/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:55:33,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:55:33,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:55:33,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:55:33,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:55:33,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:55:33,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:55:33,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:55:33,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:55:33,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:55:33,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:55:33,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:55:33,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:55:33,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:55:33,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:55:33,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:55:33,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:55:33,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:55:33,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:55:33,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:55:33,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:55:33,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:55:33,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:55:33,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:55:33,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:55:33,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:55:33,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:55:33,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:55:33,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:55:33,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:55:33,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:55:33,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:55:33,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:55:33,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:55:33,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:55:33,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:55:33,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:55:33,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:55:33,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:55:33,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:55:33,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:55:33,562 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:55:33,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:55:33,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:55:33,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:55:33,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:55:33,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:55:33,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:55:33,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:55:33,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:55:33,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:55:33,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:55:33,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:55:33,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:55:33,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:55:33,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:55:33,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:55:33,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:55:33,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:55:33,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:55:33,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:55:33,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:55:33,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:55:34,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:55:34,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:55:34,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:55:34,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:55:34,126 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:55:34,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c [2020-12-22 06:55:34,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca5de9f7/e4d913f2a9ad4492b541b3ff8ede26e3/FLAG8ddfc937d [2020-12-22 06:55:34,852 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:55:34,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product35.cil.c [2020-12-22 06:55:34,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca5de9f7/e4d913f2a9ad4492b541b3ff8ede26e3/FLAG8ddfc937d [2020-12-22 06:55:35,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca5de9f7/e4d913f2a9ad4492b541b3ff8ede26e3 [2020-12-22 06:55:35,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:55:35,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:55:35,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:35,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:55:35,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:55:35,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:35,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d262fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35, skipping insertion in model container [2020-12-22 06:55:35,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:35,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:55:35,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:55:35,509 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_product35.cil.c[7938,7951] [2020-12-22 06:55:35,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:35,598 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:55:35,666 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_product35.cil.c[7938,7951] [2020-12-22 06:55:35,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:35,838 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:55:35,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35 WrapperNode [2020-12-22 06:55:35,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:35,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:35,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:55:35,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:55:35,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:35,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:35,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:35,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:55:35,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:55:35,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:55:35,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:35,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:36,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:36,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:36,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:36,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:36,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (1/1) ... [2020-12-22 06:55:36,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:55:36,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:55:36,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:55:36,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:55:36,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (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 06:55:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:55:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:55:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:55:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:55:37,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:55:37,083 INFO L299 CfgBuilder]: Removed 106 assume(true) statements. [2020-12-22 06:55:37,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:37 BoogieIcfgContainer [2020-12-22 06:55:37,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:55:37,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:55:37,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:55:37,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:55:37,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:55:35" (1/3) ... [2020-12-22 06:55:37,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7024bf5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:37, skipping insertion in model container [2020-12-22 06:55:37,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:35" (2/3) ... [2020-12-22 06:55:37,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7024bf5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:37, skipping insertion in model container [2020-12-22 06:55:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:37" (3/3) ... [2020-12-22 06:55:37,095 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product35.cil.c [2020-12-22 06:55:37,102 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:55:37,108 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:55:37,129 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:55:37,158 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:55:37,159 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:55:37,159 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:55:37,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:55:37,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:55:37,159 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:55:37,160 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:55:37,160 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:55:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-12-22 06:55:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 06:55:37,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:37,187 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 06:55:37,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:37,194 INFO L82 PathProgramCache]: Analyzing trace with hash 625606487, now seen corresponding path program 1 times [2020-12-22 06:55:37,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:37,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723606573] [2020-12-22 06:55:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:37,554 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 06:55:37,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723606573] [2020-12-22 06:55:37,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:37,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:37,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169910956] [2020-12-22 06:55:37,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:55:37,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:37,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:55:37,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:37,581 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 2 states. [2020-12-22 06:55:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:37,613 INFO L93 Difference]: Finished difference Result 166 states and 251 transitions. [2020-12-22 06:55:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:55:37,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-12-22 06:55:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:37,636 INFO L225 Difference]: With dead ends: 166 [2020-12-22 06:55:37,636 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 06:55:37,642 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 06:55:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 06:55:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-22 06:55:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 06:55:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2020-12-22 06:55:37,713 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 18 [2020-12-22 06:55:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:37,714 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2020-12-22 06:55:37,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:55:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2020-12-22 06:55:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 06:55:37,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:37,717 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 06:55:37,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:55:37,719 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1306218461, now seen corresponding path program 1 times [2020-12-22 06:55:37,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:37,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261203197] [2020-12-22 06:55:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:37,839 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 06:55:37,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261203197] [2020-12-22 06:55:37,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:37,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:37,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304050285] [2020-12-22 06:55:37,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:37,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:37,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:37,843 INFO L87 Difference]: Start difference. First operand 82 states and 117 transitions. Second operand 3 states. [2020-12-22 06:55:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:37,855 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2020-12-22 06:55:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:37,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 06:55:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:37,857 INFO L225 Difference]: With dead ends: 82 [2020-12-22 06:55:37,858 INFO L226 Difference]: Without dead ends: 38 [2020-12-22 06:55:37,859 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 06:55:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-22 06:55:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-22 06:55:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 06:55:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2020-12-22 06:55:37,865 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2020-12-22 06:55:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:37,865 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2020-12-22 06:55:37,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2020-12-22 06:55:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:55:37,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:37,867 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 06:55:37,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:55:37,867 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:37,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1411810196, now seen corresponding path program 1 times [2020-12-22 06:55:37,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:37,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361252970] [2020-12-22 06:55:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:37,993 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 06:55:37,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361252970] [2020-12-22 06:55:37,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:37,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:37,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649745194] [2020-12-22 06:55:37,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:37,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:37,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:37,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:37,996 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand 3 states. [2020-12-22 06:55:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:38,016 INFO L93 Difference]: Finished difference Result 102 states and 150 transitions. [2020-12-22 06:55:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:38,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:55:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:38,019 INFO L225 Difference]: With dead ends: 102 [2020-12-22 06:55:38,019 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 06:55:38,020 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 06:55:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 06:55:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-12-22 06:55:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 06:55:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-12-22 06:55:38,041 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 24 [2020-12-22 06:55:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:38,044 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-12-22 06:55:38,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-12-22 06:55:38,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:55:38,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:38,048 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 06:55:38,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:55:38,048 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash -718050600, now seen corresponding path program 1 times [2020-12-22 06:55:38,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:38,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54871053] [2020-12-22 06:55:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:38,172 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 06:55:38,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54871053] [2020-12-22 06:55:38,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:38,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:38,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378764630] [2020-12-22 06:55:38,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:38,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:38,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:38,179 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-12-22 06:55:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:38,232 INFO L93 Difference]: Finished difference Result 171 states and 256 transitions. [2020-12-22 06:55:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:38,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 06:55:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:38,235 INFO L225 Difference]: With dead ends: 171 [2020-12-22 06:55:38,235 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 06:55:38,236 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 06:55:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 06:55:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-12-22 06:55:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 06:55:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-12-22 06:55:38,263 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 25 [2020-12-22 06:55:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:38,264 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-12-22 06:55:38,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-12-22 06:55:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:38,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:38,267 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 06:55:38,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:55:38,267 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:38,270 INFO L82 PathProgramCache]: Analyzing trace with hash -979667415, now seen corresponding path program 1 times [2020-12-22 06:55:38,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:38,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084812601] [2020-12-22 06:55:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:38,363 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 06:55:38,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084812601] [2020-12-22 06:55:38,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:38,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:55:38,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663907955] [2020-12-22 06:55:38,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:55:38,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:55:38,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:55:38,366 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 5 states. [2020-12-22 06:55:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:38,492 INFO L93 Difference]: Finished difference Result 597 states and 891 transitions. [2020-12-22 06:55:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:55:38,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 06:55:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:38,498 INFO L225 Difference]: With dead ends: 597 [2020-12-22 06:55:38,498 INFO L226 Difference]: Without dead ends: 494 [2020-12-22 06:55:38,499 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 06:55:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-12-22 06:55:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 198. [2020-12-22 06:55:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-22 06:55:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 280 transitions. [2020-12-22 06:55:38,530 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 280 transitions. Word has length 27 [2020-12-22 06:55:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:38,530 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 280 transitions. [2020-12-22 06:55:38,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:55:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 280 transitions. [2020-12-22 06:55:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 06:55:38,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:38,532 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 06:55:38,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:55:38,533 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1615036139, now seen corresponding path program 1 times [2020-12-22 06:55:38,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:38,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191013573] [2020-12-22 06:55:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:38,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:38,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:38,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:55:38,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:55:38,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:55:38,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:55:38 BoogieIcfgContainer [2020-12-22 06:55:38,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:55:38,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:55:38,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:55:38,891 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:55:38,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:37" (3/4) ... [2020-12-22 06:55:38,894 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:55:39,034 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec3_product35.cil.c-witness.graphml [2020-12-22 06:55:39,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:55:39,038 INFO L168 Benchmark]: Toolchain (without parser) took 3903.28 ms. Allocated memory was 156.2 MB in the beginning and 190.8 MB in the end (delta: 34.6 MB). Free memory was 131.1 MB in the beginning and 146.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,039 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 140.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:55:39,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.56 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 137.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 133.61 ms. Allocated memory is still 156.2 MB. Free memory was 137.4 MB in the beginning and 134.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,042 INFO L168 Benchmark]: Boogie Preprocessor took 81.75 ms. Allocated memory is still 156.2 MB. Free memory was 134.1 MB in the beginning and 132.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,042 INFO L168 Benchmark]: RCFGBuilder took 1024.40 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 117.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,043 INFO L168 Benchmark]: TraceAbstraction took 1802.73 ms. Allocated memory was 156.2 MB in the beginning and 190.8 MB in the end (delta: 34.6 MB). Free memory was 117.7 MB in the beginning and 157.5 MB in the end (delta: -39.8 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,043 INFO L168 Benchmark]: Witness Printer took 143.84 ms. Allocated memory is still 190.8 MB. Free memory was 157.5 MB in the beginning and 146.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:39,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 140.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.56 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 137.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 133.61 ms. Allocated memory is still 156.2 MB. Free memory was 137.4 MB in the beginning and 134.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.75 ms. Allocated memory is still 156.2 MB. Free memory was 134.1 MB in the beginning and 132.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1024.40 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 117.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1802.73 ms. Allocated memory was 156.2 MB in the beginning and 190.8 MB in the end (delta: 34.6 MB). Free memory was 117.7 MB in the beginning and 157.5 MB in the end (delta: -39.8 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * Witness Printer took 143.84 ms. Allocated memory is still 190.8 MB. Free memory was 157.5 MB in the beginning and 146.0 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: 558]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L326] int cleanupTimeShifts = 4; [L425] int waterLevel = 1; [L426] int methaneLevelCritical = 0; [L732] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L402] int retValue_acc ; [L403] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L545] int retValue_acc ; [L548] retValue_acc = 1 [L549] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] tmp = valid_product() [L411] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L443] COND TRUE waterLevel < 2 [L444] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND FALSE !(\read(tmp___2)) [L91] tmp___1 = __VERIFIER_nondet_int() [L93] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L278] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L285] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L130] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L137] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L293] int tmp ; [L294] int tmp___0 ; [L295] int tmp___1 ; [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L299] tmp = isMethaneLevelCritical() [L301] COND FALSE !(\read(tmp)) [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L305] tmp___0 = getWaterLevel() [L307] COND TRUE tmp___0 == 2 [L211] int retValue_acc ; [L214] retValue_acc = pumpRunning [L215] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L309] tmp___1 = isPumpRunning() [L311] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L558] 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, 86 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 363 SDtfs, 337 SDslu, 290 SDs, 0 SdLazy, 56 SolverSat, 14 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=198occurred 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, 302 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 5120 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...