/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/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:05:11,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:05:11,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:05:11,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 06:05:11,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 06:05:11,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 06:05:11,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 06:05:11,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 06:05:11,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 06:05:11,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 06:05:11,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 06:05:11,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 06:05:11,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:05:11,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:05:11,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:05:11,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:05:11,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:05:11,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:05:11,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:05:11,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:05:11,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:05:11,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:05:11,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:05:11,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:05:11,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:05:11,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 06:05:11,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 06:05:11,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 06:05:11,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 06:05:11,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 06:05:11,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 06:05:11,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 06:05:11,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 06:05:11,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 06:05:11,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 06:05:11,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 06:05:11,504 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 06:05:11,538 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:05:11,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:05:11,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:05:11,539 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:05:11,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:05:11,539 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:05:11,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:05:11,540 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:05:11,542 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:05:11,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:05:11,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:05:11,542 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:05:11,543 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:05:11,543 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:05:11,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:05:11,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:05:11,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:05:11,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:05:11,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:05:11,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:05:11,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:05:11,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:05:11,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:05:11,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:05:11,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:05:11,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:05:11,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:05:11,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:05:11,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:05:11,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:05:11,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:05:11,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:05:11,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:05:11,549 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:05:11,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:05:11,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:05:11,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:05:11,551 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:05:11,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:05:11,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:05:11,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:05:11,825 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:05:11,827 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:05:11,827 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-11-24 06:05:11,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65fdd624/e5cb2b8d69d14dd7bb982781bc3e37ad/FLAG5308498d7 [2019-11-24 06:05:12,373 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:05:12,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-11-24 06:05:12,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65fdd624/e5cb2b8d69d14dd7bb982781bc3e37ad/FLAG5308498d7 [2019-11-24 06:05:12,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65fdd624/e5cb2b8d69d14dd7bb982781bc3e37ad [2019-11-24 06:05:12,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:05:12,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:05:12,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:05:12,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:05:12,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:05:12,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:05:12" (1/1) ... [2019-11-24 06:05:12,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657855ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:12, skipping insertion in model container [2019-11-24 06:05:12,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:05:12" (1/1) ... [2019-11-24 06:05:12,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:05:12,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:05:13,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:05:13,206 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:05:13,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:05:13,442 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:05:13,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13 WrapperNode [2019-11-24 06:05:13,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:05:13,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:05:13,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:05:13,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:05:13,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:05:13,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:05:13,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:05:13,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:05:13,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (1/1) ... [2019-11-24 06:05:13,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:05:13,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:05:13,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:05:13,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:05:13,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (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 06:05:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:05:13,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:05:14,217 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##104: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0; [2019-11-24 06:05:14,218 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume !(1 == ~q_free~0); [2019-11-24 06:05:14,667 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:05:14,668 INFO L284 CfgBuilder]: Removed 70 assume(true) statements. [2019-11-24 06:05:14,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:05:14 BoogieIcfgContainer [2019-11-24 06:05:14,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:05:14,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:05:14,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:05:14,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:05:14,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:05:12" (1/3) ... [2019-11-24 06:05:14,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32db557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:05:14, skipping insertion in model container [2019-11-24 06:05:14,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:13" (2/3) ... [2019-11-24 06:05:14,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32db557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:05:14, skipping insertion in model container [2019-11-24 06:05:14,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:05:14" (3/3) ... [2019-11-24 06:05:14,677 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2019-11-24 06:05:14,686 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:05:14,693 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 06:05:14,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 06:05:14,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:05:14,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:05:14,731 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:05:14,731 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:05:14,731 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:05:14,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:05:14,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:05:14,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:05:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-24 06:05:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 06:05:14,756 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:14,757 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 06:05:14,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1064706944, now seen corresponding path program 1 times [2019-11-24 06:05:14,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:14,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394861818] [2019-11-24 06:05:14,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:14,960 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 06:05:14,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394861818] [2019-11-24 06:05:14,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:14,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:05:14,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256359039] [2019-11-24 06:05:14,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:14,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:14,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:14,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:14,986 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2019-11-24 06:05:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:15,081 INFO L93 Difference]: Finished difference Result 172 states and 276 transitions. [2019-11-24 06:05:15,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:15,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 06:05:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:15,096 INFO L225 Difference]: With dead ends: 172 [2019-11-24 06:05:15,096 INFO L226 Difference]: Without dead ends: 105 [2019-11-24 06:05:15,100 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 06:05:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-24 06:05:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-11-24 06:05:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-24 06:05:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 151 transitions. [2019-11-24 06:05:15,144 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 151 transitions. Word has length 17 [2019-11-24 06:05:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:15,144 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 151 transitions. [2019-11-24 06:05:15,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 151 transitions. [2019-11-24 06:05:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 06:05:15,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:15,146 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:05:15,146 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:15,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1823238613, now seen corresponding path program 1 times [2019-11-24 06:05:15,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:15,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854486999] [2019-11-24 06:05:15,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:15,197 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 06:05:15,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854486999] [2019-11-24 06:05:15,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:15,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:05:15,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96611130] [2019-11-24 06:05:15,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:15,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:15,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:15,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:15,201 INFO L87 Difference]: Start difference. First operand 100 states and 151 transitions. Second operand 3 states. [2019-11-24 06:05:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:15,277 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-24 06:05:15,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:15,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-24 06:05:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:15,281 INFO L225 Difference]: With dead ends: 265 [2019-11-24 06:05:15,281 INFO L226 Difference]: Without dead ends: 171 [2019-11-24 06:05:15,283 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 06:05:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-11-24 06:05:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2019-11-24 06:05:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-11-24 06:05:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 243 transitions. [2019-11-24 06:05:15,314 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 243 transitions. Word has length 18 [2019-11-24 06:05:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:15,315 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 243 transitions. [2019-11-24 06:05:15,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 243 transitions. [2019-11-24 06:05:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-24 06:05:15,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:15,317 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:05:15,318 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:15,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1219179237, now seen corresponding path program 1 times [2019-11-24 06:05:15,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:15,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104429394] [2019-11-24 06:05:15,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:15,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104429394] [2019-11-24 06:05:15,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:15,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 06:05:15,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589253590] [2019-11-24 06:05:15,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 06:05:15,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:15,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 06:05:15,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:05:15,397 INFO L87 Difference]: Start difference. First operand 169 states and 243 transitions. Second operand 4 states. [2019-11-24 06:05:15,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:15,461 INFO L93 Difference]: Finished difference Result 454 states and 669 transitions. [2019-11-24 06:05:15,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 06:05:15,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-24 06:05:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:15,464 INFO L225 Difference]: With dead ends: 454 [2019-11-24 06:05:15,465 INFO L226 Difference]: Without dead ends: 294 [2019-11-24 06:05:15,466 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:05:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-11-24 06:05:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 207. [2019-11-24 06:05:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-11-24 06:05:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 303 transitions. [2019-11-24 06:05:15,502 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 303 transitions. Word has length 26 [2019-11-24 06:05:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:15,503 INFO L462 AbstractCegarLoop]: Abstraction has 207 states and 303 transitions. [2019-11-24 06:05:15,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 06:05:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 303 transitions. [2019-11-24 06:05:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-24 06:05:15,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:15,507 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 06:05:15,507 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash 474029277, now seen corresponding path program 1 times [2019-11-24 06:05:15,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:15,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394988761] [2019-11-24 06:05:15,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 06:05:15,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394988761] [2019-11-24 06:05:15,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:15,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:05:15,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188910921] [2019-11-24 06:05:15,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:15,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:15,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:15,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:15,611 INFO L87 Difference]: Start difference. First operand 207 states and 303 transitions. Second operand 3 states. [2019-11-24 06:05:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:15,644 INFO L93 Difference]: Finished difference Result 473 states and 707 transitions. [2019-11-24 06:05:15,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:15,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-24 06:05:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:15,647 INFO L225 Difference]: With dead ends: 473 [2019-11-24 06:05:15,647 INFO L226 Difference]: Without dead ends: 365 [2019-11-24 06:05:15,648 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 06:05:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2019-11-24 06:05:15,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 361. [2019-11-24 06:05:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2019-11-24 06:05:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 537 transitions. [2019-11-24 06:05:15,671 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 537 transitions. Word has length 40 [2019-11-24 06:05:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:15,672 INFO L462 AbstractCegarLoop]: Abstraction has 361 states and 537 transitions. [2019-11-24 06:05:15,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 537 transitions. [2019-11-24 06:05:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-24 06:05:15,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:15,674 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 06:05:15,675 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1551335858, now seen corresponding path program 1 times [2019-11-24 06:05:15,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:15,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89427536] [2019-11-24 06:05:15,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:15,747 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 06:05:15,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89427536] [2019-11-24 06:05:15,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:15,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:05:15,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848612251] [2019-11-24 06:05:15,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:15,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:15,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:15,750 INFO L87 Difference]: Start difference. First operand 361 states and 537 transitions. Second operand 3 states. [2019-11-24 06:05:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:15,804 INFO L93 Difference]: Finished difference Result 537 states and 805 transitions. [2019-11-24 06:05:15,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:15,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-24 06:05:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:15,805 INFO L225 Difference]: With dead ends: 537 [2019-11-24 06:05:15,805 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 06:05:15,807 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 06:05:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 06:05:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 06:05:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 06:05:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 06:05:15,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-11-24 06:05:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:15,809 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 06:05:15,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 06:05:15,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 06:05:15,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 06:05:16,042 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-24 06:05:16,042 INFO L440 ceAbstractionStarter]: At program point L500(lines 500 509) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,043 INFO L440 ceAbstractionStarter]: At program point L500-1(lines 500 509) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,043 INFO L444 ceAbstractionStarter]: For program point L139(lines 139 151) no Hoare annotation was computed. [2019-11-24 06:05:16,043 INFO L440 ceAbstractionStarter]: At program point L106(lines 84 108) the Hoare annotation is: (and (<= ~p_dw_pc~0 0) (<= ~c_dr_pc~0 0) (<= 2 ~slow_clk_edge~0)) [2019-11-24 06:05:16,043 INFO L440 ceAbstractionStarter]: At program point L106-1(lines 84 108) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,043 INFO L440 ceAbstractionStarter]: At program point L106-2(lines 84 108) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,043 INFO L444 ceAbstractionStarter]: For program point L405(lines 405 409) no Hoare annotation was computed. [2019-11-24 06:05:16,044 INFO L444 ceAbstractionStarter]: For program point L405-1(lines 400 440) no Hoare annotation was computed. [2019-11-24 06:05:16,044 INFO L444 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2019-11-24 06:05:16,044 INFO L444 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-24 06:05:16,044 INFO L444 ceAbstractionStarter]: For program point L142(lines 142 150) no Hoare annotation was computed. [2019-11-24 06:05:16,044 INFO L440 ceAbstractionStarter]: At program point L10-1(lines 188 242) the Hoare annotation is: (not (= ~c_dr_st~0 0)) [2019-11-24 06:05:16,044 INFO L440 ceAbstractionStarter]: At program point L143(lines 138 182) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,045 INFO L440 ceAbstractionStarter]: At program point L77(lines 55 79) the Hoare annotation is: (and (<= ~p_dw_pc~0 0) (<= ~c_dr_pc~0 0) (<= 2 ~slow_clk_edge~0)) [2019-11-24 06:05:16,045 INFO L440 ceAbstractionStarter]: At program point L77-1(lines 55 79) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,045 INFO L440 ceAbstractionStarter]: At program point L77-2(lines 55 79) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,045 INFO L440 ceAbstractionStarter]: At program point L441(lines 394 446) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,045 INFO L444 ceAbstractionStarter]: For program point L145(lines 145 149) no Hoare annotation was computed. [2019-11-24 06:05:16,046 INFO L440 ceAbstractionStarter]: At program point L410(lines 400 440) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,046 INFO L444 ceAbstractionStarter]: For program point L513(lines 513 517) no Hoare annotation was computed. [2019-11-24 06:05:16,046 INFO L444 ceAbstractionStarter]: For program point L414(lines 414 421) no Hoare annotation was computed. [2019-11-24 06:05:16,046 INFO L440 ceAbstractionStarter]: At program point L481-1(lines 315 518) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,046 INFO L444 ceAbstractionStarter]: For program point L85(lines 85 94) no Hoare annotation was computed. [2019-11-24 06:05:16,046 INFO L444 ceAbstractionStarter]: For program point L85-2(lines 84 108) no Hoare annotation was computed. [2019-11-24 06:05:16,046 INFO L444 ceAbstractionStarter]: For program point L85-3(lines 85 94) no Hoare annotation was computed. [2019-11-24 06:05:16,047 INFO L444 ceAbstractionStarter]: For program point L85-5(lines 84 108) no Hoare annotation was computed. [2019-11-24 06:05:16,047 INFO L444 ceAbstractionStarter]: For program point L85-6(lines 85 94) no Hoare annotation was computed. [2019-11-24 06:05:16,047 INFO L444 ceAbstractionStarter]: For program point L85-8(lines 84 108) no Hoare annotation was computed. [2019-11-24 06:05:16,047 INFO L447 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-24 06:05:16,047 INFO L444 ceAbstractionStarter]: For program point L86(lines 86 91) no Hoare annotation was computed. [2019-11-24 06:05:16,047 INFO L444 ceAbstractionStarter]: For program point L86-1(lines 86 91) no Hoare annotation was computed. [2019-11-24 06:05:16,047 INFO L444 ceAbstractionStarter]: For program point L86-2(lines 86 91) no Hoare annotation was computed. [2019-11-24 06:05:16,048 INFO L440 ceAbstractionStarter]: At program point L154-1(lines 138 182) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,048 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 65) no Hoare annotation was computed. [2019-11-24 06:05:16,048 INFO L444 ceAbstractionStarter]: For program point L56-2(lines 55 79) no Hoare annotation was computed. [2019-11-24 06:05:16,048 INFO L444 ceAbstractionStarter]: For program point L56-3(lines 56 65) no Hoare annotation was computed. [2019-11-24 06:05:16,048 INFO L444 ceAbstractionStarter]: For program point L56-5(lines 55 79) no Hoare annotation was computed. [2019-11-24 06:05:16,048 INFO L444 ceAbstractionStarter]: For program point L56-6(lines 56 65) no Hoare annotation was computed. [2019-11-24 06:05:16,049 INFO L444 ceAbstractionStarter]: For program point L56-8(lines 55 79) no Hoare annotation was computed. [2019-11-24 06:05:16,049 INFO L447 ceAbstractionStarter]: At program point L519(lines 466 524) the Hoare annotation is: true [2019-11-24 06:05:16,049 INFO L444 ceAbstractionStarter]: For program point L189(lines 189 197) no Hoare annotation was computed. [2019-11-24 06:05:16,049 INFO L444 ceAbstractionStarter]: For program point L57(lines 57 62) no Hoare annotation was computed. [2019-11-24 06:05:16,049 INFO L444 ceAbstractionStarter]: For program point L57-1(lines 57 62) no Hoare annotation was computed. [2019-11-24 06:05:16,049 INFO L444 ceAbstractionStarter]: For program point L57-2(lines 57 62) no Hoare annotation was computed. [2019-11-24 06:05:16,049 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 06:05:16,050 INFO L444 ceAbstractionStarter]: For program point L224(lines 224 236) no Hoare annotation was computed. [2019-11-24 06:05:16,050 INFO L444 ceAbstractionStarter]: For program point L225(lines 225 231) no Hoare annotation was computed. [2019-11-24 06:05:16,050 INFO L440 ceAbstractionStarter]: At program point L192(lines 192 196) the Hoare annotation is: (let ((.cse0 (not (= ~c_dr_st~0 0)))) (or (and .cse0 (<= ~c_dr_pc~0 0)) (and (= ~c_dr_pc~0 1) .cse0))) [2019-11-24 06:05:16,050 INFO L440 ceAbstractionStarter]: At program point L425(lines 400 440) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,050 INFO L440 ceAbstractionStarter]: At program point L161(lines 138 182) the Hoare annotation is: (or (= ~c_dr_pc~0 1) (<= ~c_dr_pc~0 0)) [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L95-1(lines 95 104) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L95-3(lines 95 104) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L95-5(lines 95 104) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L96(lines 96 101) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L96-1(lines 96 101) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-24 06:05:16,051 INFO L444 ceAbstractionStarter]: For program point L429(lines 429 436) no Hoare annotation was computed. [2019-11-24 06:05:16,052 INFO L444 ceAbstractionStarter]: For program point L66-1(lines 66 75) no Hoare annotation was computed. [2019-11-24 06:05:16,052 INFO L444 ceAbstractionStarter]: For program point L66-3(lines 66 75) no Hoare annotation was computed. [2019-11-24 06:05:16,052 INFO L444 ceAbstractionStarter]: For program point L66-5(lines 66 75) no Hoare annotation was computed. [2019-11-24 06:05:16,052 INFO L444 ceAbstractionStarter]: For program point L67(lines 67 72) no Hoare annotation was computed. [2019-11-24 06:05:16,052 INFO L444 ceAbstractionStarter]: For program point L67-1(lines 67 72) no Hoare annotation was computed. [2019-11-24 06:05:16,052 INFO L444 ceAbstractionStarter]: For program point L67-2(lines 67 72) no Hoare annotation was computed. [2019-11-24 06:05:16,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 06:05:16 BoogieIcfgContainer [2019-11-24 06:05:16,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 06:05:16,098 INFO L168 Benchmark]: Toolchain (without parser) took 3310.76 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 105.0 MB in the beginning and 202.2 MB in the end (delta: -97.2 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,099 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.87 ms. Allocated memory was 146.8 MB in the beginning and 206.0 MB in the end (delta: 59.2 MB). Free memory was 104.8 MB in the beginning and 182.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 206.0 MB. Free memory was 182.8 MB in the beginning and 180.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,103 INFO L168 Benchmark]: Boogie Preprocessor took 36.62 ms. Allocated memory is still 206.0 MB. Free memory was 180.1 MB in the beginning and 177.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,104 INFO L168 Benchmark]: RCFGBuilder took 1128.83 ms. Allocated memory was 206.0 MB in the beginning and 232.8 MB in the end (delta: 26.7 MB). Free memory was 177.5 MB in the beginning and 195.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,107 INFO L168 Benchmark]: TraceAbstraction took 1423.83 ms. Allocated memory was 232.8 MB in the beginning and 244.8 MB in the end (delta: 12.1 MB). Free memory was 195.7 MB in the beginning and 202.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 109.7 MB. Max. memory is 7.1 GB. [2019-11-24 06:05:16,114 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.87 ms. Allocated memory was 146.8 MB in the beginning and 206.0 MB in the end (delta: 59.2 MB). Free memory was 104.8 MB in the beginning and 182.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 206.0 MB. Free memory was 182.8 MB in the beginning and 180.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.62 ms. Allocated memory is still 206.0 MB. Free memory was 180.1 MB in the beginning and 177.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1128.83 ms. Allocated memory was 206.0 MB in the beginning and 232.8 MB in the end (delta: 26.7 MB). Free memory was 177.5 MB in the beginning and 195.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1423.83 ms. Allocated memory was 232.8 MB in the beginning and 244.8 MB in the end (delta: 12.1 MB). Free memory was 195.7 MB in the beginning and 202.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 109.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 315]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: !(c_dr_st == 0) - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 500]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: (p_dw_pc <= 0 && c_dr_pc <= 0) && 2 <= slow_clk_edge - InvariantResult [Line: 400]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 192]: Loop Invariant Derived loop invariant: (!(c_dr_st == 0) && c_dr_pc <= 0) || (c_dr_pc == 1 && !(c_dr_st == 0)) - InvariantResult [Line: 500]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 466]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: (p_dw_pc <= 0 && c_dr_pc <= 0) && 2 <= slow_clk_edge - InvariantResult [Line: 400]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: c_dr_pc == 1 || c_dr_pc <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 2 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 508 SDtfs, 316 SDslu, 427 SDs, 0 SdLazy, 98 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=361occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 98 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 19 PreInvPairs, 151 NumberOfFragments, 134 HoareAnnotationTreeSize, 19 FomulaSimplifications, 1215 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 19 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 7358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...