/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:55:39,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:55:39,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:55:39,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 06:55:39,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:55:39,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:55:39,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:55:39,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:55:39,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:55:39,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:55:39,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:55:39,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:55:39,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:55:39,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:55:39,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:55:39,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:55:39,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:55:39,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:55:39,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:55:39,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:55:39,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:55:39,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:55:39,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:55:39,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:55:39,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:55:39,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:55:39,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:55:39,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:55:39,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:55:39,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:55:39,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:55:39,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:55:39,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:55:39,580 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:55:39,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:55:39,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:55:39,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:55:39,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:55:39,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:55:39,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:55:39,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:55:39,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:55:39,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:55:39,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:55:39,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:55:39,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:55:39,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:55:39,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:55:39,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:55:39,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:55:39,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:55:39,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:55:39,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:55:39,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:55:39,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:55:40,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:55:40,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:55:40,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:55:40,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:55:40,042 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:55:40,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2020-12-22 06:55:40,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e889e75bb/a679ec394e834e358032ca0a52bc135c/FLAG437e0253f [2020-12-22 06:55:41,000 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:55:41,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2020-12-22 06:55:41,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e889e75bb/a679ec394e834e358032ca0a52bc135c/FLAG437e0253f [2020-12-22 06:55:41,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e889e75bb/a679ec394e834e358032ca0a52bc135c [2020-12-22 06:55:41,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:55:41,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:55:41,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:41,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:55:41,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:55:41,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:41,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cbb9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41, skipping insertion in model container [2020-12-22 06:55:41,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:41,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:55:41,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:55:41,553 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c[4955,4968] [2020-12-22 06:55:41,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:41,728 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:55:41,758 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c[4955,4968] [2020-12-22 06:55:41,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:41,858 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:55:41,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41 WrapperNode [2020-12-22 06:55:41,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:41,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:41,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:55:41,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:55:41,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:41,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:41,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:41,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:55:41,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:55:41,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:55:41,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:41,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:42,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:42,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:42,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:42,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:42,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (1/1) ... [2020-12-22 06:55:42,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:55:42,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:55:42,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:55:42,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:55:42,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (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 [2020-12-22 06:55:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:55:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:55:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:55:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:55:43,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:55:43,253 INFO L299 CfgBuilder]: Removed 126 assume(true) statements. [2020-12-22 06:55:43,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:43 BoogieIcfgContainer [2020-12-22 06:55:43,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:55:43,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:55:43,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:55:43,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:55:43,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:55:41" (1/3) ... [2020-12-22 06:55:43,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f97bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:43, skipping insertion in model container [2020-12-22 06:55:43,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:41" (2/3) ... [2020-12-22 06:55:43,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f97bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:43, skipping insertion in model container [2020-12-22 06:55:43,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:43" (3/3) ... [2020-12-22 06:55:43,273 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2020-12-22 06:55:43,281 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:55:43,288 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:55:43,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:55:43,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:55:43,372 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:55:43,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:55:43,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:55:43,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:55:43,373 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:55:43,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:55:43,374 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:55:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-12-22 06:55:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 06:55:43,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:43,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:55:43,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:43,422 INFO L82 PathProgramCache]: Analyzing trace with hash -415609573, now seen corresponding path program 1 times [2020-12-22 06:55:43,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:43,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669695948] [2020-12-22 06:55:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:43,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669695948] [2020-12-22 06:55:43,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:43,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:43,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610555138] [2020-12-22 06:55:43,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:55:43,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:55:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:43,858 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 2 states. [2020-12-22 06:55:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:43,924 INFO L93 Difference]: Finished difference Result 184 states and 275 transitions. [2020-12-22 06:55:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:55:43,926 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-12-22 06:55:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:43,957 INFO L225 Difference]: With dead ends: 184 [2020-12-22 06:55:43,957 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 06:55:43,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 06:55:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-22 06:55:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 06:55:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2020-12-22 06:55:44,038 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 18 [2020-12-22 06:55:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:44,039 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2020-12-22 06:55:44,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:55:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2020-12-22 06:55:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 06:55:44,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:44,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:55:44,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:55:44,044 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:44,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1326640326, now seen corresponding path program 1 times [2020-12-22 06:55:44,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:44,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572131491] [2020-12-22 06:55:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:44,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572131491] [2020-12-22 06:55:44,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:44,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:44,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170683598] [2020-12-22 06:55:44,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:44,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:44,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:44,273 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 3 states. [2020-12-22 06:55:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:44,300 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2020-12-22 06:55:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:44,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 06:55:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:44,303 INFO L225 Difference]: With dead ends: 91 [2020-12-22 06:55:44,304 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 06:55:44,306 INFO L677 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 [2020-12-22 06:55:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 06:55:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 06:55:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 06:55:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2020-12-22 06:55:44,322 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 19 [2020-12-22 06:55:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:44,323 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2020-12-22 06:55:44,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2020-12-22 06:55:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:55:44,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:44,325 INFO L422 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] [2020-12-22 06:55:44,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:55:44,326 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:44,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1440289089, now seen corresponding path program 1 times [2020-12-22 06:55:44,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:44,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325128873] [2020-12-22 06:55:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:44,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325128873] [2020-12-22 06:55:44,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:44,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:44,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943616708] [2020-12-22 06:55:44,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:44,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:44,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:44,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:44,484 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 3 states. [2020-12-22 06:55:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:44,547 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2020-12-22 06:55:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:44,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:55:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:44,550 INFO L225 Difference]: With dead ends: 111 [2020-12-22 06:55:44,550 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:55:44,551 INFO L677 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 [2020-12-22 06:55:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:55:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-12-22 06:55:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 06:55:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2020-12-22 06:55:44,572 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 24 [2020-12-22 06:55:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:44,574 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2020-12-22 06:55:44,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2020-12-22 06:55:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:55:44,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:44,578 INFO L422 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] [2020-12-22 06:55:44,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:55:44,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1072133948, now seen corresponding path program 1 times [2020-12-22 06:55:44,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:44,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770889238] [2020-12-22 06:55:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:44,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770889238] [2020-12-22 06:55:44,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:44,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:44,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080062713] [2020-12-22 06:55:44,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:44,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:44,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:44,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:44,691 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2020-12-22 06:55:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:44,735 INFO L93 Difference]: Finished difference Result 183 states and 272 transitions. [2020-12-22 06:55:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:44,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 06:55:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:44,738 INFO L225 Difference]: With dead ends: 183 [2020-12-22 06:55:44,738 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 06:55:44,739 INFO L677 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 [2020-12-22 06:55:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 06:55:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-12-22 06:55:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 06:55:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 167 transitions. [2020-12-22 06:55:44,770 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 167 transitions. Word has length 25 [2020-12-22 06:55:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:44,771 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 167 transitions. [2020-12-22 06:55:44,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 167 transitions. [2020-12-22 06:55:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:44,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:44,773 INFO L422 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] [2020-12-22 06:55:44,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:55:44,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:44,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:44,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2003629676, now seen corresponding path program 1 times [2020-12-22 06:55:44,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:44,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832790820] [2020-12-22 06:55:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:44,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832790820] [2020-12-22 06:55:44,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:44,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:55:44,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290786899] [2020-12-22 06:55:44,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:55:44,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:44,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:55:44,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:55:44,904 INFO L87 Difference]: Start difference. First operand 115 states and 167 transitions. Second operand 5 states. [2020-12-22 06:55:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:45,182 INFO L93 Difference]: Finished difference Result 639 states and 947 transitions. [2020-12-22 06:55:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:55:45,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 06:55:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:45,193 INFO L225 Difference]: With dead ends: 639 [2020-12-22 06:55:45,193 INFO L226 Difference]: Without dead ends: 530 [2020-12-22 06:55:45,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:55:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-12-22 06:55:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 210. [2020-12-22 06:55:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-22 06:55:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 296 transitions. [2020-12-22 06:55:45,266 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 296 transitions. Word has length 27 [2020-12-22 06:55:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:45,266 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 296 transitions. [2020-12-22 06:55:45,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:55:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 296 transitions. [2020-12-22 06:55:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 06:55:45,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:45,270 INFO L422 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] [2020-12-22 06:55:45,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:55:45,271 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash 591073878, now seen corresponding path program 1 times [2020-12-22 06:55:45,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:45,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133528469] [2020-12-22 06:55:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:45,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:45,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:45,515 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:55:45,515 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:55:45,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:55:45,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:55:45 BoogieIcfgContainer [2020-12-22 06:55:45,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:55:45,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:55:45,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:55:45,683 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:55:45,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:43" (3/4) ... [2020-12-22 06:55:45,686 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:55:45,780 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec3_product44.cil.c-witness.graphml [2020-12-22 06:55:45,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:55:45,783 INFO L168 Benchmark]: Toolchain (without parser) took 4504.18 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 126.8 MB in the beginning and 142.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,784 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 124.9 MB in the beginning and 124.9 MB in the end (delta: 80.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:55:45,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.66 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 105.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.88 ms. Allocated memory is still 152.0 MB. Free memory was 105.4 MB in the beginning and 134.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,786 INFO L168 Benchmark]: Boogie Preprocessor took 80.11 ms. Allocated memory is still 152.0 MB. Free memory was 134.0 MB in the beginning and 131.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,787 INFO L168 Benchmark]: RCFGBuilder took 1201.37 ms. Allocated memory is still 152.0 MB. Free memory was 131.9 MB in the beginning and 74.8 MB in the end (delta: 57.1 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,788 INFO L168 Benchmark]: TraceAbstraction took 2423.68 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 74.2 MB in the beginning and 153.6 MB in the end (delta: -79.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,788 INFO L168 Benchmark]: Witness Printer took 98.36 ms. Allocated memory is still 191.9 MB. Free memory was 153.6 MB in the beginning and 142.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:45,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 124.9 MB in the beginning and 124.9 MB in the end (delta: 80.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 579.66 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 105.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 108.88 ms. Allocated memory is still 152.0 MB. Free memory was 105.4 MB in the beginning and 134.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.11 ms. Allocated memory is still 152.0 MB. Free memory was 134.0 MB in the beginning and 131.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1201.37 ms. Allocated memory is still 152.0 MB. Free memory was 131.9 MB in the beginning and 74.8 MB in the end (delta: 57.1 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2423.68 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 74.2 MB in the beginning and 153.6 MB in the end (delta: -79.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Witness Printer took 98.36 ms. Allocated memory is still 191.9 MB. Free memory was 153.6 MB in the beginning and 142.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L187] int waterLevel = 1; [L188] int methaneLevelCritical = 0; [L494] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L695] int pumpRunning = 0; [L696] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L889] int splverifierCounter ; [L890] int tmp ; [L891] int tmp___0 ; [L892] int tmp___1 ; [L893] int tmp___2 ; [L896] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L900] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] tmp = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L205] COND TRUE waterLevel < 2 [L206] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L916] tmp___0 = __VERIFIER_nondet_int() [L918] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L926] tmp___2 = __VERIFIER_nondet_int() [L928] COND FALSE !(\read(tmp___2)) [L934] tmp___1 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L868] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L875] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L702] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L709] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L151] int tmp ; [L152] int tmp___0 ; [L153] int tmp___1 ; [L226] int retValue_acc ; [L229] retValue_acc = methaneLevelCritical [L230] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L157] tmp = isMethaneLevelCritical() [L159] COND FALSE !(\read(tmp)) [L258] int retValue_acc ; [L261] retValue_acc = waterLevel [L262] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L163] tmp___0 = getWaterLevel() [L165] COND TRUE tmp___0 == 2 [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L167] tmp___1 = isPumpRunning() [L169] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L320] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 389 SDslu, 313 SDs, 0 SdLazy, 56 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred in iteration=5, 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, 326 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...