/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/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:01:17,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:01:17,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:01:17,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:01:17,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:01:17,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:01:17,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:01:17,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:01:17,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:01:17,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:01:17,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:01:17,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:01:17,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:01:17,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:01:17,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:01:17,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:01:17,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:01:17,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:01:17,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:01:17,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:01:17,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:01:17,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:01:17,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:01:17,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:01:17,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:01:17,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:01:17,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:01:18,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:01:18,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:01:18,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:01:18,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:01:18,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:01:18,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:01:18,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:01:18,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:01:18,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:01:18,007 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 04:01:18,039 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:01:18,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:01:18,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:01:18,044 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:01:18,044 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:01:18,044 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:01:18,044 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:01:18,045 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:01:18,045 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:01:18,045 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:01:18,045 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:01:18,045 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:01:18,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:01:18,049 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:01:18,049 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:01:18,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:01:18,050 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:01:18,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:01:18,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:01:18,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:01:18,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:01:18,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:01:18,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:01:18,052 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:01:18,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:01:18,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:01:18,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:01:18,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:01:18,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:01:18,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:01:18,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:01:18,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:01:18,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:01:18,055 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:01:18,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:01:18,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:01:18,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:01:18,056 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:01:18,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:01:18,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:01:18,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:01:18,405 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:01:18,405 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:01:18,406 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-24 04:01:18,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbfaf9bc2/0c368e63db634b5d9c504f2f5ee6f9b9/FLAGb06b17e12 [2019-11-24 04:01:19,218 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:01:19,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-24 04:01:19,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbfaf9bc2/0c368e63db634b5d9c504f2f5ee6f9b9/FLAGb06b17e12 [2019-11-24 04:01:19,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbfaf9bc2/0c368e63db634b5d9c504f2f5ee6f9b9 [2019-11-24 04:01:19,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:01:19,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:01:19,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:01:19,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:01:19,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:01:19,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:01:19" (1/1) ... [2019-11-24 04:01:19,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6714df6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:19, skipping insertion in model container [2019-11-24 04:01:19,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:01:19" (1/1) ... [2019-11-24 04:01:19,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:01:19,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:01:20,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:01:20,576 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:01:20,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:01:21,084 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:01:21,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21 WrapperNode [2019-11-24 04:01:21,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:01:21,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:01:21,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:01:21,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:01:21,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:21,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:21,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:01:21,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:01:21,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:01:21,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:01:21,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:21,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:22,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:22,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:22,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:22,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:22,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (1/1) ... [2019-11-24 04:01:22,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:01:22,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:01:22,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:01:22,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:01:22,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (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 04:01:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 04:01:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 04:01:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 04:01:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:01:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:01:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:01:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:01:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:01:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:01:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:01:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 04:01:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:01:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 04:01:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:01:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:02:08,319 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:02:08,319 INFO L284 CfgBuilder]: Removed 2517 assume(true) statements. [2019-11-24 04:02:08,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:02:08 BoogieIcfgContainer [2019-11-24 04:02:08,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:02:08,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:02:08,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:02:08,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:02:08,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:01:19" (1/3) ... [2019-11-24 04:02:08,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712076f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:02:08, skipping insertion in model container [2019-11-24 04:02:08,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:01:21" (2/3) ... [2019-11-24 04:02:08,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712076f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:02:08, skipping insertion in model container [2019-11-24 04:02:08,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:02:08" (3/3) ... [2019-11-24 04:02:08,329 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-24 04:02:08,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:02:08,346 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-24 04:02:08,358 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-24 04:02:08,404 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:02:08,404 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:02:08,404 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:02:08,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:02:08,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:02:08,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:02:08,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:02:08,405 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:02:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states. [2019-11-24 04:02:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-24 04:02:08,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:08,452 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:08,452 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:08,459 INFO L82 PathProgramCache]: Analyzing trace with hash 537391754, now seen corresponding path program 1 times [2019-11-24 04:02:08,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:08,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454869751] [2019-11-24 04:02:08,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:09,605 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 04:02:09,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454869751] [2019-11-24 04:02:09,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:09,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:02:09,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998093498] [2019-11-24 04:02:09,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:02:09,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:02:09,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:02:09,633 INFO L87 Difference]: Start difference. First operand 1241 states. Second operand 3 states. [2019-11-24 04:02:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:11,068 INFO L93 Difference]: Finished difference Result 2548 states and 4290 transitions. [2019-11-24 04:02:11,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:02:11,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-11-24 04:02:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:11,108 INFO L225 Difference]: With dead ends: 2548 [2019-11-24 04:02:11,108 INFO L226 Difference]: Without dead ends: 1342 [2019-11-24 04:02:11,120 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 04:02:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-11-24 04:02:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1247. [2019-11-24 04:02:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-11-24 04:02:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2089 transitions. [2019-11-24 04:02:11,244 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2089 transitions. Word has length 56 [2019-11-24 04:02:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:11,245 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 2089 transitions. [2019-11-24 04:02:11,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:02:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2089 transitions. [2019-11-24 04:02:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-24 04:02:11,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:11,256 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:11,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1012193164, now seen corresponding path program 1 times [2019-11-24 04:02:11,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:11,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011271712] [2019-11-24 04:02:11,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:11,882 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 04:02:11,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011271712] [2019-11-24 04:02:11,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:11,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:02:11,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565132014] [2019-11-24 04:02:11,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:02:11,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:11,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:02:11,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:02:11,886 INFO L87 Difference]: Start difference. First operand 1247 states and 2089 transitions. Second operand 3 states. [2019-11-24 04:02:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:11,942 INFO L93 Difference]: Finished difference Result 2450 states and 4091 transitions. [2019-11-24 04:02:11,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:02:11,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-24 04:02:11,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:11,953 INFO L225 Difference]: With dead ends: 2450 [2019-11-24 04:02:11,953 INFO L226 Difference]: Without dead ends: 1247 [2019-11-24 04:02:11,956 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 04:02:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2019-11-24 04:02:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2019-11-24 04:02:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-11-24 04:02:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2088 transitions. [2019-11-24 04:02:12,001 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2088 transitions. Word has length 67 [2019-11-24 04:02:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:12,002 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 2088 transitions. [2019-11-24 04:02:12,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:02:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2088 transitions. [2019-11-24 04:02:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-24 04:02:12,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:12,004 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:12,005 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1837880936, now seen corresponding path program 1 times [2019-11-24 04:02:12,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:12,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766977567] [2019-11-24 04:02:12,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:12,463 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 04:02:12,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766977567] [2019-11-24 04:02:12,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:12,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:02:12,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908109226] [2019-11-24 04:02:12,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:02:12,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:12,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:02:12,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:02:12,467 INFO L87 Difference]: Start difference. First operand 1247 states and 2088 transitions. Second operand 4 states. [2019-11-24 04:02:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:13,562 INFO L93 Difference]: Finished difference Result 2452 states and 4091 transitions. [2019-11-24 04:02:13,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:02:13,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2019-11-24 04:02:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:13,571 INFO L225 Difference]: With dead ends: 2452 [2019-11-24 04:02:13,571 INFO L226 Difference]: Without dead ends: 1247 [2019-11-24 04:02:13,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:02:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2019-11-24 04:02:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2019-11-24 04:02:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-11-24 04:02:13,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2087 transitions. [2019-11-24 04:02:13,616 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2087 transitions. Word has length 69 [2019-11-24 04:02:13,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:13,617 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 2087 transitions. [2019-11-24 04:02:13,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:02:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2087 transitions. [2019-11-24 04:02:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-24 04:02:13,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:13,620 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:13,621 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2147429306, now seen corresponding path program 1 times [2019-11-24 04:02:13,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:13,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636249059] [2019-11-24 04:02:13,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:14,025 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 04:02:14,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636249059] [2019-11-24 04:02:14,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:14,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:02:14,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613627645] [2019-11-24 04:02:14,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:02:14,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:14,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:02:14,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:02:14,028 INFO L87 Difference]: Start difference. First operand 1247 states and 2087 transitions. Second operand 4 states. [2019-11-24 04:02:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:14,111 INFO L93 Difference]: Finished difference Result 2452 states and 4089 transitions. [2019-11-24 04:02:14,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:02:14,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2019-11-24 04:02:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:14,121 INFO L225 Difference]: With dead ends: 2452 [2019-11-24 04:02:14,122 INFO L226 Difference]: Without dead ends: 1246 [2019-11-24 04:02:14,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:02:14,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2019-11-24 04:02:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1246. [2019-11-24 04:02:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2019-11-24 04:02:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 2082 transitions. [2019-11-24 04:02:14,176 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 2082 transitions. Word has length 72 [2019-11-24 04:02:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:14,178 INFO L462 AbstractCegarLoop]: Abstraction has 1246 states and 2082 transitions. [2019-11-24 04:02:14,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:02:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 2082 transitions. [2019-11-24 04:02:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-24 04:02:14,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:14,181 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:14,181 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash -348539039, now seen corresponding path program 1 times [2019-11-24 04:02:14,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:14,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449754416] [2019-11-24 04:02:14,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:14,804 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 04:02:14,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449754416] [2019-11-24 04:02:14,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:14,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:02:14,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027870212] [2019-11-24 04:02:14,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:02:14,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:14,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:02:14,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:02:14,807 INFO L87 Difference]: Start difference. First operand 1246 states and 2082 transitions. Second operand 3 states. [2019-11-24 04:02:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:14,869 INFO L93 Difference]: Finished difference Result 2455 states and 4089 transitions. [2019-11-24 04:02:14,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:02:14,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-11-24 04:02:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:14,877 INFO L225 Difference]: With dead ends: 2455 [2019-11-24 04:02:14,877 INFO L226 Difference]: Without dead ends: 1253 [2019-11-24 04:02:14,879 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 04:02:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2019-11-24 04:02:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1247. [2019-11-24 04:02:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-11-24 04:02:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2083 transitions. [2019-11-24 04:02:14,915 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2083 transitions. Word has length 97 [2019-11-24 04:02:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:14,915 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 2083 transitions. [2019-11-24 04:02:14,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:02:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2083 transitions. [2019-11-24 04:02:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-24 04:02:14,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:14,917 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:14,917 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:14,917 INFO L82 PathProgramCache]: Analyzing trace with hash 496962559, now seen corresponding path program 1 times [2019-11-24 04:02:14,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:14,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152802993] [2019-11-24 04:02:14,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:02:15,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152802993] [2019-11-24 04:02:15,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:15,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:02:15,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443115739] [2019-11-24 04:02:15,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:02:15,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:15,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:02:15,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:02:15,379 INFO L87 Difference]: Start difference. First operand 1247 states and 2083 transitions. Second operand 3 states. [2019-11-24 04:02:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:28,118 INFO L93 Difference]: Finished difference Result 3563 states and 5931 transitions. [2019-11-24 04:02:28,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:02:28,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-11-24 04:02:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:28,135 INFO L225 Difference]: With dead ends: 3563 [2019-11-24 04:02:28,135 INFO L226 Difference]: Without dead ends: 2347 [2019-11-24 04:02:28,139 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 04:02:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2019-11-24 04:02:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2327. [2019-11-24 04:02:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2019-11-24 04:02:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3903 transitions. [2019-11-24 04:02:28,217 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3903 transitions. Word has length 102 [2019-11-24 04:02:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:28,217 INFO L462 AbstractCegarLoop]: Abstraction has 2327 states and 3903 transitions. [2019-11-24 04:02:28,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:02:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3903 transitions. [2019-11-24 04:02:28,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-24 04:02:28,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:28,219 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:28,219 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:28,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:28,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1192114933, now seen corresponding path program 1 times [2019-11-24 04:02:28,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:28,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722811106] [2019-11-24 04:02:28,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:02:28,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722811106] [2019-11-24 04:02:28,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:02:28,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:02:28,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542304274] [2019-11-24 04:02:28,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:02:28,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:02:28,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:02:28,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:02:28,819 INFO L87 Difference]: Start difference. First operand 2327 states and 3903 transitions. Second operand 3 states. [2019-11-24 04:02:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:02:28,965 INFO L93 Difference]: Finished difference Result 4470 states and 7505 transitions. [2019-11-24 04:02:28,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:02:28,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-11-24 04:02:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:02:28,989 INFO L225 Difference]: With dead ends: 4470 [2019-11-24 04:02:28,989 INFO L226 Difference]: Without dead ends: 4462 [2019-11-24 04:02:28,991 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 04:02:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2019-11-24 04:02:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 2319. [2019-11-24 04:02:29,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2019-11-24 04:02:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3891 transitions. [2019-11-24 04:02:29,241 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3891 transitions. Word has length 103 [2019-11-24 04:02:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:02:29,242 INFO L462 AbstractCegarLoop]: Abstraction has 2319 states and 3891 transitions. [2019-11-24 04:02:29,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:02:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3891 transitions. [2019-11-24 04:02:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-24 04:02:29,243 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:02:29,244 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:02:29,244 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:02:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:02:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1095580060, now seen corresponding path program 1 times [2019-11-24 04:02:29,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:02:29,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519273676] [2019-11-24 04:02:29,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:02:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:29,814 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 04:02:29,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519273676] [2019-11-24 04:02:29,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120123615] [2019-11-24 04:02:29,816 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 04:02:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:02:31,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 7447 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:02:31,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:02:31,574 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 04:02:31,574 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:02:31,802 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 04:02:31,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595132792] [2019-11-24 04:02:31,842 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2019-11-24 04:02:31,842 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:02:31,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:02:31,858 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:02:31,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:02:35,186 WARN L227 Elim1Store]: Array PQE input equivalent to false