/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:55:41,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:55:41,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:55:41,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:55:41,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:55:41,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:55:41,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:55:41,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:55:41,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:55:41,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:55:41,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:55:41,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:55:41,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:55:41,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:55:41,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:55:41,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:55:41,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:55:41,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:55:41,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:55:41,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:55:41,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:55:41,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:55:41,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:55:41,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:55:41,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:55:41,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:55:41,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:55:41,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:55:41,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:55:41,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:55:41,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:55:41,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:55:41,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:55:41,787 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:55:41,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:55:41,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:55:41,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:55:41,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:55:41,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:55:41,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:55:41,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:55:41,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:55:41,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:55:41,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:55:41,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:55:41,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:55:41,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:55:41,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:55:41,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:55:41,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:55:41,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:55:41,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:55:41,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:55:41,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:55:41,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:55:42,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:55:42,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:55:42,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:55:42,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:55:42,253 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:55:42,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2020-12-22 06:55:42,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bdb0b33/61701da4bd2344bf9b8b2e3126b38666/FLAG29e2e5866 [2020-12-22 06:55:42,987 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:55:42,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2020-12-22 06:55:43,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bdb0b33/61701da4bd2344bf9b8b2e3126b38666/FLAG29e2e5866 [2020-12-22 06:55:43,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bdb0b33/61701da4bd2344bf9b8b2e3126b38666 [2020-12-22 06:55:43,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:55:43,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:55:43,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:43,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:55:43,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:55:43,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:43,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acc5f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43, skipping insertion in model container [2020-12-22 06:55:43,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:43,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:55:43,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:55:43,625 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_product47.cil.c[1281,1294] [2020-12-22 06:55:43,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:43,856 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:55:43,873 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_product47.cil.c[1281,1294] [2020-12-22 06:55:43,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:43,986 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:55:43,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43 WrapperNode [2020-12-22 06:55:43,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:43,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:43,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:55:43,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:55:43,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:44,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:55:44,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:55:44,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:55:44,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (1/1) ... [2020-12-22 06:55:44,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:55:44,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:55:44,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:55:44,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:55:44,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (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 06:55:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:55:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:55:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:55:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:55:45,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:55:45,366 INFO L299 CfgBuilder]: Removed 202 assume(true) statements. [2020-12-22 06:55:45,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:45 BoogieIcfgContainer [2020-12-22 06:55:45,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:55:45,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:55:45,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:55:45,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:55:45,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:55:43" (1/3) ... [2020-12-22 06:55:45,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b96eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:45, skipping insertion in model container [2020-12-22 06:55:45,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:43" (2/3) ... [2020-12-22 06:55:45,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b96eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:45, skipping insertion in model container [2020-12-22 06:55:45,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:45" (3/3) ... [2020-12-22 06:55:45,378 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-12-22 06:55:45,385 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:55:45,391 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:55:45,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:55:45,439 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:55:45,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:55:45,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:55:45,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:55:45,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:55:45,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:55:45,440 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:55:45,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:55:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2020-12-22 06:55:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 06:55:45,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:45,467 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 06:55:45,468 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 301971860, now seen corresponding path program 1 times [2020-12-22 06:55:45,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:45,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902120095] [2020-12-22 06:55:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:45,809 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 06:55:45,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902120095] [2020-12-22 06:55:45,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:45,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:45,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918884181] [2020-12-22 06:55:45,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:55:45,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:45,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:55:45,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:45,836 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 2 states. [2020-12-22 06:55:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:45,876 INFO L93 Difference]: Finished difference Result 268 states and 401 transitions. [2020-12-22 06:55:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:55:45,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-12-22 06:55:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:45,891 INFO L225 Difference]: With dead ends: 268 [2020-12-22 06:55:45,891 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 06:55:45,895 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 06:55:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 06:55:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-12-22 06:55:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-22 06:55:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 192 transitions. [2020-12-22 06:55:45,953 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 192 transitions. Word has length 18 [2020-12-22 06:55:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:45,953 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 192 transitions. [2020-12-22 06:55:45,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:55:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 192 transitions. [2020-12-22 06:55:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 06:55:45,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:45,955 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 06:55:45,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:55:45,956 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash -609058893, now seen corresponding path program 1 times [2020-12-22 06:55:45,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:45,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448161102] [2020-12-22 06:55:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:46,089 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 06:55:46,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448161102] [2020-12-22 06:55:46,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:46,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:46,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932978409] [2020-12-22 06:55:46,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:46,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:46,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:46,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:46,094 INFO L87 Difference]: Start difference. First operand 133 states and 192 transitions. Second operand 3 states. [2020-12-22 06:55:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:46,110 INFO L93 Difference]: Finished difference Result 133 states and 192 transitions. [2020-12-22 06:55:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:46,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 06:55:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:46,112 INFO L225 Difference]: With dead ends: 133 [2020-12-22 06:55:46,112 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 06:55:46,114 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 06:55:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 06:55:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-22 06:55:46,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 06:55:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 79 transitions. [2020-12-22 06:55:46,121 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 79 transitions. Word has length 19 [2020-12-22 06:55:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:46,121 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 79 transitions. [2020-12-22 06:55:46,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 79 transitions. [2020-12-22 06:55:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:55:46,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:46,123 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 06:55:46,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:55:46,123 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1636802596, now seen corresponding path program 1 times [2020-12-22 06:55:46,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:46,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719266288] [2020-12-22 06:55:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:46,239 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 06:55:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719266288] [2020-12-22 06:55:46,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:46,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:46,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112083605] [2020-12-22 06:55:46,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:46,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:46,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:46,243 INFO L87 Difference]: Start difference. First operand 55 states and 79 transitions. Second operand 3 states. [2020-12-22 06:55:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:46,291 INFO L93 Difference]: Finished difference Result 153 states and 225 transitions. [2020-12-22 06:55:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:46,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:55:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:46,295 INFO L225 Difference]: With dead ends: 153 [2020-12-22 06:55:46,295 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 06:55:46,296 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 06:55:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 06:55:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-12-22 06:55:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 06:55:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 147 transitions. [2020-12-22 06:55:46,318 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 147 transitions. Word has length 24 [2020-12-22 06:55:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:46,318 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 147 transitions. [2020-12-22 06:55:46,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 147 transitions. [2020-12-22 06:55:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:55:46,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:46,320 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] [2020-12-22 06:55:46,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:55:46,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1444892134, now seen corresponding path program 1 times [2020-12-22 06:55:46,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:46,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882219707] [2020-12-22 06:55:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:46,384 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 06:55:46,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882219707] [2020-12-22 06:55:46,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:46,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:46,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8899134] [2020-12-22 06:55:46,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:46,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:46,387 INFO L87 Difference]: Start difference. First operand 100 states and 147 transitions. Second operand 3 states. [2020-12-22 06:55:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:46,431 INFO L93 Difference]: Finished difference Result 239 states and 356 transitions. [2020-12-22 06:55:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:46,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 06:55:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:46,433 INFO L225 Difference]: With dead ends: 239 [2020-12-22 06:55:46,433 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 06:55:46,434 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 06:55:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 06:55:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-12-22 06:55:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 06:55:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 207 transitions. [2020-12-22 06:55:46,457 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 207 transitions. Word has length 26 [2020-12-22 06:55:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:46,457 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 207 transitions. [2020-12-22 06:55:46,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 207 transitions. [2020-12-22 06:55:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:46,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:46,459 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 06:55:46,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:55:46,460 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:46,460 INFO L82 PathProgramCache]: Analyzing trace with hash 266687089, now seen corresponding path program 1 times [2020-12-22 06:55:46,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:46,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265164072] [2020-12-22 06:55:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:46,558 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 06:55:46,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265164072] [2020-12-22 06:55:46,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:46,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:55:46,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163312540] [2020-12-22 06:55:46,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:55:46,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:46,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:55:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:55:46,562 INFO L87 Difference]: Start difference. First operand 143 states and 207 transitions. Second operand 5 states. [2020-12-22 06:55:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:46,736 INFO L93 Difference]: Finished difference Result 757 states and 1113 transitions. [2020-12-22 06:55:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:55:46,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 06:55:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:46,741 INFO L225 Difference]: With dead ends: 757 [2020-12-22 06:55:46,741 INFO L226 Difference]: Without dead ends: 620 [2020-12-22 06:55:46,743 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 06:55:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-12-22 06:55:46,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 240. [2020-12-22 06:55:46,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-22 06:55:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 338 transitions. [2020-12-22 06:55:46,790 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 338 transitions. Word has length 27 [2020-12-22 06:55:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:46,791 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 338 transitions. [2020-12-22 06:55:46,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:55:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 338 transitions. [2020-12-22 06:55:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 06:55:46,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:46,793 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 06:55:46,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:55:46,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:46,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1433576653, now seen corresponding path program 1 times [2020-12-22 06:55:46,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:46,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896547796] [2020-12-22 06:55:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:46,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:47,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:47,095 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:55:47,095 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:55:47,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:55:47,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:55:47 BoogieIcfgContainer [2020-12-22 06:55:47,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:55:47,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:55:47,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:55:47,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:55:47,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:45" (3/4) ... [2020-12-22 06:55:47,221 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:55:47,350 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec3_product47.cil.c-witness.graphml [2020-12-22 06:55:47,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:55:47,352 INFO L168 Benchmark]: Toolchain (without parser) took 4056.66 ms. Allocated memory is still 168.8 MB. Free memory was 144.3 MB in the beginning and 83.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,353 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 145.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:55:47,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.53 ms. Allocated memory is still 168.8 MB. Free memory was 143.8 MB in the beginning and 122.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.08 ms. Allocated memory is still 168.8 MB. Free memory was 122.9 MB in the beginning and 118.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,357 INFO L168 Benchmark]: Boogie Preprocessor took 96.67 ms. Allocated memory is still 168.8 MB. Free memory was 118.7 MB in the beginning and 115.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,358 INFO L168 Benchmark]: RCFGBuilder took 1141.29 ms. Allocated memory is still 168.8 MB. Free memory was 115.5 MB in the beginning and 136.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 63.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,361 INFO L168 Benchmark]: TraceAbstraction took 1845.81 ms. Allocated memory is still 168.8 MB. Free memory was 136.3 MB in the beginning and 95.2 MB in the end (delta: 41.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,361 INFO L168 Benchmark]: Witness Printer took 133.04 ms. Allocated memory is still 168.8 MB. Free memory was 95.2 MB in the beginning and 83.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:47,366 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 168.8 MB. Free memory is still 145.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 689.53 ms. Allocated memory is still 168.8 MB. Free memory was 143.8 MB in the beginning and 122.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 138.08 ms. Allocated memory is still 168.8 MB. Free memory was 122.9 MB in the beginning and 118.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 96.67 ms. Allocated memory is still 168.8 MB. Free memory was 118.7 MB in the beginning and 115.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1141.29 ms. Allocated memory is still 168.8 MB. Free memory was 115.5 MB in the beginning and 136.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 63.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1845.81 ms. Allocated memory is still 168.8 MB. Free memory was 136.3 MB in the beginning and 95.2 MB in the end (delta: 41.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. * Witness Printer took 133.04 ms. Allocated memory is still 168.8 MB. Free memory was 95.2 MB in the beginning and 83.7 MB in the end (delta: 11.5 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: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int pumpRunning = 0; [L632] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L132] int retValue_acc ; [L133] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L181] int retValue_acc ; [L184] retValue_acc = 1 [L185] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L567] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L569] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___2)) [L601] tmp___1 = __VERIFIER_nondet_int() [L603] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L830] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L837] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L639] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L646] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L938] int tmp ; [L939] int tmp___0 ; [L940] int tmp___1 ; [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L950] tmp___0 = getWaterLevel() [L952] COND TRUE tmp___0 == 2 [L763] int retValue_acc ; [L766] retValue_acc = pumpRunning [L767] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L954] tmp___1 = isPumpRunning() [L956] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L46] 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, 137 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 559 SDtfs, 497 SDslu, 431 SDs, 0 SdLazy, 63 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred 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, 386 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 5251 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...