/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--accel--kxcjk-1013.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:25:19,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:25:19,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:25:19,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:25:19,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:25:19,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:25:19,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:25:19,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:25:19,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:25:19,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:25:19,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:25:19,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:25:19,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:25:19,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:25:19,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:25:19,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:25:19,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:25:19,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:25:19,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:25:19,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:25:19,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:25:19,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:25:19,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:25:19,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:25:19,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 03:25:19,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:25:19,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:25:19,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:25:19,440 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 03:25:19,458 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:25:19,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:25:19,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:25:19,459 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:25:19,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:25:19,459 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:25:19,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:25:19,460 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:25:19,460 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:25:19,460 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:25:19,460 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:25:19,461 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:25:19,461 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:25:19,461 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:25:19,461 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:25:19,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:25:19,462 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:25:19,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:25:19,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:25:19,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:25:19,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:25:19,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:25:19,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:25:19,463 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:25:19,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:25:19,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:25:19,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:25:19,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:25:19,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:25:19,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:25:19,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:25:19,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:25:19,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:25:19,466 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:25:19,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:25:19,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:25:19,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:25:19,466 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:25:19,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:25:19,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:25:19,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:25:19,797 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:25:19,798 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:25:19,799 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2019-11-24 03:25:19,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c840317cf/a9ad15de7ca84c9b94e826b0196002a2/FLAGad924cc40 [2019-11-24 03:25:20,608 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:25:20,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2019-11-24 03:25:20,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c840317cf/a9ad15de7ca84c9b94e826b0196002a2/FLAGad924cc40 [2019-11-24 03:25:20,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c840317cf/a9ad15de7ca84c9b94e826b0196002a2 [2019-11-24 03:25:20,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:25:20,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:25:20,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:25:20,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:25:20,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:25:20,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:25:20" (1/1) ... [2019-11-24 03:25:20,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e855fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:20, skipping insertion in model container [2019-11-24 03:25:20,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:25:20" (1/1) ... [2019-11-24 03:25:20,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:25:20,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:25:22,918 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2019-11-24 03:25:22,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:25:23,026 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:25:23,338 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2019-11-24 03:25:23,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:25:23,741 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:25:23,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23 WrapperNode [2019-11-24 03:25:23,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:25:23,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:25:23,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:25:23,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:25:23,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:23,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:25:24,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:25:24,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:25:24,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:25:24,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (1/1) ... [2019-11-24 03:25:24,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:25:24,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:25:24,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:25:24,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:25:24,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (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 03:25:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2019-11-24 03:25:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:25:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:25:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2019-11-24 03:25:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:25:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:25:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 03:25:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 03:25:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:25:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:25:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 03:25:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:25:24,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:26:16,034 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:26:16,035 INFO L284 CfgBuilder]: Removed 1786 assume(true) statements. [2019-11-24 03:26:16,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:26:16 BoogieIcfgContainer [2019-11-24 03:26:16,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:26:16,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:26:16,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:26:16,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:26:16,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:25:20" (1/3) ... [2019-11-24 03:26:16,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439c6041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:26:16, skipping insertion in model container [2019-11-24 03:26:16,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:25:23" (2/3) ... [2019-11-24 03:26:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439c6041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:26:16, skipping insertion in model container [2019-11-24 03:26:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:26:16" (3/3) ... [2019-11-24 03:26:16,045 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2019-11-24 03:26:16,055 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:26:16,068 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 03:26:16,080 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 03:26:16,128 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:26:16,128 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:26:16,128 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:26:16,128 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:26:16,128 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:26:16,128 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:26:16,129 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:26:16,129 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:26:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states. [2019-11-24 03:26:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-24 03:26:16,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:16,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:26:16,191 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash 89931991, now seen corresponding path program 1 times [2019-11-24 03:26:16,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:16,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225518697] [2019-11-24 03:26:16,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:17,158 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 03:26:17,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225518697] [2019-11-24 03:26:17,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:17,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:26:17,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431569669] [2019-11-24 03:26:17,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:17,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:17,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:17,184 INFO L87 Difference]: Start difference. First operand 595 states. Second operand 3 states. [2019-11-24 03:26:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:19,613 INFO L93 Difference]: Finished difference Result 1714 states and 2925 transitions. [2019-11-24 03:26:19,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:19,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-24 03:26:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:19,646 INFO L225 Difference]: With dead ends: 1714 [2019-11-24 03:26:19,646 INFO L226 Difference]: Without dead ends: 1109 [2019-11-24 03:26:19,657 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 03:26:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2019-11-24 03:26:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2019-11-24 03:26:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-11-24 03:26:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1882 transitions. [2019-11-24 03:26:19,784 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1882 transitions. Word has length 46 [2019-11-24 03:26:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:19,785 INFO L462 AbstractCegarLoop]: Abstraction has 1109 states and 1882 transitions. [2019-11-24 03:26:19,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1882 transitions. [2019-11-24 03:26:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-24 03:26:19,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:19,788 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:26:19,789 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash 258909730, now seen corresponding path program 1 times [2019-11-24 03:26:19,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:19,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88853497] [2019-11-24 03:26:19,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:20,236 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 03:26:20,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88853497] [2019-11-24 03:26:20,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:20,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:26:20,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845240791] [2019-11-24 03:26:20,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:20,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:20,241 INFO L87 Difference]: Start difference. First operand 1109 states and 1882 transitions. Second operand 3 states. [2019-11-24 03:26:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:20,353 INFO L93 Difference]: Finished difference Result 2184 states and 3697 transitions. [2019-11-24 03:26:20,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:20,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-11-24 03:26:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:20,367 INFO L225 Difference]: With dead ends: 2184 [2019-11-24 03:26:20,368 INFO L226 Difference]: Without dead ends: 2181 [2019-11-24 03:26:20,369 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 03:26:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2019-11-24 03:26:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2019-11-24 03:26:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2181 states. [2019-11-24 03:26:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3692 transitions. [2019-11-24 03:26:20,447 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3692 transitions. Word has length 49 [2019-11-24 03:26:20,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:20,448 INFO L462 AbstractCegarLoop]: Abstraction has 2181 states and 3692 transitions. [2019-11-24 03:26:20,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3692 transitions. [2019-11-24 03:26:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-24 03:26:20,455 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:20,456 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:26:20,456 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:20,457 INFO L82 PathProgramCache]: Analyzing trace with hash -171922679, now seen corresponding path program 1 times [2019-11-24 03:26:20,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:20,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122982333] [2019-11-24 03:26:20,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:26:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:26:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:26:20,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122982333] [2019-11-24 03:26:20,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:26:20,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:26:20,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924483860] [2019-11-24 03:26:20,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:26:20,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:26:20,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:26:20,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:26:20,922 INFO L87 Difference]: Start difference. First operand 2181 states and 3692 transitions. Second operand 3 states. [2019-11-24 03:26:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:26:21,243 INFO L93 Difference]: Finished difference Result 6359 states and 10747 transitions. [2019-11-24 03:26:21,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:26:21,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-11-24 03:26:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:26:21,266 INFO L225 Difference]: With dead ends: 6359 [2019-11-24 03:26:21,266 INFO L226 Difference]: Without dead ends: 4208 [2019-11-24 03:26:21,270 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 03:26:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2019-11-24 03:26:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 4205. [2019-11-24 03:26:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4205 states. [2019-11-24 03:26:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 7108 transitions. [2019-11-24 03:26:21,465 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 7108 transitions. Word has length 76 [2019-11-24 03:26:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:26:21,468 INFO L462 AbstractCegarLoop]: Abstraction has 4205 states and 7108 transitions. [2019-11-24 03:26:21,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:26:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 7108 transitions. [2019-11-24 03:26:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-24 03:26:21,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:26:21,734 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2019-11-24 03:26:21,740 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:26:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:26:21,743 INFO L82 PathProgramCache]: Analyzing trace with hash -234794625, now seen corresponding path program 1 times [2019-11-24 03:26:21,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:26:21,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154364956] [2019-11-24 03:26:21,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY