/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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:25:40,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:25:40,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:25:41,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:25:41,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:25:41,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:25:41,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:25:41,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:25:41,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:25:41,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:25:41,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:25:41,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:25:41,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:25:41,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:25:41,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:25:41,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:25:41,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:25:41,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:25:41,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:25:41,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:25:41,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:25:41,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:25:41,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:25:41,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:25:41,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 03:25:41,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 03:25:41,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 03:25:41,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 03:25:41,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 03:25:41,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 03:25:41,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 03:25:41,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 03:25:41,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 03:25:41,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:25:41,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:25:41,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:25:41,082 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 03:25:41,109 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:25:41,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:25:41,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:25:41,111 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:25:41,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:25:41,111 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:25:41,111 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:25:41,112 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:25:41,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:25:41,112 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:25:41,113 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:25:41,113 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:25:41,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:25:41,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:25:41,114 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:25:41,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:25:41,116 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:25:41,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:25:41,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:25:41,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:25:41,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:25:41,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:25:41,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:25:41,117 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:25:41,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:25:41,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:25:41,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:25:41,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:25:41,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:25:41,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:25:41,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:25:41,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:25:41,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:25:41,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:25:41,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:25:41,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:25:41,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:25:41,121 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:25:41,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:25:41,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:25:41,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:25:41,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:25:41,412 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:25:41,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2019-11-24 03:25:41,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7b84b96/6c31973b5cb443ac85e69e29821d4a83/FLAG7db2cd39f [2019-11-24 03:25:42,324 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:25:42,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2019-11-24 03:25:42,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7b84b96/6c31973b5cb443ac85e69e29821d4a83/FLAG7db2cd39f [2019-11-24 03:25:42,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7b84b96/6c31973b5cb443ac85e69e29821d4a83 [2019-11-24 03:25:42,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:25:42,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:25:42,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:25:42,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:25:42,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:25:42,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:25:42" (1/1) ... [2019-11-24 03:25:42,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f501c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:42, skipping insertion in model container [2019-11-24 03:25:42,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:25:42" (1/1) ... [2019-11-24 03:25:42,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:25:43,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:25:44,999 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2019-11-24 03:25:45,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:25:45,114 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:25:45,441 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2019-11-24 03:25:45,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:25:45,735 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:25:45,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45 WrapperNode [2019-11-24 03:25:45,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:25:45,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:25:45,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:25:45,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:25:45,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:45,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:25:46,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:25:46,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:25:46,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:25:46,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (1/1) ... [2019-11-24 03:25:46,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:25:46,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:25:46,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:25:46,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:25:46,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (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 03:25:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 03:25:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 03:25:46,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:25:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:25:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2019-11-24 03:25:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:25:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:25:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 03:25:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 03:25:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 03:25:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 03:25:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:25:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:25:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 03:25:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:25:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:26:36,791 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:26:36,792 INFO L284 CfgBuilder]: Removed 1887 assume(true) statements. [2019-11-24 03:26:36,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:26:36 BoogieIcfgContainer [2019-11-24 03:26:36,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:26:36,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:26:36,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:26:36,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:26:36,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:25:42" (1/3) ... [2019-11-24 03:26:36,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5789c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:26:36, skipping insertion in model container [2019-11-24 03:26:36,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:45" (2/3) ... [2019-11-24 03:26:36,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5789c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:26:36, skipping insertion in model container [2019-11-24 03:26:36,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:26:36" (3/3) ... [2019-11-24 03:26:36,801 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2019-11-24 03:26:36,809 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:26:36,818 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 03:26:36,830 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 03:26:36,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:26:36,860 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:26:36,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:26:36,860 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:26:36,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:26:36,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:26:36,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:26:36,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:26:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states. [2019-11-24 03:26:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-24 03:26:36,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:36,905 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] [2019-11-24 03:26:36,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1018525346, now seen corresponding path program 1 times [2019-11-24 03:26:36,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:36,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577196519] [2019-11-24 03:26:36,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:37,675 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 03:26:37,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577196519] [2019-11-24 03:26:37,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:37,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:26:37,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214388060] [2019-11-24 03:26:37,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:37,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:37,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:37,699 INFO L87 Difference]: Start difference. First operand 612 states. Second operand 3 states. [2019-11-24 03:26:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:38,154 INFO L93 Difference]: Finished difference Result 1782 states and 3133 transitions. [2019-11-24 03:26:38,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:38,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-24 03:26:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:38,182 INFO L225 Difference]: With dead ends: 1782 [2019-11-24 03:26:38,182 INFO L226 Difference]: Without dead ends: 1169 [2019-11-24 03:26:38,190 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 03:26:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-24 03:26:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2019-11-24 03:26:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-11-24 03:26:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 2050 transitions. [2019-11-24 03:26:38,330 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 2050 transitions. Word has length 36 [2019-11-24 03:26:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:38,331 INFO L462 AbstractCegarLoop]: Abstraction has 1169 states and 2050 transitions. [2019-11-24 03:26:38,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 2050 transitions. [2019-11-24 03:26:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-24 03:26:38,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:38,343 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] [2019-11-24 03:26:38,344 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:38,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1577588240, now seen corresponding path program 1 times [2019-11-24 03:26:38,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:38,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280927824] [2019-11-24 03:26:38,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:38,806 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 03:26:38,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280927824] [2019-11-24 03:26:38,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:38,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:26:38,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451584483] [2019-11-24 03:26:38,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:38,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:38,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:38,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:38,811 INFO L87 Difference]: Start difference. First operand 1169 states and 2050 transitions. Second operand 3 states. [2019-11-24 03:26:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:38,939 INFO L93 Difference]: Finished difference Result 2263 states and 3973 transitions. [2019-11-24 03:26:38,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:38,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-24 03:26:38,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:38,955 INFO L225 Difference]: With dead ends: 2263 [2019-11-24 03:26:38,956 INFO L226 Difference]: Without dead ends: 2260 [2019-11-24 03:26:38,958 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 03:26:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2019-11-24 03:26:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2260. [2019-11-24 03:26:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2260 states. [2019-11-24 03:26:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3968 transitions. [2019-11-24 03:26:39,035 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3968 transitions. Word has length 39 [2019-11-24 03:26:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:39,036 INFO L462 AbstractCegarLoop]: Abstraction has 2260 states and 3968 transitions. [2019-11-24 03:26:39,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3968 transitions. [2019-11-24 03:26:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-24 03:26:39,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:39,045 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-11-24 03:26:39,045 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1586621556, now seen corresponding path program 1 times [2019-11-24 03:26:39,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:39,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69352806] [2019-11-24 03:26:39,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:26:39,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69352806] [2019-11-24 03:26:39,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:39,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:26:39,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096857638] [2019-11-24 03:26:39,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:39,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:39,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:39,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:39,505 INFO L87 Difference]: Start difference. First operand 2260 states and 3968 transitions. Second operand 3 states. [2019-11-24 03:26:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:39,765 INFO L93 Difference]: Finished difference Result 6484 states and 11377 transitions. [2019-11-24 03:26:39,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:39,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2019-11-24 03:26:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:39,791 INFO L225 Difference]: With dead ends: 6484 [2019-11-24 03:26:39,791 INFO L226 Difference]: Without dead ends: 4245 [2019-11-24 03:26:39,796 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 03:26:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2019-11-24 03:26:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 4240. [2019-11-24 03:26:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4240 states. [2019-11-24 03:26:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 7440 transitions. [2019-11-24 03:26:39,958 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 7440 transitions. Word has length 63 [2019-11-24 03:26:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:39,959 INFO L462 AbstractCegarLoop]: Abstraction has 4240 states and 7440 transitions. [2019-11-24 03:26:39,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 7440 transitions. [2019-11-24 03:26:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-24 03:26:39,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:39,965 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-24 03:26:39,966 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash -625213975, now seen corresponding path program 1 times [2019-11-24 03:26:39,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:39,967 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809144710] [2019-11-24 03:26:39,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-24 03:26:40,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809144710] [2019-11-24 03:26:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:40,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:26:40,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572012500] [2019-11-24 03:26:40,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:26:40,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:40,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:26:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:26:40,487 INFO L87 Difference]: Start difference. First operand 4240 states and 7440 transitions. Second operand 4 states. [2019-11-24 03:26:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:41,981 INFO L93 Difference]: Finished difference Result 20586 states and 36106 transitions. [2019-11-24 03:26:41,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:26:41,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2019-11-24 03:26:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:42,098 INFO L225 Difference]: With dead ends: 20586 [2019-11-24 03:26:42,098 INFO L226 Difference]: Without dead ends: 16367 [2019-11-24 03:26:42,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 03:26:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16367 states. [2019-11-24 03:26:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16367 to 4248. [2019-11-24 03:26:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4248 states. [2019-11-24 03:26:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 7448 transitions. [2019-11-24 03:26:42,475 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 7448 transitions. Word has length 82 [2019-11-24 03:26:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:42,476 INFO L462 AbstractCegarLoop]: Abstraction has 4248 states and 7448 transitions. [2019-11-24 03:26:42,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:26:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 7448 transitions. [2019-11-24 03:26:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-24 03:26:42,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:42,483 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-24 03:26:42,484 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:42,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1967159417, now seen corresponding path program 1 times [2019-11-24 03:26:42,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:42,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612710716] [2019-11-24 03:26:42,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-24 03:26:49,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612710716] [2019-11-24 03:26:49,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:49,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:26:49,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230949268] [2019-11-24 03:26:49,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:49,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:49,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:49,740 INFO L87 Difference]: Start difference. First operand 4248 states and 7448 transitions. Second operand 3 states. [2019-11-24 03:26:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:50,275 INFO L93 Difference]: Finished difference Result 8479 states and 14863 transitions. [2019-11-24 03:26:50,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:50,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-11-24 03:26:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:50,288 INFO L225 Difference]: With dead ends: 8479 [2019-11-24 03:26:50,288 INFO L226 Difference]: Without dead ends: 4252 [2019-11-24 03:26:50,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 03:26:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-11-24 03:26:50,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4252. [2019-11-24 03:26:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4252 states. [2019-11-24 03:26:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 7452 transitions. [2019-11-24 03:26:50,498 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 7452 transitions. Word has length 88 [2019-11-24 03:26:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:50,498 INFO L462 AbstractCegarLoop]: Abstraction has 4252 states and 7452 transitions. [2019-11-24 03:26:50,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 7452 transitions. [2019-11-24 03:26:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-24 03:26:50,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:50,505 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-24 03:26:50,506 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1718260558, now seen corresponding path program 1 times [2019-11-24 03:26:50,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:50,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391017415] [2019-11-24 03:26:50,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY