operand 36 states and 58 transitions. Second operand 6 states. [2019-11-24 04:53:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:50,989 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2019-11-24 04:53:50,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:53:50,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-24 04:53:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:50,991 INFO L225 Difference]: With dead ends: 68 [2019-11-24 04:53:50,992 INFO L226 Difference]: Without dead ends: 60 [2019-11-24 04:53:50,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:53:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-24 04:53:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-11-24 04:53:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-24 04:53:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2019-11-24 04:53:51,002 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 15 [2019-11-24 04:53:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:51,002 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2019-11-24 04:53:51,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:53:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2019-11-24 04:53:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:53:51,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:51,004 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:51,004 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:53:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:51,005 INFO L82 PathProgramCache]: Analyzing trace with hash 730397243, now seen corresponding path program 1 times [2019-11-24 04:53:51,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:51,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510595840] [2019-11-24 04:53:51,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:51,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510595840] [2019-11-24 04:53:51,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:53:51,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:53:51,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658886827] [2019-11-24 04:53:51,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:53:51,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:53:51,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:53:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:53:51,073 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2019-11-24 04:53:51,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:53:51,114 INFO L93 Difference]: Finished difference Result 168 states and 292 transitions. [2019-11-24 04:53:51,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:53:51,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 04:53:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:53:51,119 INFO L225 Difference]: With dead ends: 168 [2019-11-24 04:53:51,119 INFO L226 Difference]: Without dead ends: 112 [2019-11-24 04:53:51,120 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 04:53:51,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-24 04:53:51,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2019-11-24 04:53:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-24 04:53:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 185 transitions. [2019-11-24 04:53:51,151 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 185 transitions. Word has length 16 [2019-11-24 04:53:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:53:51,151 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 185 transitions. [2019-11-24 04:53:51,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:53:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 185 transitions. [2019-11-24 04:53:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:53:51,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:53:51,154 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:53:51,154 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:53:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:53:51,154 INFO L82 PathProgramCache]: Analyzing trace with hash -248760110, now seen corresponding path program 1 times [2019-11-24 04:53:51,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:53:51,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840093120] [2019-11-24 04:53:51,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:53:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:51,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840093120] [2019-11-24 04:53:51,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390383769] [2019-11-24 04:53:51,396 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 04:53:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:53:51,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:53:51,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:53:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:51,902 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:53:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:53:51,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [248560922] [2019-11-24 04:53:51,954 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 04:53:51,954 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:53:51,960 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:53:51,967 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:53:51,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:54:22,568 WARN L192 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 668 [2019-11-24 04:54:26,511 WARN L192 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 274 DAG size of output: 223 [2019-11-24 04:54:26,854 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 702 [2019-11-24 04:54:29,505 WARN L192 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:30,960 WARN L192 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:32,387 WARN L192 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:33,739 WARN L192 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:35,083 WARN L192 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:36,459 WARN L192 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:37,856 WARN L192 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:39,210 WARN L192 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:40,531 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 1115 [2019-11-24 04:54:42,464 WARN L192 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 1122 [2019-11-24 04:54:44,234 WARN L192 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 1122 [2019-11-24 04:54:46,050 WARN L192 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 1122 [2019-11-24 04:54:47,817 WARN L192 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 1122 [2019-11-24 04:54:49,616 WARN L192 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 1122 [2019-11-24 04:54:51,369 WARN L192 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 1122 [2019-11-24 04:54:51,424 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:55:04,819 WARN L192 SmtUtils]: Spent 13.25 s on a formula simplification. DAG size of input: 702 DAG size of output: 631