/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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 01:56:12,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 01:56:12,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 01:56:12,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 01:56:12,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 01:56:12,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 01:56:12,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 01:56:12,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 01:56:12,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 01:56:12,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 01:56:12,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 01:56:12,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 01:56:12,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 01:56:12,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 01:56:12,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 01:56:12,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 01:56:12,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 01:56:12,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 01:56:12,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 01:56:12,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 01:56:12,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 01:56:12,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 01:56:12,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 01:56:12,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 01:56:12,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 01:56:12,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 01:56:12,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 01:56:12,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 01:56:12,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 01:56:12,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 01:56:12,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 01:56:12,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 01:56:12,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 01:56:12,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 01:56:12,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 01:56:12,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 01:56:12,954 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 01:56:12,974 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 01:56:12,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 01:56:12,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 01:56:12,976 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 01:56:12,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 01:56:12,976 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 01:56:12,976 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 01:56:12,976 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 01:56:12,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 01:56:12,977 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 01:56:12,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 01:56:12,978 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 01:56:12,978 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 01:56:12,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 01:56:12,979 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 01:56:12,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 01:56:12,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 01:56:12,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 01:56:12,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 01:56:12,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 01:56:12,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 01:56:12,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 01:56:12,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 01:56:12,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 01:56:12,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 01:56:12,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 01:56:12,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 01:56:12,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 01:56:12,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 01:56:12,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 01:56:12,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 01:56:12,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 01:56:12,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 01:56:12,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 01:56:12,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 01:56:12,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 01:56:12,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 01:56:12,985 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 01:56:13,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 01:56:13,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 01:56:13,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 01:56:13,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 01:56:13,280 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 01:56:13,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2019-11-24 01:56:13,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3242d493/8e943f6d9ed1474eaae89ee8931be708/FLAG846b716d2 [2019-11-24 01:56:14,203 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 01:56:14,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2019-11-24 01:56:14,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3242d493/8e943f6d9ed1474eaae89ee8931be708/FLAG846b716d2 [2019-11-24 01:56:14,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3242d493/8e943f6d9ed1474eaae89ee8931be708 [2019-11-24 01:56:14,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 01:56:14,369 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 01:56:14,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 01:56:14,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 01:56:14,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 01:56:14,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:14" (1/1) ... [2019-11-24 01:56:14,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f32b285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:14, skipping insertion in model container [2019-11-24 01:56:14,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:56:14" (1/1) ... [2019-11-24 01:56:14,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 01:56:14,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 01:56:16,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:56:16,721 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 01:56:16,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:56:17,527 INFO L208 MainTranslator]: Completed translation [2019-11-24 01:56:17,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17 WrapperNode [2019-11-24 01:56:17,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 01:56:17,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 01:56:17,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 01:56:17,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 01:56:17,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:17,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:17,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 01:56:17,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 01:56:17,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 01:56:17,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 01:56:17,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:17,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:18,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:18,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:18,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:18,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:18,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (1/1) ... [2019-11-24 01:56:18,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 01:56:18,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 01:56:18,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 01:56:18,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 01:56:18,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (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 01:56:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 01:56:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 01:56:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 01:56:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 01:56:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 01:56:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 01:56:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 01:56:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 01:56:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 01:56:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 01:56:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 01:56:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 01:56:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 01:56:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 01:56:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 01:56:52,795 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 01:56:52,795 INFO L284 CfgBuilder]: Removed 1588 assume(true) statements. [2019-11-24 01:56:52,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:52 BoogieIcfgContainer [2019-11-24 01:56:52,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 01:56:52,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 01:56:52,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 01:56:52,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 01:56:52,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:56:14" (1/3) ... [2019-11-24 01:56:52,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dbfbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:52, skipping insertion in model container [2019-11-24 01:56:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:56:17" (2/3) ... [2019-11-24 01:56:52,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dbfbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:56:52, skipping insertion in model container [2019-11-24 01:56:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:56:52" (3/3) ... [2019-11-24 01:56:52,809 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2019-11-24 01:56:52,819 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 01:56:52,830 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 01:56:52,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 01:56:52,870 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 01:56:52,870 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 01:56:52,870 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 01:56:52,870 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 01:56:52,870 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 01:56:52,870 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 01:56:52,871 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 01:56:52,871 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 01:56:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states. [2019-11-24 01:56:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 01:56:52,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:56:52,904 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:56:52,905 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:56:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:56:52,911 INFO L82 PathProgramCache]: Analyzing trace with hash -97181177, now seen corresponding path program 1 times [2019-11-24 01:56:52,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:56:52,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613183215] [2019-11-24 01:56:52,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:56:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:56:53,648 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 01:56:53,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613183215] [2019-11-24 01:56:53,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:56:53,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:56:53,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051725157] [2019-11-24 01:56:53,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:56:53,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:56:53,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:56:53,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:56:53,676 INFO L87 Difference]: Start difference. First operand 283 states. Second operand 3 states. [2019-11-24 01:56:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:56:56,165 INFO L93 Difference]: Finished difference Result 819 states and 1371 transitions. [2019-11-24 01:56:56,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:56:56,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 01:56:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:56:56,197 INFO L225 Difference]: With dead ends: 819 [2019-11-24 01:56:56,197 INFO L226 Difference]: Without dead ends: 500 [2019-11-24 01:56:56,208 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 01:56:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-24 01:56:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2019-11-24 01:56:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-11-24 01:56:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 789 transitions. [2019-11-24 01:56:56,316 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 789 transitions. Word has length 17 [2019-11-24 01:56:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:56:56,317 INFO L462 AbstractCegarLoop]: Abstraction has 500 states and 789 transitions. [2019-11-24 01:56:56,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:56:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 789 transitions. [2019-11-24 01:56:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-24 01:56:56,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:56:56,326 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] [2019-11-24 01:56:56,326 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:56:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:56:56,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1353830363, now seen corresponding path program 1 times [2019-11-24 01:56:56,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:56:56,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563247972] [2019-11-24 01:56:56,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:56:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:56:56,630 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 01:56:56,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563247972] [2019-11-24 01:56:56,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:56:56,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 01:56:56,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345145962] [2019-11-24 01:56:56,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 01:56:56,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:56:56,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 01:56:56,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 01:56:56,634 INFO L87 Difference]: Start difference. First operand 500 states and 789 transitions. Second operand 4 states. [2019-11-24 01:56:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:56:57,063 INFO L93 Difference]: Finished difference Result 990 states and 1562 transitions. [2019-11-24 01:56:57,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 01:56:57,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-11-24 01:56:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:56:57,069 INFO L225 Difference]: With dead ends: 990 [2019-11-24 01:56:57,069 INFO L226 Difference]: Without dead ends: 986 [2019-11-24 01:56:57,071 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 01:56:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2019-11-24 01:56:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 942. [2019-11-24 01:56:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2019-11-24 01:56:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1499 transitions. [2019-11-24 01:56:57,106 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1499 transitions. Word has length 21 [2019-11-24 01:56:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:56:57,107 INFO L462 AbstractCegarLoop]: Abstraction has 942 states and 1499 transitions. [2019-11-24 01:56:57,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 01:56:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1499 transitions. [2019-11-24 01:56:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-24 01:56:57,110 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:56:57,111 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] [2019-11-24 01:56:57,111 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:56:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:56:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash 638888992, now seen corresponding path program 1 times [2019-11-24 01:56:57,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:56:57,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375277592] [2019-11-24 01:56:57,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:56:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:56:57,308 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 01:56:57,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375277592] [2019-11-24 01:56:57,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:56:57,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:56:57,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340546491] [2019-11-24 01:56:57,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:56:57,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:56:57,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:56:57,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:56:57,311 INFO L87 Difference]: Start difference. First operand 942 states and 1499 transitions. Second operand 3 states. [2019-11-24 01:56:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:56:57,999 INFO L93 Difference]: Finished difference Result 2190 states and 3483 transitions. [2019-11-24 01:56:57,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:56:58,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-24 01:56:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:56:58,006 INFO L225 Difference]: With dead ends: 2190 [2019-11-24 01:56:58,007 INFO L226 Difference]: Without dead ends: 1258 [2019-11-24 01:56:58,010 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 01:56:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2019-11-24 01:56:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1178. [2019-11-24 01:56:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2019-11-24 01:56:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1873 transitions. [2019-11-24 01:56:58,200 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1873 transitions. Word has length 40 [2019-11-24 01:56:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:56:58,200 INFO L462 AbstractCegarLoop]: Abstraction has 1178 states and 1873 transitions. [2019-11-24 01:56:58,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:56:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1873 transitions. [2019-11-24 01:56:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-24 01:56:58,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:56:58,205 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 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] [2019-11-24 01:56:58,206 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:56:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:56:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1501599916, now seen corresponding path program 1 times [2019-11-24 01:56:58,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:56:58,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284317348] [2019-11-24 01:56:58,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:56:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:56:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 01:56:58,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284317348] [2019-11-24 01:56:58,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:56:58,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:56:58,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986950139] [2019-11-24 01:56:58,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:56:58,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:56:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:56:58,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:56:58,467 INFO L87 Difference]: Start difference. First operand 1178 states and 1873 transitions. Second operand 3 states. [2019-11-24 01:56:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:56:58,762 INFO L93 Difference]: Finished difference Result 2316 states and 3688 transitions. [2019-11-24 01:56:58,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:56:58,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-11-24 01:56:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:56:58,769 INFO L225 Difference]: With dead ends: 2316 [2019-11-24 01:56:58,769 INFO L226 Difference]: Without dead ends: 1148 [2019-11-24 01:56:58,771 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 01:56:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2019-11-24 01:56:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1144. [2019-11-24 01:56:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2019-11-24 01:56:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1823 transitions. [2019-11-24 01:56:58,811 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1823 transitions. Word has length 64 [2019-11-24 01:56:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:56:58,811 INFO L462 AbstractCegarLoop]: Abstraction has 1144 states and 1823 transitions. [2019-11-24 01:56:58,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:56:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1823 transitions. [2019-11-24 01:56:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-24 01:56:58,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:56:58,815 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 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] [2019-11-24 01:56:58,816 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:56:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:56:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1012995818, now seen corresponding path program 1 times [2019-11-24 01:56:58,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:56:58,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88199184] [2019-11-24 01:56:58,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:56:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:56:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 01:56:59,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88199184] [2019-11-24 01:56:59,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:56:59,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:56:59,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113582825] [2019-11-24 01:56:59,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:56:59,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:56:59,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:56:59,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:56:59,185 INFO L87 Difference]: Start difference. First operand 1144 states and 1823 transitions. Second operand 3 states. [2019-11-24 01:57:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:57:02,640 INFO L93 Difference]: Finished difference Result 2550 states and 4088 transitions. [2019-11-24 01:57:02,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:57:02,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-11-24 01:57:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:57:02,650 INFO L225 Difference]: With dead ends: 2550 [2019-11-24 01:57:02,650 INFO L226 Difference]: Without dead ends: 1464 [2019-11-24 01:57:02,653 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 01:57:02,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2019-11-24 01:57:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1422. [2019-11-24 01:57:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2019-11-24 01:57:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2264 transitions. [2019-11-24 01:57:02,699 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2264 transitions. Word has length 71 [2019-11-24 01:57:02,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:57:02,700 INFO L462 AbstractCegarLoop]: Abstraction has 1422 states and 2264 transitions. [2019-11-24 01:57:02,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:57:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2264 transitions. [2019-11-24 01:57:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-24 01:57:02,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:57:02,704 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 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] [2019-11-24 01:57:02,704 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:57:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:57:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash 739311953, now seen corresponding path program 1 times [2019-11-24 01:57:02,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:57:02,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234117443] [2019-11-24 01:57:02,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:57:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:57:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 01:57:03,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234117443] [2019-11-24 01:57:03,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835570788] [2019-11-24 01:57:03,014 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 01:57:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:57:04,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 01:57:04,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:57:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-24 01:57:04,590 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:57:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-24 01:57:04,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 01:57:04,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-11-24 01:57:04,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415477056] [2019-11-24 01:57:04,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:57:04,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:57:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:57:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 01:57:04,610 INFO L87 Difference]: Start difference. First operand 1422 states and 2264 transitions. Second operand 3 states. [2019-11-24 01:57:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:57:04,838 INFO L93 Difference]: Finished difference Result 3328 states and 5318 transitions. [2019-11-24 01:57:04,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:57:04,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-11-24 01:57:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:57:04,871 INFO L225 Difference]: With dead ends: 3328 [2019-11-24 01:57:04,871 INFO L226 Difference]: Without dead ends: 2622 [2019-11-24 01:57:04,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 01:57:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2019-11-24 01:57:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1450. [2019-11-24 01:57:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2019-11-24 01:57:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2292 transitions. [2019-11-24 01:57:04,994 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2292 transitions. Word has length 80 [2019-11-24 01:57:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:57:04,994 INFO L462 AbstractCegarLoop]: Abstraction has 1450 states and 2292 transitions. [2019-11-24 01:57:04,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:57:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2292 transitions. [2019-11-24 01:57:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-24 01:57:04,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:57:05,000 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 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] [2019-11-24 01:57:05,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:57:05,201 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:57:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:57:05,202 INFO L82 PathProgramCache]: Analyzing trace with hash 143775794, now seen corresponding path program 1 times [2019-11-24 01:57:05,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:57:05,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27049214] [2019-11-24 01:57:05,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:57:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:57:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 01:57:05,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27049214] [2019-11-24 01:57:05,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145375410] [2019-11-24 01:57:05,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:57:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:57:07,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 01:57:07,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:57:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-24 01:57:07,091 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:57:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-24 01:57:07,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 01:57:07,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-11-24 01:57:07,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352401012] [2019-11-24 01:57:07,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 01:57:07,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:57:07,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 01:57:07,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-24 01:57:07,132 INFO L87 Difference]: Start difference. First operand 1450 states and 2292 transitions. Second operand 5 states. [2019-11-24 01:57:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:57:11,920 INFO L93 Difference]: Finished difference Result 3990 states and 6318 transitions. [2019-11-24 01:57:11,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 01:57:11,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2019-11-24 01:57:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:57:11,938 INFO L225 Difference]: With dead ends: 3990 [2019-11-24 01:57:11,939 INFO L226 Difference]: Without dead ends: 2598 [2019-11-24 01:57:12,058 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-24 01:57:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2019-11-24 01:57:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1422. [2019-11-24 01:57:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2019-11-24 01:57:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2222 transitions. [2019-11-24 01:57:12,136 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2222 transitions. Word has length 81 [2019-11-24 01:57:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:57:12,136 INFO L462 AbstractCegarLoop]: Abstraction has 1422 states and 2222 transitions. [2019-11-24 01:57:12,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 01:57:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2222 transitions. [2019-11-24 01:57:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-24 01:57:12,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:57:12,140 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 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] [2019-11-24 01:57:12,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:57:12,354 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:57:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:57:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2054952403, now seen corresponding path program 1 times [2019-11-24 01:57:12,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:57:12,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623971048] [2019-11-24 01:57:12,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:57:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:57:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 01:57:12,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623971048] [2019-11-24 01:57:12,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812322388] [2019-11-24 01:57:12,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:57:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:57:14,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 4102 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-24 01:57:14,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:57:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 01:57:14,266 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:57:14,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:57:14,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 01:57:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 01:57:14,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538253257] [2019-11-24 01:57:14,404 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2019-11-24 01:57:14,404 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 01:57:14,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 01:57:14,422 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 01:57:14,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 01:57:23,595 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |#t~string204.base| |#t~string207.base|) [2019-11-24 01:57:25,625 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |#t~string204.base| |#t~string279.base|) [2019-11-24 01:57:27,713 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |#t~string204.base| |#t~string280.base|) [2019-11-24 01:57:29,768 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |#t~string204.base| |#t~string281.base|) [2019-11-24 01:57:31,834 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |#t~string204.base| |#t~string282.base|)